From @mail.uunet.ca:jaywon.pci.on.ca!sizone!sdavis@pci Sun Aug 1 05:08:24 1993 Received: from uunet.ca by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA11925; Sun, 1 Aug 1993 05:08:24 -0400 Received: from pci by mail.uunet.ca with UUCP id <102495(1)>; Sun, 1 Aug 1993 04:59:35 -0400 Received: by pci.on.ca (/\==/\ Smail3.1.28.1 #28.1) id ; Sun, 1 Aug 93 04:11 EDT Received: by jaywon.pci.on.ca (V1.16/Amiga) id AA05oqf; Sun, 1 Aug 93 01:23:51 EST Received: by sizone.jaywon.pci.on.ca (1.65/waf) via UUCP; Sat, 31 Jul 93 13:06:39 EDT for fm-10@dg-rtp.dg.com Message-Id: Date: Sat, 31 Jul 1993 12:54:02 -0400 Organization: SIZone, Soviet Recommunization Assoc., Toronto 416-YOU-SAW-BOB From: sdavis@sizone.jaywon.pci.on.ca (Scott Davis) To: fm-10@dg-rtp.dg.com Subject: Slim Jim Experimentation.. I built myself a slim jim yesterday. It looks marvelous. I had the thing hanging from string outside my house yesterday. A couple of friends, neighbours and girlfriend all agree that it's the most aestheticly pleasing antenna they've seen yet. Actually, a friend's little brother suggested I paint it zebra-stripe. Anyhow, it seems to work about as well as my dinky dipole. I'm only running at 70mW of power, so the ancient SWR that I borrowed from a CB friend was unable to register anything.. once I build some of Mycal's larger amps, I'll be able to tune it and let you all know what kind of specs I am able to get out of it. I have some construction suggestions for anyone thinking about making one of these - simple things that could make life easier for anyone else interested in making one. I've done no work with soldering copper pipe before. I've watched it done a few times, so I didn't hesitate to whip out a propane torch and begin hacking. Getting the correct angles of "rotation?" at the 90 degree corners was a little bit of a slut. IE, the 3 inch gap was three inches, and 4 inches sideways at first. I solved that problem by lying the assembled antenna on a flat, indestructable surface (concrete floor in my basement) and letting the propane melt down the solder connections again. Because the antenna was lying flat on the surface of the floor, when it cooled, it formed a nice, even three inch gap. (Melted the paint on the floor a little - pfft.) The sidewalk in front of your house or apt. should serve the purpose of my basement floor nicely, I imagine. I wonder - about spacing. The three inch space between the two lengths of element is a little vague. three inches from the outside of the pipe, centre of the pipe, or inside side..? Ack! I just eyeballed it, and prayed for the best. I need advice on this, I think. Anyone know anything? Peace All, please respond and let me know about your modifications to this antenna and it's best operating setup! Scott. From @mail.uunet.ca:jaywon.pci.on.ca!sizone!sdavis@pci Sun Aug 1 05:00:12 1993 Received: from uunet.ca by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA11575; Sun, 1 Aug 1993 05:00:12 -0400 Received: from pci by mail.uunet.ca with UUCP id <102496(2)>; Sun, 1 Aug 1993 04:59:35 -0400 Received: by pci.on.ca (/\==/\ Smail3.1.28.1 #28.1) id ; Sun, 1 Aug 93 04:11 EDT Received: by jaywon.pci.on.ca (V1.16/Amiga) id AA05oqk; Sun, 1 Aug 93 01:23:54 EST Received: by sizone.jaywon.pci.on.ca (1.65/waf) via UUCP; Sat, 31 Jul 93 13:10:34 EDT for fm-10@dg-rtp.dg.com Message-Id: Date: Sat, 31 Jul 1993 13:07:34 -0400 Organization: SIZone, Soviet Recommunization Assoc., Toronto 416-YOU-SAW-BOB From: sdavis@sizone.jaywon.pci.on.ca (Scott Davis) To: fm-10@dg-rtp.dg.com Subject: Mr. Dunnifer's Workshops. I'm still debating the value of makign a trip to New York to see the workshops from FRB. I'm interested only in the technichal aspects of the workshop. Does anyone have any input about how useful the information is..? I've been trying to call Stephen for a couple of days now. I hope to reach him soon. Scott.. From @CMUVM.CSV.CMICH.EDU:34I2NYW@CMUVM.CSV.CMICH.EDU Mon Aug 2 14:34:37 1993 Received: from dg-webo.us.dg.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA09378; Mon, 2 Aug 1993 14:34:37 -0400 Received: from cmuvm.csv.cmich.edu by dg-webo.webo.dg.com (5.4.1/dg-webo-v1) id AA29163; Mon, 2 Aug 1993 14:33:30 -0400 Received: from CMUVM.CSV.CMICH.EDU by CMUVM.CSV.CMICH.EDU (IBM VM SMTP V2R1) with BSMTP id 0549; Mon, 02 Aug 93 14:30:09 EDT Received: from CMUVM (NJE origin 34I2NYW@CMUVM) by CMUVM.CSV.CMICH.EDU (LMail V1.1d/1.7f) with BSMTP 8287; Mon, 2 Aug 1993 14:30:09 -0400 Date: Mon, 02 Aug 93 14:29:07 EDT From: "Christopher M. Khoury" <34I2NYW@CMUVM.CSV.CMICH.EDU> Organization: Central Michigan University Subject: Steven's transmitter or FM10? To: FM-10 Mailing List Message-Id: <930802.142907.EDT.34I2NYW@CMUVM> Hi everyone... Well, i've come down to my final decision, it will either be Steven Dunifer's 5 watt transmitter or the FM-10. ANy last minute advice?? I think Dunifer's seems to be a better deal, and he also says it is a vast improvement over the FM10... in what way is it imporved?? thanks --chris --------------------------- CHRISTOPHER KHOURY 34I2NYW@CMUVM.CSV.CMICH.EDU --------------------------- From jmichael@vnet.IBM.COM Mon Aug 2 16:52:40 1993 Received: from dg-webo.us.dg.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA29803; Mon, 2 Aug 1993 16:52:40 -0400 Received: from vnet.ibm.com by dg-webo.webo.dg.com (5.4.1/dg-webo-v1) id AA27892; Mon, 2 Aug 1993 16:51:25 -0400 Message-Id: <9308022051.AA27892@dg-webo.webo.dg.com> Received: from ATLVM1 by vnet.IBM.COM (IBM VM SMTP V2R2) with BSMTP id 1540; Mon, 02 Aug 93 16:46:45 EDT Date: Mon, 2 Aug 93 16:47:51 EDT From: jmichael@vnet.IBM.COM To: fm-10@dg-rtp.dg.com Subject: Re: Mr. Dunnifer's workshops You might consider videotaping these workshops. Many people may be interested in the workshops, but unable to attend. From cdimick@sim.es.com Mon Aug 2 17:20:19 1993 Received: from ES.COM by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA03884; Mon, 2 Aug 1993 17:20:19 -0400 Received: from sim.ES.COM ([130.187.170.219]) by orca.es.com (4.1/SMI-4.1) id AA25289; Mon, 2 Aug 93 15:20:13 MDT Received: by sim.ES.COM (4.1/esunix-ver1.7/SMI-4.1/esunix) id AA01240; Mon, 2 Aug 93 15:16:18 MDT From: cdimick@sim.es.com (Clint Dimick) Message-Id: <9308022116.AA01240@sim.ES.COM> Subject: Videotaping Workshops To: fm-10@dg-rtp.dg.com Date: Mon, 2 Aug 1993 15:16:17 -0600 (MDT) X-Mailer: ELM [version 2.4 PL21] Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Length: 738 > From jmichael@vnet.IBM.COM Mon Aug 2 15:03:38 1993 > You might consider videotaping these workshops. Many people may be > interested in the workshops, but unable to attend. This sounds like an excellent idea. If the true purpose of this organiza- tion is to disseminate the purpose of "micropower broadcasting" and the ease with which is can be done, I don't see how Mr. Dunifer could refuse such an offer. Maybe a final edited version could also be sold at minimal cost to also help the donation pool. On another note, has anyone ordered any kits from him yet? It's been about two weeks, two e-mail msgs., and $5.00 with no response. Just curious to know if parts need to be ordered, checks need to clear, etc. - Clint From miller@robin Tue Aug 3 12:07:36 1993 Received: from robin.rtp.dg.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA26970; Tue, 3 Aug 1993 12:07:36 -0400 Received: by robin (5.4.2/rtp-s04) id AA14817; Tue, 3 Aug 1993 12:07:35 -0400 Date: Tue, 3 Aug 1993 12:07:35 -0400 From: miller@dg-rtp.dg.com (Mark T. Miller) Message-Id: <9308031607.AA14817@robin> To: fm-10@dg-rtp.rtp.dg.com Subject: rec.radio.broadcasting #2421 - Right to communicate panel in NYC And the follow-on posting. . . In article <1993Aug2.025933.4653@gagme.chi.il.us>, resystom@web.apc.org (Bruce Girard) writes: |> |> Topic 365 Vinny Mohr @ Gui NLG Conv. |> igc:pfranck amarc.general 6:19 pm Jul 22, 1993 |> |> From: Peter Franck |> Subject: Vinny Mohr @ Gui NLG Conv. |> |> /* Written 5:17 pm Jul 20, 1993 by pfranck@igc.apc.org in igc:nlg.interact */ |> /* ---------- "Comm on Demo Cmmncns Conv Panel" ---------- */ |> PANEL |> |> NLG COMMITTEE ON DEMOCRATIC COMMUNICATIONS |> |> Title: The Right to Communicate as a Basic Human Right in |> the 90s and beyond. |> |> The Panel will be presented at Noon on Sunday the 8th |> AMARC founding member Vinny Mohr will be a featured |> panelist at the (US) National Lawyers Guild Convention |> in New York. The Convention will be held at NYU |> Aug 5-8. This panel is at noon on Sun the 8th. |> All are invited. |> |> |> |> This Panel will focus on the emerging "Right to Communicate" |> as a human right fundamental to democracy in the world of the |> present and the future. |> |> |> BACKGROUND: |> |> For more than 30 years there has been a major movement |> throughout the world (but almost entirely blacked out by the U.S. |> press) and originating in the Non Alighted Movement, for a "New |> World Information and Communications Order." |> |> Commissioned by UNESCO, the 1980 Report of the MacBride |> Commission (chaired by the distinguished Irish statesman Sean |> MacBride) crystallized the notion of communications and cultural |> sovereignty as basic human rights of all peoples. |> |> Today the Right to Communicate is essential to the grass |> roots democratic mobilization of the world's peoples. That |> mobilization is the world's only hope against the current rush to |> the centralization of power in giant multinational corporations |> and super-states (the European Community, NAFTA, etc.). |> |> The Presentation will be in three sub-panels, with question |> time: |> |> Panel 1: Community Empowerment Through Radio: Steven |> Dunifer, micro radio practitioner assessed $20,000 fine by FCC. |> Lavinia Mohr, founder World Federation of Community Broadcasters. |> |> Panel 2: From Algiers to Dublin: The Struggle for an |> Emerging Human Right. Dr. Fernando Reyes Mata, Chilean |> delegation to the United Nations. Colleen Roach, author |> Communication and Culture in War and Peace. |> |> Panel 3: Towards a New International Legal Standard: The |> Right to Communicate. Alan Korn, author NLG brief on |> constitutional Right to Micro Radio. Michelle Schwartz Board of |> Directors of Human Rights Advocates. |> |> |> The speakers: |> |> 1. Stephen Dunifer is a member of Free Radio Berkeley |> and the Free Communications Coalition (FCC). Charged with micro |> radio broadcasting without a license Dunifer has been assessed a |> $20,000 fine by the Federal Communications Commission. He is |> being represented by members of the NLG Committee on Democratic |> Communications. Dunifer will speak on "Micro Radio, The Voice of |> the People." |> |> 2. Lavinia (Vinny) Mohr is a founder of the World |> Association of Community Radio Broadcasters (known by its French |> acronym AMARC). AMARC is an international Non-Governmental |> Organization based in Montreal composed of hundreds of member |> community radio stations of all sizes worldwide. Ms. Mohr will |> speak on Community Radio, the Right to Communicate and People's |> Movements Around the World. |> |> 3. Dr. Fernando Reyes Mata is professor of |> International Communications at the National University of Andres |> Bello Chile, and a member of the Chilean delegation to the United |> Nations. Dr. Mata played a leading role in the historic NWICO |> Movement, having been present at the founding meeting in Algiers. |> He will speak on The Right to Communicate at the End of the 20th |> Century and Beyond. |> |> 4. Professor Colleen Roach is Professor of |> Communications at Queens College, New York. A United Nations |> representative of the International Organization of Journalists. |> She will speak on the Emergence of the New Human Right Called the |> Right to Communicate the People's Struggles for Self- |> Determination. |> |> 5. Alan Korn is a 1993 graduate of Golden Gate Law |> School is the author of the Committee on Democratic |> Communications brief on the constitutional and international law |> in validity on the ban on micro radio. He will speak on The |> Constitutional Law Legal Basis for the Right to Communicate. |> |> |> 6. Michelle Schwartz holds an LLM in International Law |> from the London School of Economics. She is a member of the |> Board of Directors of Human Rights Advocates, and Senior staff |> attorney at National Heritage Institute. She has represented |> NGOs before the Human Rights Commission in Geneva and has drafted |> a human rights intervention on behalf of micro radio. Human |> Rights Advocates is an NGO actively presenting human rights |> violations to the UN subcommission on Human Rights in Geneva. |> She will speak on The Development of The Right to Communicate |> within the U.N. and NGO systems. |> |> |> @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ |> @@ Bruce Girard : Email: resystom@web.apc.org :: |> @@ 3575 blvd. St-Laurent, Suite 704 : Tel: +(514) 982-0351 :: |> @@ Montreal, Quebec CANADA H2X 2T7 : Fax: +(514) 849-7129 :: |> @@:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: |> |> |> -- Mark T. Miller miller@dg-rtp.dg.com ...uunet!xyzzy!miller From miller@robin Tue Aug 3 12:06:19 1993 Received: from robin.rtp.dg.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA26648; Tue, 3 Aug 1993 12:06:19 -0400 Received: by robin (5.4.2/rtp-s04) id AA14486; Tue, 3 Aug 1993 12:06:16 -0400 Date: Tue, 3 Aug 1993 12:06:16 -0400 From: miller@dg-rtp.dg.com (Mark T. Miller) Message-Id: <9308031606.AA14486@robin> To: fm-10@dg-rtp.rtp.dg.com Subject: rec.radio.broadcasting #2419 - Free Radio berkely, micro-radio and the FCC Fowarded for your interest. . . In article <1993Aug2.025912.4622@gagme.chi.il.us>, nyt@blyth.org (NY Transfer News) writes: |> Via NY Transfer News Collective * All the News that Doesn't Fit |> |> |> >From: stephenpd@aol.com |> Date: Sat, 31 Jul 93 02:39:07 EDT |> |> For further information call: |> |> Louis Hiken, Attorney at Law, (415) 705-6460 |> Free Radio Berkeley (510) 464-3041 |> |> |> FCC'S ACTIONS AGAINST ALLEGED MICRO POWER BROADCASTER |> CHALLENGED BY RECENTLY FILED LEGAL RESPONSE |> |> In response to the Notice of Apparent Liability, in the amount of |> $20,000, brought by the Federal Communications Commission, against |> Stephen Dunifer, a long-time activist and resident of Berkeley, |> California, for allegedly broadcasting without a license, attorney |> Louis Hiken has filed a 13-page response that refutes this action |> by the FCC on the grounds that it is "unwarranted, procedurally |> flawed, constitutionally invalid, and calls for a forfeiture |> amount that is grossly disproportionate to the alleged violations |> and which exceeds the maximum limits set by statute". |> |> Quoting further, "The Federal Communications Commission policies |> with regards to micro radio broadcasting have failed to keep pace |> with the rapid proliferation of technological advances in the |> field of communications. The FCC's current regulatory scheme |> completely prohibits micro radio broadcasters and their listeners |> from accessing the public airwaves. To enforce this absolute |> prohibition, the FCC is relying upon regulations which were |> intended solely for application to large-scale, commercial |> broadcasters, and which were promulgated long before the advent of |> technology that makes possible micro radio; indeed, even before |> the advent of FM broadcasting. The FCC's application of these |> regulations violates the First Amendment rights of individuals |> seeking to exercise those rights via methods and mediums that were |> technologically impossible when the regulations were created." |> |> The fundamental problem is that the FCC has not provided |> procedures by which micro radio broadcasters can become licensed |> or authorized. Instead, the FCC is applying severe administrative |> and criminal sanctions, intended for application to large-scale |> operators, to micro radio broadcasters with the goal of completely |> precluding all such broadcasts. |> |> As the named party by the FCC, Stephen Dunifer stated "This |> recently filed response is an extremely clear and succinct defense |> of micro power broadcasting. It is my hope that we can establish |> a clear and binding legal precedent which will protect the |> internationally recognized right of communication between |> individuals and communities. In light of the FCC's pitiful ruling |> that the Home Shopping Channel serves the public interest, it is |> obvious the FCC is more interested in protecting the status quo of |> commercial and corporate interests than actual public interests. |> As the one dissenting FCC commissioner, Evin Duggan, put it - |> 'Today, sadly. the commission puts forward a minimalist definition |> of the public interest standard, at precisely the moment we should |> be mending and refurbishing that tattered banner.' Despite the |> most recent actions of the FCC, Free Radio Berkeley will continue |> its weekly Sunday broadcasts as a community free speech project, |> from 9 PM to 12 Midnight at 88.1 on the FM band. We will not be |> silenced by federal agencies who hide behind a facade of serving |> the public interest to mask their flagrant abuse of regulatory |> power, public money and resources to defend, promote, and serve |> private corporate media interests." |> |> Peter Franck, speaking for the National Lawyers Guild Committee on |> Democratic Communications (NLGCDC), stated, "The NLGCDC has laid |> the groundwork for the defense of Mr. Dunifer and Micro Radio |> practitioners. The work of the CDC focuses on the rights of all |> people to have a world-wide system of media and communications |> based on the principle of cultural and informational |> self-determination. Its research has led it to find that the |> FCC's ban on low power community broadcasting violates both the US |> Constitution and International Human Rights Law. |> |> Full length copies of the brief may be obtained by calling one of |> the above numbers. |> |> On the weekend of August 6-8, the National Lawyers Guild will be |> holding its national convention on the campus of NYU. As part of |> that convention, on Sunday, August 8 there will be a special |> panel, sponsored by the NLG Committee on Democratic |> Communications, which will focus on the emerging "Right to |> Communicate" as a human right fundamental to democracy in the |> world of the present and the future. |> |> Stephen Dunifer, along with Lavinia Mohr, a founder of the World |> Federation of Community Broadcasters (AMARC) will speak as part of |> the first panel, of three, on "Community Empowerment Through |> Radio." |> |> Two more panels are featured as well. "From Algiers to Dublin: |> The Struggle for an Emerging Human Right" will include Dr. |> Fernando Reyes Mata, Chilean delegation to the United States, and |> Colleen Roach, author Communication and Culture in War and Peace. |> |> The third panel, "Towards a New International Legal Standard: The |> Right to Communicate," will present Alan Korn, author of NLG brief |> on Constitutional Right to Micro Radio and Michelle Schwartz, |> Board of Directors of Human Rights Advocates |> |> Stephen Dunifer, as part of his trip to New York City, will be |> leading workshops on micro power broadcasting - see following |> flyer. These workshops will be oriented to imparting hands on |> knowledge of radio broadcasting fundamentals including the |> assembly of 5 watt FM transmitters which will be offered to |> workshop participants as kits at a cost of $40 each. With an |> assembled transmitter unit and a $100-$200 worth of audio gear, |> cable and an antenna, any group or individual will be capable of |> putting their own micro power station on the air. An output power |> of 5 watts will, depending on conditions, project a 1 to 5 mile |> radius of coverage. |> |> Paper Tiger Television will be hosting these workshops at their |> offices on Saturday, August 7 from 11 am to 4 pm and Monday, |> August 9 from 7 pm to 10 pm. |> |> Paper Tiger TV is located at 339 Lafayette Street in NYC. Phone |> number is (212) 420-9045. |> |> Questions and inquiries regarding the National Lawyers Guild |> Convention may be directed to the NLG New York office. Stephen |> Dunifer may be contacted through the Paper Tiger office during his |> stay in NYC. Press packets on micro power broadcasting and copies |> of the legal response as well as the larger legal brief prepared |> by the NLG Committee on Democratic Communications will be |> available during that time. |> |> -30- |> |> |> + Join Us! Support The NY Transfer News Collective + |> + We deliver uncensored information to your mailbox! + |> + Modem:718-448-2358 Fax:718-448-3423 E-mail: nyt@blythe.org + |> -- Mark T. Miller miller@dg-rtp.dg.com ...uunet!xyzzy!miller From acsys!acsys!mycal@nntp.crl.com Thu Aug 5 20:19:35 1993 Received: from NNTP.CRL.COM by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA20040; Thu, 5 Aug 1993 20:19:35 -0400 Received: from acsys.UUCP by nntp.crl.com with UUCP id AA10339 (5.65c/IDA-1.5 for fm-10@dg-rtp.dg.com); Thu, 5 Aug 1993 16:00:44 -0700 Received: by NetAcsys.com (UUPC/extended 1.11v); Thu, 05 Aug 1993 12:16:08 PDT Date: Thu, 05 Aug 1993 12:16:06 PDT From: "Mycal" Message-Id: <2c615c78.acsys@NetAcsys.com> Organization: ACSYS, Inc. To: fm-10@dg-rtp.dg.com Subject: transistors Yea, I just got my misu transistors from dalbani. Look for a simple 500mw 1 stage amp for the FM-10 with filtering soon! mycal -- --------mycal@netacsys.com-------------------------------------------------- In the pure sciences, you are graded on how well you tell the truth. In the pure liberal studies, you are graded on how well you can lie. Everything in between is up for grabs. From kors@netcom.com Thu Aug 5 21:15:45 1993 Received: from netcom4.netcom.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA08647; Thu, 5 Aug 1993 21:15:45 -0400 Received: by netcom4.netcom.com (5.65/SMI-4.1/Netcom) id AA26062; Thu, 5 Aug 93 18:16:34 -0700 From: kors@netcom.com (Richard Kors) Message-Id: <9308060116.AA26062@netcom4.netcom.com> Subject: add To: fm-10@dg-rtp.dg.com Date: Thu, 5 Aug 93 18:16:33 PDT X-Mailer: ELM [version 2.3 PL11] Please ADD to your fm-10 mailing list. Thanks kors@netcom.com -- From acsys!acsys!mycal@nntp.crl.com Mon Aug 9 22:12:08 1993 Received: from nntp.crl.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA07728; Mon, 9 Aug 1993 22:12:08 -0400 Received: from acsys.UUCP by nntp.crl.com with UUCP id AA01118 (5.65c/IDA-1.5 for fm-10@dg-rtp.dg.com); Mon, 9 Aug 1993 19:11:53 -0700 Received: by NetAcsys.com (UUPC/extended 1.11v); Mon, 09 Aug 1993 09:38:07 PDT Date: Mon, 09 Aug 1993 09:38:01 PDT From: "Mycal" Message-Id: <2c667d70.acsys@NetAcsys.com> Organization: ACSYS, Inc. To: fm-10@dg-rtp.dg.com Subject: mycal update IMPORTANT MICROPOWER UPDATE =========================== There has been a little excitement on the ftp site this weekend. I uploaded 3 new and very exciting postscript files. They are in the ZIP format. They are : 800mw amp from my packet Powermeter/dummyload that uses a VOM And a copy of the book Radio is my bomb (in ps and text). Definatly worth a check out! People can FTP into dg-rtp.dg.com with user "anonymous" and password "". Files are in fm10\incomming Since my net access is back up to par and I am done moving I have a bunch more time and am hoping to work on finishing a bunch of micropower radio projects. Also I will be uploading some more ps files. The radio is my bomb book came from someone on the net, but I lost your address, so thanx and it was perfect for the ftp site! Please mail me again, I have some questions. ***************************************************************** If you are using the mailing list please remeber that all add/delete request go to a different address than the contributions. The addresses are : To send a message to the mailing list, send your question, reply, comment, or contribution to : fm-10@dg-rtp.dg.com To add or delete yourself from the list, send a short message with the function (add/delete/change address) along with the relevant e-mail address to: fm-10-request@dg-rtp.dg.com ******************************************************************* I have been getting alot of questions about the Radio Free Berkeley kits. No, I don't think they are a rip off. I've talked to Stephen a bunch of times and traded designs etc. I wouldn't think for a moment that he would rip anyone off. The 5watt kit is a very sound design and much more stable than the FM-10, you could even use a slightly modified ba1404 based kit for a stereo generator for it. I know he has the pcb's for the 5 watt kit, but I don't know about any of the other kits he plans on. Let me know if you have any problems with ordering on of the Radio Free Berkeley kits. ************************************************ There has been some great stuph of late on the mailing list and the alt.radio.pirate group. Keep it up! It looks like micropower radio is about to explode. I am working on a book, and I may soon send sections out for review. Also I am in the middle of designing several low power <.5watt transmitters that will be fool proof in design and provide very good harmonic suppression (greater than 40db). Liberty to all, mycal -- --------mycal@netacsys.com-------------------------------------------------- In the pure sciences, you are graded on how well you tell the truth. In the pure liberal studies, you are graded on how well you can lie. Everything in between is up for grabs. From jkearman@arrl.org Tue Aug 10 09:48:53 1993 Received: from port6.hartford.ct.pub-ip.psi.net by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA15290; Tue, 10 Aug 1993 11:00:12 -0400 Received: from jek by mgate with SMTP id AA254945 ; Tue, 10 Aug 93 09:48:37 EST Date: Tue, 10 Aug 93 14:52:07 GMT Message-Id: <11251@jek> From: jkearman@arrl.org (Jim Kearman) To: fm-10@dg-rtp.dg.com Subject: FTP I ftped to the dg-rtp.dg.com site, but couldn't find anything that looked like "fm10/incomming." I looked in several likely directories. What's up? Jim From jkearman@arrl.org Tue Aug 10 10:14:03 1993 Received: from port6.hartford.ct.pub-ip.psi.net by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA20319; Tue, 10 Aug 1993 11:33:41 -0400 Received: from jek by mgate with SMTP id AA254964 ; Tue, 10 Aug 93 10:13:20 EST Date: Tue, 10 Aug 93 15:16:31 GMT Message-Id: <11254@jek> From: jkearman@arrl.org (Jim Kearman) To: fm-10@dg-rtp.dg.com Subject: Please disregard previous posting "fm10" doesn't show up if you do a "dir" but you can "cd" to it. Jim From dbrillha@dave.mis.semi.harris.com Tue Aug 10 13:47:50 1993 Received: from dave.mis.semi.harris.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA11901; Tue, 10 Aug 1993 13:47:50 -0400 Received: by dave.mis.semi.harris.com (5.65/DEC-Ultrix/4.3) id AA28192; Tue, 10 Aug 1993 13:47:59 -0400 From: dbrillha@dave.mis.semi.harris.com (Dave Brillhart) Message-Id: <9308101747.AA28192@dave.mis.semi.harris.com> Subject: zip format & UNIX To: fm-10@dg-rtp.dg.com Date: Tue, 10 Aug 1993 13:47:59 -0400 (EDT) X-Mailer: ELM [version 2.4 PL22] Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Length: 1060 I grabbed 3 files mycal recently put in fm10/incommng (binary ftp xfer mode) and tried to "unzip" them. The two schematics produce PS files that spit out about 20 pages of raw postscript on my SPARCprinter (although the ghostscript previewer displays them okay on the screen). The "radiomybomb" does not even unzip correctly. Any ideas? It looks like the PS docs were generated on a PC - I'm running on a DECstation running Ultrix. Thanks, -- Dave 160 -rw-r--r-- 1 dbrillha 150920 Aug 8 16:37 800mw.ps 27 -rw-r--r-- 1 dbrillha 27520 Aug 10 08:35 800mw.zip 36 -rw-r--r-- 1 dbrillha 36008 Aug 8 16:46 pmeter.ps 10 -rw-r--r-- 1 dbrillha 10112 Aug 10 08:35 pmeter.zip 0 -rw-r--r-- 1 dbrillha 0 Aug 10 08:38 pirate.ps 0 -rw-r--r-- 1 dbrillha 0 Aug 10 08:38 pirate.txt 0 -rw-r--r-- 1 dbrillha 0 Aug 10 08:38 radio.ps 0 -rw-r--r-- 1 dbrillha 0 Aug 10 08:38 radio.txt 240 -rw-r--r-- 1 dbrillha 236800 Aug 10 08:37 radiomybomb.zip 0 -rw-r--r-- 1 dbrillha 0 Aug 10 08:38 readme.1st From jeffh@oakhill-csic.sps.mot.com Tue Aug 10 14:20:45 1993 Received: from spsgate.sps.mot.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA16112; Tue, 10 Aug 1993 14:20:45 -0400 Received: by spsgate.sps.mot.com (4.1/SMI-4.1 / Email 2.0 4/21/93) id AA05357; Tue, 10 Aug 93 11:20:36 MST Received: from apache.sps.mot.com by motsps (4.1/SMI-4.0/Email 1.1) id AA22021; Tue, 10 Aug 93 11:19:18 MST Received: from seneca.sps.mot.com by apache.sps.mot.com (4.1/SMI-4.1) id AA17642; Tue, 10 Aug 93 13:15:44 CDT Date: Tue, 10 Aug 93 13:15:44 CDT From: jeffh@oakhill-csic.sps.mot.com (Jeff Hunsinger) Message-Id: <9308101815.AA17642@apache.sps.mot.com> To: fm-10@dg-rtp.dg.com Subject: Re: Postscript problems You might want to load the postscript file into a text editor and make sure the first two characters are %! I noticed on the 800mw.ps file that there was a ^D before those two characters. Deleting it got rid of the problem. Jeff From cdimick@sim.es.com Tue Aug 10 15:04:07 1993 Received: from ES.COM by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA23878; Tue, 10 Aug 1993 15:04:07 -0400 Received: from sim.ES.COM ([130.187.170.219]) by orca.es.com (4.1/SMI-4.1) id AA10684; Tue, 10 Aug 93 13:04:01 MDT Received: by sim.ES.COM (4.1/esunix-ver1.7/SMI-4.1/esunix) id AA01332; Tue, 10 Aug 93 12:59:18 MDT From: cdimick@sim.es.com (Clint Dimick) Message-Id: <9308101859.AA01332@sim.ES.COM> Subject: ZIP'd files on FTP Site To: fm-10@dg-rtp.dg.com Date: Tue, 10 Aug 1993 12:59:17 -0600 (MDT) X-Mailer: ELM [version 2.4 PL21] Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Length: 771 > From dbrillha@dave.mis.semi.harris.com Tue Aug 10 12:00:27 1993 > Subject: zip format & UNIX > Date: Tue, 10 Aug 1993 13:47:59 -0400 (EDT) > > I grabbed 3 files mycal recently put in fm10/incommng (binary ftp xfer > mode) and tried to "unzip" them. The two schematics produce PS files > that spit out about 20 pages of raw postscript on my SPARCprinter > (although the ghostscript previewer displays them okay on the > screen). The "radiomybomb" does not even unzip correctly. Any ideas? > It looks like the PS docs were generated on a PC - I'm running on > a DECstation running Ultrix. Dave, If you're still having problems I can PUT the raw files back on the FTP site, if we have no objections from other people. The .ZIP file unpacked fine on my PC. - Clint From dbrillha@dave.mis.semi.harris.com Tue Aug 10 15:30:41 1993 Received: from dave.mis.semi.harris.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA03568; Tue, 10 Aug 1993 15:30:41 -0400 Received: by dave.mis.semi.harris.com (5.65/DEC-Ultrix/4.3) id AA28486; Tue, 10 Aug 1993 15:30:42 -0400 From: dbrillha@dave.mis.semi.harris.com (Dave Brillhart) Message-Id: <9308101930.AA28486@dave.mis.semi.harris.com> Subject: Re: ZIP'd files on FTP Site To: cdimick@sim.es.com (Clint Dimick) Date: Tue, 10 Aug 1993 15:30:41 -0400 (EDT) Cc: fm-10@dg-rtp.dg.com In-Reply-To: <9308101859.AA01332@sim.ES.COM> from "Clint Dimick" at Aug 10, 93 12:59:17 pm X-Mailer: ELM [version 2.4 PL22] Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Length: 586 Thanks to all who already replied. It seems there are some ^D characters in the file - specifically at the head & tail of the PS files. I have an old version of unzip, which probably caused the problem. # unzip -v UnZip: Zipfile Extract v4.01 of 12-04-90; (C) 1989 Samuel H. Smith Courtesy of: S.H.Smith and The Tool Shop BBS, (602) 279-2673. -- Dave According to Clint Dimick: > > Dave, > If you're still having problems I can PUT the raw files back on the FTP > site, if we have no objections from other people. The .ZIP file unpacked > fine on my PC. > > - Clint > From danny@iastate.edu Tue Aug 10 16:18:02 1993 Received: from aarty.ecss.iastate.edu by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA10178; Tue, 10 Aug 1993 16:18:02 -0400 Received: by iastate.edu with sendmail-5.57/4.7 id ; Tue, 10 Aug 93 15:17:53 -0500 Message-Id: <9308102017.AA04166@iastate.edu> To: fm-10@dg-rtp.dg.com Subject: New Uploaded Files Date: Tue, 10 Aug 93 15:17:49 CDT From: "Dan Staedtler" I experienced the problem of trying to print the new schematics after unziping them on a UNIX machine. The files have a carriage return/line feed combination where UNIX only wants a line feed. Also the control-D at the beginning and end of the file messed up the printer (mine just didn't print). I just edited and transferred them to a PC to print them. Also the "radiomybomb" documentation is formatted for A4 sized paper and gets cut off if printed on regular 8.5x11". Luckly, I could print them on legal size and cut them down. Dan S. danny@iastate.edu From white@sleepy.ctstateu.edu Wed Aug 11 02:00:23 1993 Received: from dg-webo.us.dg.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA25919; Wed, 11 Aug 1993 02:00:23 -0400 Received: from sleepy.ctstateu.edu by dg-webo.webo.dg.com (5.4.1/dg-webo-v1) id AA22958; Wed, 11 Aug 1993 00:43:37 -0400 Received: by sleepy.ctstateu.edu (5.57/Ultrix3.0-C) id AA14714; Wed, 11 Aug 93 00:46:08 -0400 Date: Wed, 11 Aug 93 00:46:08 -0400 From: white@sleepy.ctstateu.edu (Harry White) Message-Id: <9308110446.AA14714@sleepy.ctstateu.edu> To: fm-10@dg-rtp.dg.com Subject: FRB kit & Panaxis SG? Hi all Can the Panaxis SG Stereo Generator be used with the 5W FRB kit? Would the SG output connect directly to the audio input of the FRB? Thx Harry From acsys!acsys!mycal@nntp.crl.com Wed Aug 11 09:17:45 1993 Received: from nntp.crl.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA14582; Wed, 11 Aug 1993 09:17:45 -0400 Received: from acsys.UUCP by nntp.crl.com with UUCP id AA25680 (5.65c/IDA-1.5 for fm-10@dg-rtp.dg.com); Wed, 11 Aug 1993 06:17:28 -0700 Received: by NetAcsys.com (UUPC/extended 1.11v); Tue, 10 Aug 1993 21:35:19 PDT Date: Tue, 10 Aug 1993 21:35:18 PDT From: "Mycal" Message-Id: <2c687707.acsys@NetAcsys.com> Organization: ACSYS, Inc. To: fm-10@dg-rtp.dg.com Subject: files and stuph Yes yes yes, get rid of the ^d in the ps files if your not on ms-dos. Radio is my bomb probibly doesn't have this problem, though it was done with the new zip. version 1.1 which alot of ppl are still using won't work. I just wanted to get the files up there, and I don't have a unix or apple to test with so you guys are going to have to bear with me. I have alot more stuph to upload and not alot of time to mess with it, so someone else can fix the files and re-upload them. I hope the info is usefull, it looks like we are starting to have a pretty good archive going. mycal -- --------mycal@netacsys.com-------------------------------------------------- In the pure sciences, you are graded on how well you tell the truth. In the pure liberal studies, you are graded on how well you can lie. Everything in between is up for grabs. From mrapple@quack.kfu.com Mon Aug 16 11:40:40 1993 Received: from quack.kfu.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA09562; Mon, 16 Aug 1993 11:40:40 -0400 Received: by quack.kfu.com id AA23339 (5.65c8/IDA-1.4.4 for fm-10@dg-rtp.dg.com); Mon, 16 Aug 1993 08:40:33 -0700 Date: Mon, 16 Aug 1993 08:40:33 -0700 From: Nick Sayer Message-Id: <199308161540.AA23339@quack.kfu.com> To: fm-10@dg-rtp.dg.com Subject: Mods and enhancements I've scraped out the ftp site and think I'll build the 350 mw amp and add the 38 kHz crystal, but there are some other things I want to do and I wonder if anyone can steer me in the right direction: 1. Crystalized, PLLed, or DSSed transmit frequency selection (the stuff I FTPed seems to suggest that this isn't possible) 2. Limiters 3. A Modulation meter From BEW4568@RIGEL.TAMU.EDU Mon Aug 16 22:41:45 1993 Received: from RIGEL.TAMU.EDU by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA03750; Mon, 16 Aug 1993 22:41:45 -0400 Date: Mon, 16 Aug 1993 11:15:57 -0500 (CDT) From: "Bruce E." To: fm-10@dg-rtp.dg.com Message-Id: <930816111557.21a02c6c@RIGEL.TAMU.EDU> Subject: audio input signal conditioning Well, from my experience with the fm-10, a couple things are necessary to condition the signal before it is sent to the ba1401 chip: 1) the frequency must be limited to below 16 kHz. Any signals higher than this start mixing with the pilot and mess up the broadcast signal, adding sibilance. 2) Audio level limiting. I've had a lot of trouble running my CD player into my fm-10 because the loud peaks distort, and the low-level audio is full of noise. Anyone know of a circuit that has variable limiting? Limiting that won't make the pauses between songs sound like a river? 3) The proper preemphasis filter. This is kinda variable because I'm still not sure what the real impedances are on either side of the filter. Any ideas about these wo9uld be welcomed. Bruce From froula@red.rtsg.mot.com Tue Aug 17 10:19:02 1993 Received: from motgate.mot.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA24161; Tue, 17 Aug 1993 10:19:02 -0400 Received: from pobox.mot.com ([129.188.137.100]) by motgate.mot.com with SMTP (5.67a/IDA-1.4.4/MOT-2 for ) id AA08302; Tue, 17 Aug 1993 09:18:52 -0500 Received: from rtsg.mot.com (motcid.rtsg.mot.com) by pobox.mot.com with SMTP (5.67a/IDA-1.4.4/MOT-2.for ) id AA14717; Tue, 17 Aug 1993 09:18:51 -0500 Received: from royal13.. (royal13.rtsg.mot.com) by rtsg.mot.com (4.0/SMI-4.1) id AA16296; Tue, 17 Aug 93 09:18:49 CDT Date: Tue, 17 Aug 93 09:18:46 CDT From: froula@red.rtsg.mot.com (Don Froula) Message-Id: <9308171418@royal13> To: fm-10@dg-rtp.dg.com Subject: Free Ramsey FM-10 Upgrade I'm not sure if it is widely known yet, but Ramsey is offering a free 38Khz crystal mod kit for those who are experiencing the stereo separation problem that has been reported here recently. Apparently the R-C network used in the kit does not provide the correct phase relationship in the newer runs of the BA1404 chip. The article from which this info came is included below. I called, and they immediately offered to send me the crystal and instructions free of charge. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Ramsey has released a modification kit for the FM-10 which puts in a 38-kHz crystal in place of the original RC timing network for the 38-kHz oscillator. They say that with recent production runs of the BA1404, the RC network no longer produces the correct _phasing_ of the 38-kHz signal, even though the frequency is correct (when properly adjusted). The symptom is poor stereo separation. The kit cures it. They gave me my mod. kit free, but I don't know if that is the general policy. -- :- Michael A. Covington, Associate Research Scientist : ***** :- Artificial Intelligence Programs mcovingt@ai.uga.edu : ********* :- The University of Georgia phone 706 542-0358 : * * * :- Athens, Georgia 30602-7415 U.S.A. amateur radio N4TMI : ** *** ** <>< From acsys!acsys!mycal@nntp.crl.com Tue Aug 17 12:32:46 1993 Received: from nntp.crl.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA15361; Tue, 17 Aug 1993 12:32:46 -0400 Received: from acsys.UUCP by nntp.crl.com with UUCP id AA24055 (5.65c/IDA-1.5 for dg-rtp.dg.com!fm-10); Tue, 17 Aug 1993 09:32:23 -0700 Received: by NetAcsys.com (UUPC/extended 1.11v); Tue, 17 Aug 1993 08:49:23 PDT Date: Tue, 17 Aug 1993 08:48:53 PDT From: "Mycal" Message-Id: <2c70fe04.acsys@NetAcsys.com> Organization: ACSYS, Inc. To: "Nick Sayer" Cc: fm-10@dg-rtp.dg.com Subject: Re: Mods and enhancements On Mon, 16 Aug 1993 08:40:33 -0700, "Nick Sayer" wrote: > I've scraped out the ftp site and think I'll build the 350 mw > amp and add the 38 kHz crystal, but there are some other things > I want to do and I wonder if anyone can steer me in the right direction: > > 1. Crystalized, PLLed, or DSSed transmit frequency selection (the > stuff I FTPed seems to suggest that this isn't possible) A couple of us out here have'em (PLL's). Once I get time I'm going put the final PLL stuph togeather for distribution. Also I see no problem with xtal transmitters, there just a bit tricky to get enough deviation for stereo modulation, or you have to use frequency multiplication. > > 2. Limiters > I'm in need of a good design too! > 3. A Modulation meter > This would also be cool, how would one do this for FM? mycal -- --------mycal@netacsys.com-------------------------------------------------- The metaphor is the meaning From fylz!fyl@nwnexus.wa.com Wed Aug 18 17:06:42 1993 Received: from nwnexus.wa.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA10348; Wed, 18 Aug 1993 17:06:42 -0400 Received: by nwnexus.wa.com id AA03527 (5.65c/IDA-1.4.4 for dg-rtp.dg.com!fm-10); Wed, 18 Aug 1993 14:06:30 -0700 Received: by fylz.com (5.51/smail2.5/12-20-90) id AA15987; Wed, 18 Aug 93 13:54:37 19 Subject: Deviation Meters To: fm-10@dg-rtp.dg.com Date: Wed, 18 Aug 93 13:54:33 PDT X-Mailer: ELM [version 2.2 PL15] From: fyl@fylz.com (Phil Hughes) Message-Id: <9308181354.AA15985@fylz.com> > On Mon, 16 Aug 1993 08:40:33 -0700, "Nick Sayer" wrote: And Mycal responded: ... > > but there are some other things > > I want to do and I wonder if anyone can steer me in the right direction: > > 2. Limiters > > > I'm in need of a good design too! I have been thinking about this one. What you reall want is a compressor. > > 3. A Modulation meter > > > This would also be cool, how would one do this for FM? If you settle for checking the deviation on something where you have control over the transmitter all you need to do is measure the amplitude of the audio output of a receiver. In other words, if you put a 1KHz tone into your transmitter and adjust its amplitude the AC voltage on the speaker terminals of your receiver will be proportional to your variation of the input amplitude. The only trick is calibration. I believe there is a design for a simple deviation meter in the ARRL handbook. I was going to build it over 25 years ago (when I first got involved in FM -- as in 2 meters and up) but never did. I eventually bought a Heathkit deviation meter which is a tunable receiver and a detector. Here is the story on the Heathkit. It consists of a converter which hetrodynes the incoming signal with a local oscillator running 200KHz away (above or below -- it doesn't matter) from the incoming signal. This resulting IF is amplified, limited and converted to pulses. These pulses are then low-pass filtered. At this point you essentially have the detected signal and it is amplified to feed a speaker. This same signal is also peak detected and this drives the meter. Ok, that was quick and fairly complicated. But it is also a serious piece of test equipment with accurate calibration. It also is full of transistors and integrated circuits as it was designed about 15 years ago. So I went on a search for "Plan B". Plan B lead me to the RSGB VHF/UHF handbook. They have a deviation meter plan using a CA3089E IC that is designed to connect to a 10.7MHz IF (the common IF frequency for FM broadcast receivers). It was designed for narrow band FM but I suspect it will work on wider bandwidths as well. A comment on this manual. It is worth the $30 it costs if semi-techincal stuff is within your grasp. The version I have is from 1983 but I think it is still current. (ISBN 0 900512 63 0) I find it much better than ARRL (or any other US books) on VHF communications. Good theory coverage, lots of construction projects with enough detail to make them possible to build and, as a bonus, there is a 72MHz ham band in England so there are some "almost 3 meter" circuits. The one negative about the book is that there are more valve (that's vacuum tube in British :-) ) circuits that I think are necessary. I was hoping there would be a new edition soon that was a little more modern but the assortment of decent solid state circuits and passive things like filters still make the book a good buy. -- Phil Hughes - FYL - 8315 Lk City Wy NE - Suite 207 - Seattle, WA 98115 Phone: 206-526-2919 x74 Fax: 526-0803 E-mail: fyl@fylz.com or nwnexus!fylz!fyl From heller@ai.sri.com Wed Aug 18 21:32:39 1993 Received: from Sunset.AI.sri.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA21288; Wed, 18 Aug 1993 21:32:39 -0400 Received: from Monterey.AI.SRI.COM by Sunset.AI.SRI.COM (4.1/SMI-4.1) id AA17918 for fm-10@dg-rtp.dg.com; Wed, 18 Aug 93 18:32:41 PDT Received: by Monterey.AI.SRI.COM (4.1/SMI-4.1) id AA09788 for fm-10@dg-rtp.dg.com; Wed, 18 Aug 93 18:32:39 PDT Date: Wed, 18 Aug 93 18:32:39 PDT From: Aaron Heller Message-Id: <9308190132.AA09788@Monterey.AI.SRI.COM> To: fyl@fylz.com Cc: fm-10@dg-rtp.dg.com In-Reply-To: <9308181354.AA15985@fylz.com> Subject: Deviation Meters Date: Wed, 18 Aug 93 13:54:33 PDT From: fyl@fylz.com (Phil Hughes) > On Mon, 16 Aug 1993 08:40:33 -0700, "Nick Sayer" wrote: And Mycal respod: > > 3. A Modulation meter > > > This would also be cool, how would one do this for FM? If you settle for checking the deviation on something where you have control over the transmitter all you need to do is measure the amplitude of the audio output of a receiver. In other words, if you put a 1KHz tone into your transmitter and adjust its amplitude the AC voltage on the speaker terminals of your receiver will be proportional to your variation of the input amplitude. The only trick is calibration. Well, yes and no. You can use a standard FM receiver, but you must measure the peak level of the composite stereo signal before the stereo decoder and de-emphasis circuits. An old tuner that has a separate output for a stereo or quad decoder is perfect. The only circuit you'd need to contruct is a precision rectifier and a peak-hold circuit. Almost any IC op-amp handbook will have designs for these. To calibrate it (or any FM deviation monitor) you use a procedure which is called a Bessel null. It is based on the theory that if you frequency modulate a carrier with a single pure sine wave, at certain modulation indices (def.: the ratio of the carrier deviation to the modulating frequency) all of the power is contained in the sidebands and none in the carrier. The critcal values of the modulation indices correspond to zeros of the Bessel function of the first kind of order zero. Hence the name, Bessel null. I can describe the full procedure here if anyone is interested. Aaron Heller (heller@ai.sri.com) From ac700@medina.CWRU.Edu Wed Aug 18 22:18:13 1993 Received: from po.CWRU.Edu by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA21874; Wed, 18 Aug 1993 22:18:13 -0400 Return-Path: Received: from medina.CWRU.Edu by po.CWRU.Edu with SMTP (5.65b+ida+/CWRU-1.9) id AA06878; Wed, 18 Aug 93 22:18:06 -0400 (from ac700@medina for fm-10@dg-rtp.dg.com) Received: by medina (5.61+ida+/CWRU-1.3-client) id AA00485; Wed, 18 Aug 93 22:15:12 -0400 (from ac700 for fm-10@dg-rtp.dg.com) Message-Id: <9308190215.AA00485@medina> Date: Wed, 18 Aug 93 22:15:12 -0400 From: ac700@medina.CWRU.Edu (Aaron M. Barnes) To: fm-10@dg-rtp.dg.com Subject: Stereo Trans for sale Reply-To: ac700@medina.CWRU.Edu Hello. I have a completed DC kits SMF-II transmitter here I dont use. It has a 38kHz x-tal which provides great separation and stabilit y. It is a great little device, but dont expect to cover half the ci ty or, half a mile for that matter.Just add a little output amp and you would have a great station. It includes a large instruction/specification manual. Will take best offer. -- Aaron Barnes ac700@medina.freenet.edu Catch blacked-out Browns games on WPXI-TV 11,Pittsburgh,WICU-TV 12,Erie,or WTVG-TV 13,Toledo.All youed is a large(at least 13feet)antenna and a good sign From wdp@gagme.chi.il.us Thu Aug 19 04:05:06 1993 Received: from clout.chi.il.us by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA21179; Thu, 19 Aug 1993 04:05:06 -0400 Received: from by clout.chi.il.us with bsmtp (Smail3.1.28.1 #1) id m0oT4zM-000A7wC; Thu, 19 Aug 93 03:04 CDT Received: from gagme.chi.il.us by serveme.chi.il.us with smtp (Smail3.1.27.1 #1) id m0oT3rW-00016HC; Thu, 19 Aug 93 01:52 CDT Received: by gagme.chi.il.us (Smail3.1.26.7 #2) id m0oT3pk-0000UZB; Thu, 19 Aug 93 01:50 CDT Message-Id: From: wdp@gagme.chi.il.us (Bill Pfeiffer) Subject: Re: Deviation Meters To: heller@ai.sri.com (Aaron Heller) Date: Thu, 19 Aug 1993 01:50:48 -0500 (CDT) Cc: fm-10@dg-rtp.dg.com In-Reply-To: <9308190132.AA09788@Monterey.AI.SRI.COM> from "Aaron Heller" at Aug 18, 93 06:32:39 pm X-Mailer: ELM [version 2.4 PL21] Content-Type: text Content-Length: 8994 } Aaron Heller (heller@ai.sri.com) writes... [regarding a modulation meter circuit] } I can describe the full procedure here if anyone is interested. Actually, I wish you would. In fact I wish you (and other knowlegable folks) would go further. I read and read about these kits going on the air and how to construct bigger amps and such and I also read a lot of people planning to go on-the-air and asking the sort of elementary questions that indicate that they have no idea in hell about what they are undertaking and the consequences. Basically, I support micro-radio. I have gone to the mat with several regular posters to my group (see sig below) on the subject. Many of the posters feel that micro-radio is just a bunch of children wanting to play 'sandbox radio' and putting signals on-the-air that are splattery and way out of specs with other broadcasters. They contend that most so-called pirates could not care less about the effects of going on the air in a crowded band, and that most have no technical backgrounds and are little more than 'CB types' who are now invading the legitimate broadcast bands. I have disagreed with these posters, saying that micro-radio is a viable service, provided that certain technical (not programming) standards are met. I would like to see more emphasis placed on the use of these filters, deviation meters, limiters and other things to bring micro-radio out of the sandbox and place it on a par with higher-powered broadcasters, thus making it something to be sought after, not feared and rejected. However, I see precious little said about keeping a clean, well modulated signal, and more than enough said about **HIGHER POWER**. When I do see mention made of clean signals, it is discussed in the context of 'not getting caught' instead of a pride in operating a decent station. Ham radio entusiasts have long known that it is not how much power you have, it is what you do with that power. In fact many hams deliberately use flea-powered rigs to see how much they can get out of them using creative antennas. This is the problem that plagued CB and turned it into a virtual wasteland. Everyone wanted MORE DAMNED POWER and screw everyone else. I would HATE to see the same immature, ego-driven mess proliferate on the broadcast bands (shit, there is already enough of a mess from all of the big guys :->). What I would like to see is people like you, Aaron, and Mycal and others with a great technical ability, create a 'total package' micro-radio kit ensamble with a deviation and modulation meter, output meters and such, as well as a compression circuit and whatever is needed to create a nice sounding micro-radio signal without interfering with other broadcasters. Then I would like to see someone step out in front of the pack and explain that if micro-radio is ever to get respect, ever to become legal, ever to become more than some childish dream of playing kiddie-pirate-sandbox-ego-radio, then those involved must self-regulate and earn that respect. Of course there will always be the 'angry-young-(wo)men' who LIKE the outlaw image, and the illusion of 'living on the edge' with pirate radio and that's fine. But unfortunately, those are the fools who are giving micro-radio a bad name and incuring the wrath, not only of the FCC but of other broadcasters who *could* be allies in the struggle, but who see micro-radio practitioners as crybabies who dont give a shit about anyone but themselves and their own ego gratification. There are many very sincere people who are drawn to micro-radio. Many creative people find expression through this exciting medium. I wholeheartedly support them and wish them success. Sad that they are running a serious risk of legal trouble which is way out of proportion to what they are trying to do. So what is needed is direction. Some leadership, some reality checks. What is needed is to create a micro-radio movement that is not so much 'pirate-driven' and more 'people-driven'. I submit that we stop using the term 'pirate radio' altogether and adopt 'micro-radio' or 'micro-braodcasting'. These terms are already in use and conjure up a much more positive image than pirate-radio does. OK, Call me Sentimental I envision a legal, low-powered (1 to 5 watt) micro-radio class of license that could be obtained at no (or very low) cost, provided that some minimal technical understandings were demonstrated. I then envision *real* broadcast equipment made available at a reasonable cost which might include everything from stand-alone transmitters (with proper metering and tuning features) to entire ensembles including mixers, cd/turntable/cassette decks integrated. I see small networks of these stations banding together to offer regional coverage, alternative news and music sources, community announcements, whatever. I envision micro-radio as the next big frontier in broadcasting, offering more people opportunities to become aquainted with the *reality* of operating a station. Gaining experince, honing their skills, expressing their creativity, and best-of-all **NOT** breaking any laws doing so. Provided they stay within the bounds of the license agreement (just like commercial stations must do) these stations would be free from "busts" and could advertize (and carry advertizing if they chose to). Would that not be WAY COOL? But it will never happen as long as micro-radio is seen by the rest of the broadcasting community as an excersise in splatterbox annoyance and childish ego games. We gotta re-think our approach. Perhaps a little less "in-your-face" and a little more "Use-Your-Head". Whenever someone comes 'in-someones-face' the first reaction of that person is to say "get the FU*K out of my face". Your message is lost because you have the other person on the defensive. He is not hearing you, because your approach is hostile. Many pirates fall into that catagory. Radio-Free-Berkely and others are fighting the battle for micro-radio now. They are putting their asses on the line and spending BIG BUX to pave the way for you and I to engage in what might become the 'next big adventure in broadcasting'. The FCC is covering the ass of BIG BROADCAST BUSINESS, who fears micro-radio as an intrusion into their monopoly. If we, the people, are to overcome this fear and loathing, we gotta have our act totally together. This means CLEAN, well modulated signals. Adhereing to the same technical standards as our higher-power brothers , and conducting ourselves as professonals, not idiots. This also means not stepping on other services, making damned sure that we have a clean channel before we go on the air , and that we have at least one channel seperation from the nearest signal. It means understanding the technical realities of what we plan to do. And it will mean cooperating with others on the band. I submit that if you cannot build and adjust an FM-10 or FRB kit on your own, and understand what you are doing, you should probably not be doing it. I am sure I'll get flamed for this statement by those sincere folks who just have had trouble geting the kit up-and-running, but there is so much more at stake here than that. You carry a big responsibility when you decide to operate a radio station with more than a block range. I do support the sharing of information among micro-radio enthusiasts, but I would suggest that that sharing be in the form of actual 'teaching' rather than just problem solving. In other words instead of saying "..solder c4 to ground.." tell the questioner WHY you solder c4 to ground. After all, one of the big potential values of micro-radio is to learn. Anyway, I've rambled enough. I hope what I have said has fallen on receptive ears, because without some foresight into the future, micro-radio will become nothing more than a flash-in-the-pan for pseudo-rebels and will continue to be crushed by the big hammer of the FCC whenever it is discovered. However, if we can get it together and re-think our strategy, who knows what might happen... I welcome anyone who wants to, to write and start a dialogue, either here on the list, or in email. Keep the air alive! Bill -- ____________________________________________________________________________ William Pfeiffer - Moderator | Radio is a sad salvation, | rec.radio.broadcasting - Internet Radio Journal | Radio is cleanin' up the | Article Submission - rrb@airwaves.chi.il.us | nation. | Subscription Desk - journal@airwaves.chi.il.us | 'That's the biz - baby!' | ----------------------------------------------------------------------------- From @mail.uunet.ca:jaywon.pci.on.ca!sizone!sdavis@pci Thu Aug 19 13:46:04 1993 Received: from uunet.ca by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA23877; Thu, 19 Aug 1993 13:46:04 -0400 Received: from pci by mail.uunet.ca with UUCP id <100905(3)>; Thu, 19 Aug 1993 13:20:59 -0400 Received: by pci.on.ca (/\==/\ Smail3.1.28.1 #28.1) id ; Thu, 19 Aug 93 13:03 EDT Received: by jaywon.pci.on.ca (V1.16/Amiga) id AA06hoy; Thu, 19 Aug 93 12:48:10 EST Received: by sizone.jaywon.pci.on.ca (1.65/waf) via UUCP; Thu, 19 Aug 93 11:42:57 EDT for fm-10@dg-rtp.dg.com Message-Id: <1BDJ9B1w165w@sizone.jaywon.pci.on.ca> Date: Thu, 19 Aug 1993 11:39:12 -0400 Organization: SIZone, Soviet Recommunization Assoc., Toronto 416-YOU-SAW-BOB From: sdavis@sizone.jaywon.pci.on.ca (Scott Davis) To: fm-10@dg-rtp.dg.com Subject: FM-10 Crystal Mod's I just got off the phone with Ramsey -- they're mailing me some mod kit for my FM-10. I suspect it'll be the crystal mod that was mentioned by someone else. Finally, my nightmares about stereo seperation are over. I was really peeved about the FM-10 kit in general, but if this mod fixes the seperation problem, and allows me to give the little beastie enough input for some kind of realistic sound output, I might be happy.. I had scrapped the kit to the junk heap for a couple of weeks, but I've renewed my interest. Placed an order from mouser today - which I hope will arrive before the middle of next week so's I can get Mycal's 800mW amp up, my filter and begin learning how to tune the sucker more precisely. Peace All, and thanks for the help! Scott. From stlucas@gdwest.gd.com Thu Aug 19 17:06:00 1993 Received: from gdwest.gd.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA18666; Thu, 19 Aug 1993 17:06:00 -0400 Received: by gdwest.gd.com (4.1/SMI-4.1) id AA17747; Thu, 19 Aug 93 14:03:34 PDT From: stlucas@gdwest.gd.com (Joseph St. Lucas) Message-Id: <9308192103.AA17747@gdwest.gd.com> Subject: mrf901s To: fm-10@dg-rtp.dg.com Date: Thu, 19 Aug 93 14:03:32 PDT X-Mailer: ELM [version 2.3 PL11] I thought I'd try to build the 350mw amp for my fm10, and ordered the two mrf901s from DC Electronics, along with a bunch of other stuff. Of course, the only things that were backordered were the two transistors I needed, and b.o.'ed until NOVEMBER??? Is there somewhere else I can get these things w/o a huge post/handling charge? Is there such a demand that they can be backordered for four months? Darn it all. Joe St.Lucas stlucas@gdwest.gd.com Standard Disclaimers Apply General Dynamics Space Systems, San Diego My blood runs Husker red. From zben@ni.umd.edu Fri Aug 20 13:54:57 1993 Received: from ni.umd.edu by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA07428; Fri, 20 Aug 1993 13:54:57 -0400 Received: from zben-mac-ii.umd.edu by ni.umd.edu with SMTP id AA24872 (5.65c/IDA-1.4.4 for ); Fri, 20 Aug 1993 13:51:04 -0400 Date: Fri, 20 August 1993 13:51:03 -0500 From: Charles B Cranston To: stlucas@gdwest.gd.com (Joseph St. Lucas) Subject: Re: mrf901s Cc: fm-10@dg-rtp.dg.com Message-Id: In-Reply-To: Your message <9308192103.AA17747@gdwest.gd.com> of Thu, 19 Aug 93 14:03:32 PDT Content-Type: TEXT/plain; charset=US-ASCII The MCM catalog lists mrf901s at $3.81 for one to four and $3.28 for five to nine. I don't know if they have them in stock, their number is 1-800-543-4330 and they have all KINDS of neat goodies. Shipping is "chart rate" plus an additional $2.25 shipping and handling, but they do have a $20.00 minimum order (not counting shipping and handling). Digi-Key doesn't list it at all. I suspect if Newark carries them it will be about the same as MCM or worse, I'm pretty sure they have a minumum $20.00 order policy also. How much is "huge" for a p/h charge? When you send payment with the order DigiKey eats the handling. I have to check my records to find out what they are charging me for shipping. After looking at the paperwork of my last three DigiKey orders it seems like for credit card purchases they add it to the amount charged so it will appear as the differance between my order paperwork and the actual credit card charge. Good thing I type my credit card details into a split Quicken transaction, so I still have this info broken out... From froula@red.rtsg.mot.com Fri Aug 20 14:45:00 1993 Received: from motgate.mot.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA15266; Fri, 20 Aug 1993 14:45:00 -0400 Received: from pobox.mot.com ([129.188.137.100]) by motgate.mot.com with SMTP (5.67a/IDA-1.4.4/MOT-2 for ) id AA18405; Fri, 20 Aug 1993 13:44:55 -0500 Received: from rtsg.mot.com (motcid.rtsg.mot.com) by pobox.mot.com with SMTP (5.67a/IDA-1.4.4/MOT-2.for ) id AA02976; Fri, 20 Aug 1993 13:44:54 -0500 Received: from royal13.. (royal13.rtsg.mot.com) by rtsg.mot.com (4.0/SMI-4.1) id AA00500; Fri, 20 Aug 93 13:44:51 CDT Date: Fri, 20 Aug 93 13:44:44 CDT From: froula@red.rtsg.mot.com (Don Froula) Message-Id: <9308201844@royal13> To: fm-10@dg-rtp.dg.com Subject: Ramsey Crystal Mod Kit for FM-10 I received my FM-10 modification kit from Ramsey yesterday. It consisted of a VERY small crystal in a tubular package (similar to a watch or clock crystal), 2 10pf disc capacitors and 2 resistors. The mod consisted of removing the variable and fixed pilot frequency caps, replacing these with the crystal, cutting a trace, bridging the trace with on 10pf cap, connecting the second cap from pin 5 to ground (RF bypassing?), and replacing two resistors. I also took the opportunity to replace the two pre-emphasis resistors to the 75K values for the US standard. Everything worked great the first time. The stereo pilot frequency is dead-on. One warning is in order. Be very carefully not to break the leads of the crystal while bending them to fit the PC board holes. They are very delicate! Also, the change in pre-emphasis makes the unit sound much better, especially into the bass end. Not bad for a free upgrade! From kendelm@GAS.uug.Arizona.EDU Fri Aug 20 19:30:31 1993 Received: from argon.GAS.UUG.Arizona.EDU by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA28970; Fri, 20 Aug 1993 19:30:31 -0400 Received: by argon.GAS.uug.Arizona.EDU (4.1/Argon-MX-1.4) id AA13098; Fri, 20 Aug 93 16:30:25 MST Date: Fri, 20 Aug 93 16:30:25 MST From: kendelm@GAS.uug.Arizona.EDU (kendel m mccarley) Message-Id: <9308202330.AA13098@GAS.uug.Arizona.EDU> To: fm-10@dg-rtp.dg.com Subject: phillips databook stuff I finally got the Phillips RF Power semi-conductor databook that I'd ordered almost a month ago. It has oodles of "test circuits" for their various products for the FM broadcast band (including the 200W design I told you about, Clint). I think this stuff comes out of their Dutch factory. Anyhow, the databook is a how-to for fm amps and I got mine free just by calling and asking. From acsys!acsys!mycal@nntp.crl.com Fri Aug 20 21:17:36 1993 Received: from nntp.crl.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA09758; Fri, 20 Aug 1993 21:17:36 -0400 Received: from acsys.UUCP by nntp.crl.com with UUCP id AA05348 (5.65c/IDA-1.5 for dg-rtp.dg.com!fm-10); Fri, 20 Aug 1993 18:13:16 -0700 Received: by NetAcsys.com (UUPC/extended 1.11v); Fri, 20 Aug 1993 12:11:31 PDT Date: Fri, 20 Aug 1993 12:11:28 PDT From: "Mycal" Message-Id: <2c7521e5.acsys@NetAcsys.com> Organization: ACSYS, Inc. To: fm-10@dg-rtp.dg.com Subject: Micro Power Radio Contest Also posted in alt.radio.pirate I am holding a contest for ideas on a good logo to represent Micro Power Radio for my book. The prize is a free book of course, and a mention (if you want) of where the idea came from. Right now my idea is to use the Statue of Liberty radiating radio waves. We could have a net vote, but I'd reserve the right to use the one I wanted. I'd probibly have to give two books away then :) mycal ps. I know the statue is an american thing but what it represents is a liberty thing. --------mycal@netacsys.com-------------------------------------------------- Newmerica is here and will operate on two basic fundimentals : 1) Make every thing illegal 2) Enforce as needed Any Questions? -- --------mycal@netacsys.com-------------------------------------------------- Newmerica is here and will operate on two basic fundimentals : 1) Make every thing illegal 2) Enforce as needed Any Questions? From acsys!acsys!mycal@nntp.crl.com Sat Aug 21 09:17:45 1993 Received: from nntp.crl.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA11568; Sat, 21 Aug 1993 09:17:45 -0400 Received: from acsys.UUCP by nntp.crl.com with UUCP id AA12506 (5.65c/IDA-1.5 for dg-rtp.dg.com!fm-10); Sat, 21 Aug 1993 06:13:14 -0700 Received: by NetAcsys.com (UUPC/extended 1.11v); Fri, 20 Aug 1993 21:43:23 PDT Date: Fri, 20 Aug 1993 21:43:05 PDT From: "Mycal" Message-Id: <2c75a7ed.acsys@NetAcsys.com> Organization: ACSYS, Inc. To: "Charles B Cranston" Cc: fm-10@dg-rtp.dg.com Subject: Re: mrf901s On Fri, 20 August 1993 13:51:03 -0500, "Charles B Cranston" wrote: > The MCM catalog lists mrf901s at $3.81 for one to four and > $3.28 for five to nine. I don't know if they have them in > stock, their number is 1-800-543-4330 and they have all > KINDS of neat goodies. Shipping is "chart rate" plus an > additional $2.25 shipping and handling, but they do have > a $20.00 minimum order (not counting shipping and handling). you shouldn't have to pay more than $1 for each, check rfparts or dalbani. HSC sell mps901's for $.20, different case same transistor mycal -- --------mycal@netacsys.com-------------------------------------------------- Newmerica is here and will operate on two basic fundimentals : 1) Make every thing illegal 2) Enforce as needed Any Questions? From white@sleepy.ctstateu.edu Sat Aug 21 11:13:58 1993 Received: from sleepy.ctstateu.edu by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA18867; Sat, 21 Aug 1993 11:13:58 -0400 Received: by sleepy.ctstateu.edu (5.57/Ultrix3.0-C) id AA17372; Sat, 21 Aug 93 11:17:43 -0400 Date: Sat, 21 Aug 93 11:17:43 -0400 From: white@sleepy.ctstateu.edu (Harry White) Message-Id: <9308211517.AA17372@sleepy.ctstateu.edu> To: fm-10@dg-rtp.dg.com, kendelm@gas.uug.arizona.edu Subject: Re: phillips databook stuff Kendel Can you post the Phillips address/phone number? -harry From zben@ni.umd.edu Sat Aug 21 15:47:59 1993 Received: from ni.umd.edu by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA10667; Sat, 21 Aug 1993 15:47:59 -0400 Received: from zben-mac-ii.umd.edu by ni.umd.edu with SMTP id AA07973 (5.65c/IDA-1.4.4 for ); Sat, 21 Aug 1993 15:47:50 -0400 Date: Sat, 21 August 1993 15:47:49 -0500 From: Charles B Cranston To: "Mycal" Subject: Re: NewMerica (was Micro Power Radio Contest) Cc: fm-10@dg-rtp.dg.com Message-Id: In-Reply-To: Your message <2c7521e5.acsys@NetAcsys.com> of Fri, 20 Aug 1993 12:11:28 PDT Content-Type: TEXT/plain; charset=US-ASCII > Newmerica is here and will operate on two basic fundimentals : > 1) Make every thing illegal > 2) Enforce as needed In the same way that the modern American corporate culture of "plausable deniability" and posterior covering generates the environment of "it is easier to get forgiveness than permission", the corporate culture of power and control generates this environment where people actually have no inherent rights ("make everything illegal") so getting *ANYTHING* done requires the intervention of one of the wielders of power and control ("enforce as needed") and thus becoming co-opted by them. This just goes to prove just how innovative the American founding fathers were to postulate "inherent rights", and the degree to which we have frittered away those rights in this century. Not to mention FDR giving us all numbers and making us register with a federal bureaucracy... From white@sleepy.ctstateu.edu Sat Aug 21 17:41:13 1993 Received: from sleepy.ctstateu.edu by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA20591; Sat, 21 Aug 1993 17:41:13 -0400 Received: by sleepy.ctstateu.edu (5.57/Ultrix3.0-C) id AA17511; Sat, 21 Aug 93 17:44:58 -0400 Date: Sat, 21 Aug 93 17:44:58 -0400 From: white@sleepy.ctstateu.edu (Harry White) Message-Id: <9308212144.AA17511@sleepy.ctstateu.edu> To: fm-10@dg-rtp.dg.com Subject: RS has a new FreqCounter Hey FM-10ers... I just saw the new RadioShack catalog today (they now want $3 for it) and they have a new frequency counter (1MHz---> well past the FM broadcast band). The price was $100. My local store did not have it yet. FYI. Peace Harry From @mail.uunet.ca:jaywon.pci.on.ca!sizone!sdavis@pci Sun Aug 22 07:06:22 1993 Received: from uunet.ca by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA02879; Sun, 22 Aug 1993 07:06:22 -0400 Received: from pci by mail.uunet.ca with UUCP id <101294(1)>; Sun, 22 Aug 1993 06:50:58 -0400 Received: by pci.on.ca (/\==/\ Smail3.1.28.1 #28.1) id ; Sun, 22 Aug 93 02:41 EDT Received: by jaywon.pci.on.ca (V1.16/Amiga) id AA06ktv; Sat, 21 Aug 93 19:47:54 EST Received: by sizone.jaywon.pci.on.ca (1.65/waf) via UUCP; Sat, 21 Aug 93 19:27:42 EDT for fm-10@dg-rtp.dg.com Message-Id: Date: Sat, 21 Aug 1993 19:23:25 -0400 In-Reply-To: <2c7521e5.acsys@NetAcsys.com> Organization: SIZone, Soviet Recommunization Assoc., Toronto 416-YOU-SAW-BOB From: sdavis@sizone.jaywon.pci.on.ca (Scott Davis) To: "Mycal" Cc: fm-10@dg-rtp.dg.com Subject: Re: Micro Power Radio Contest > Right now my idea is to use the Statue of Liberty radiating radio waves. > > We could have a net vote, but I'd reserve the right to use the one I wanted. > I'd probibly have to give two books away then :) My humble (Canadian) opinion is that the Statue of Liberty dosen't really represent Liberty at all - it is a silly symbol that's been corrupted. There's little liberty in amerikkka at all, as far as I can see - but that's not what this message is about. Just keep the american symbols and imagery outta the book, is what I'd like to say. Maybe a stylised antenna or some such other dorky symbol could be used..? Scott. From white@sleepy.ctstateu.edu Sun Aug 22 09:26:29 1993 Received: from sleepy.ctstateu.edu by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA11349; Sun, 22 Aug 1993 09:26:29 -0400 Received: by sleepy.ctstateu.edu (5.57/Ultrix3.0-C) id AA17822; Sun, 22 Aug 93 09:30:13 -0400 Date: Sun, 22 Aug 93 09:30:13 -0400 From: white@sleepy.ctstateu.edu (Harry White) Message-Id: <9308221330.AA17822@sleepy.ctstateu.edu> To: fm-10@dg-rtp.dg.com Subject: Panaxis 5W Plans I have the plans for a "Quicky Circuit - 5 Watt FM Transmitter" that appears to be from Panaxis; it is closely related to the FRB design. I'm considering building it, and would appreciate comments from anyone who has seen the plans or built this device. Thanks Harry From @CMUVM.CSV.CMICH.EDU:34I2NYW@CMUVM.CSV.CMICH.EDU Mon Aug 23 11:54:46 1993 Received: from dg-webo.us.dg.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA01556; Mon, 23 Aug 1993 11:54:46 -0400 Received: from cmuvm.csv.cmich.edu by dg-webo.webo.dg.com (5.4.1/dg-webo-v1) id AA26184; Mon, 23 Aug 1993 11:53:09 -0400 Received: from CMUVM.CSV.CMICH.EDU by CMUVM.CSV.CMICH.EDU (IBM VM SMTP V2R1) with BSMTP id 4055; Mon, 23 Aug 93 11:50:46 EDT Received: from CMUVM (NJE origin 34I2NYW@CMUVM) by CMUVM.CSV.CMICH.EDU (LMail V1.1d/1.7f) with BSMTP 9478; Mon, 23 Aug 1993 11:34:15 -0400 Date: Mon, 23 Aug 93 11:33:24 EDT From: "Christopher M. Khoury" <34I2NYW@CMUVM.CSV.CMICH.EDU> Organization: Central Michigan University Subject: Dunifer's Stereo 5 watt out yet? To: FM-10 Mailing List Message-Id: <930823.113324.EDT.34I2NYW@CMUVM> Hi... Does anyone know if Steve Dunifer's 5 watt STEREO kit is out yet?? I understand his origonal 5 watt kit is MONO... Thanks --chris oh, and how much will it cost? --------------------------- CHRISTOPHER KHOURY 34I2NYW@CMUVM.CSV.CMICH.EDU --------------------------- From clout!balr!tellab5!liltyke!simon!steve@cs.uchicago.edu Mon Aug 23 11:42:47 1993 Received: from relay1.UU.NET by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA29728; Mon, 23 Aug 1993 11:42:47 -0400 Received: from cs.uchicago.edu (via gargoyle.uchicago.edu) by relay1.UU.NET with SMTP (5.61/UUNET-internet-primary) id AA19719; Mon, 23 Aug 93 11:42:28 -0400 Received: by cs.uchicago.edu from clout.UUCP (4.1/2.0) id AA21753; Mon, 23 Aug 93 10:42:20 CDT Received: from balr by clout.chi.il.us with uucp (Smail3.1.28.1 #1) id m0oTnyq-000AA6C; Sat, 21 Aug 93 03:07 CDT Received: by balr.balr.com (/\==/\ Smail3.1.21.1 #21.4) id ; Sat, 21 Aug 93 03:00 CDT Received: from liltyke by tellab5.tellabs.com with uucp (Smail3.1.28.1 #5) id m0oTmid-000fOMC; Sat, 21 Aug 93 01:46 CDT Received: from simon by liltyke.chi.il.us with uucp (Smail3.1.28.1 #1) id m0oToxV-0000nbC; Sat, 21 Aug 93 04:10 CDT Received: by simon.chi.il.us (/\==/\ Smail3.1.25.1 #25.10) id ; Sat, 21 Aug 93 00:57 CDT Message-Id: Date: Sat, 21 Aug 93 00:57 CDT From: steve@simon.chi.il.us (Steven E. Piette) To: fm-10@dg-rtp.dg.com Subject: Re: FM-10 Crystal Mod's Well it seems that the problem with the mailing list is fixed and as an added benefit Ramsey is fixing the seperation problem with the FM-10 kit. I don't quite see how just the crystal is going to do it though. Regardless this is great. I've spent untold hours digging around various stores both here and in the Bay Area looking for a38Khz crystals since it didn't look like the Digikey Epson crystal would work and now maybe I can get one for free. I did manage to pound some seperation out ot the FM-10 by reworking the network to Rohm's specs but it seems the right channel is still stronger and it seems that the modulation level is less than before. Here's what I tried to post two weeks ago. > Message-Id: > Date: Tue, 10 Aug 93 23:24 CDT > From: steve@simon.chi.il.us (Steven E. Piette) > To: fm-10@dg-rtp.dg.com > Subject: Re: New Uploaded Files (and some questions) > > > In the past week or so I received from Rohm data sheets on the BA1404. > > I had downloaded the ba1404.zip file earler but really couldn't read > the text or examples very well so I rescanned the sheets I received at 150dpi > and added the errata sheet they sent. I uploaded the new scans as tiff > files hoping people could use them. If tiff is a problem I can convert to > various formats. If people are interested I can also scan the application > notes, there's about 9 pages. > > I've been playing with the stereo seperation problems with the FM10 kit > and noticed that Ramsey's design is significantly different than the circuit > that Rohm suggests. Has anyone tried using their circuit? I changed R7, R11, > R12 to 50ohm pot, 150kohm, and 2.7kohm and thought things were working better > but it seemed that the audio levels were reduced. I switched back and then > noticed that the stock circuit has the network bypassed to Vcc where the > Rohm circuit is bypassed to ground. Will this make much of a difference in the > result? Rohm notes that if you change the values in there network that you > must make sure not to change the phase relationships of the signals. > > I don't have a clue how to calculate phase delays yet. > > I also noted in the errata sheet that they give typical signal levels for pins > 13 and 14 as 0.6v. When I checked them in the stock setup they were about 1.7v > referenced to gnd. Could this difference have been because I just measured a > DC bias and not the AC p-p levels? > > Has anyone seen the FRB 1/2 - 1 watt Stereo Broadcast Transmitter kit? > > Thanks, > Steve Right now I figure I can change this section one more time before I have to etch an new circuit board and if I do that I'm going to do a new layout that will include a few new features. I really like to get it right. Steve From white@sleepy.ctstateu.edu Tue Aug 24 10:08:36 1993 Received: from sleepy.ctstateu.edu by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA28882; Tue, 24 Aug 1993 10:08:36 -0400 Received: by sleepy.ctstateu.edu (5.57/Ultrix3.0-C) id AA19320; Tue, 24 Aug 93 10:12:11 -0400 Date: Tue, 24 Aug 93 10:12:11 -0400 From: white@sleepy.ctstateu.edu (Harry White) Message-Id: <9308241412.AA19320@sleepy.ctstateu.edu> To: 34I2NYW@cmuvm.csv.cmich.edu, fm-10@dg-rtp.dg.com Subject: Re: Dunifer's Stereo 5 watt out yet? From what I have heard, the FRB Stereo kit will be 1/2 to 1 W, and will cost $35. I don't think that it's ready yet. Peace Harry From WHITE@CCSUA.CTSTATEU.EDU Tue Aug 24 12:54:23 1993 Received: from ccsua.ctstateu.edu by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA27076; Tue, 24 Aug 1993 12:54:23 -0400 Date: Tue, 24 Aug 1993 11:06:55 -0400 (EDT) From: "Government with a body count." To: fm-10@dg-rtp.dg.com Cc: WHITE@CCSUA.CTSTATEU.EDU Message-Id: <930824110655.27800653@CCSUA.CTSTATEU.EDU> Subject: Transistor Testing suggestions (fwd) From: SMTP%"mellob@rpi.edu" 23-AUG-1993 13:45:42.28 To: WHITE CC: Subj: transistor testing From: Brett A. Mellor Date: Mon, 23 Aug 1993 13:46:07 -0400 Message-Id: <9308231746.AA38473@localhost> To: white@ccsua.ctstateu.edu Subject: transistor testing This is the absolute easiest way I know of for a non-EE to test a transistor. Basically because it is NOT required that remove it from the circuit. Break out your favorite ohmmeter. Measure the resistance across the base and to either the collector -or- emitter, don't matter. Then, REVERSE the probes but test the SAME two pins. Zero, one way or the other, transistor is shot Same both ways, transistor is shot Infinite resistance, (an open) transistor is shot Two _different_ real values, maybe a couple hundred ohms one way and a couple kilohms the opposite way (depending on the transitor) and it is definitely funtioning. No transitor checker, no needing to take it out of the circuit. It IS good practice to check BOTH base to emitter AND bae to collector JUST IN CASE! Although if a transitor is destroyed through thermal runaway, both siders usually break down. If for some strange reason, you want the theory behind how this works, I'd be mroe than happy. Mail me. -Brett Mellor -- mellob@rpi.edu Rensselaer Polytechnic Institute Troy, New York (an Electrical Engineering student) From WHITE@CCSUA.CTSTATEU.EDU Tue Aug 24 10:43:54 1993 Received: from dg-webo.us.dg.com by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA04797; Tue, 24 Aug 1993 10:43:54 -0400 Received: from ccsua.ctstateu.edu by dg-webo.webo.dg.com (5.4.1/dg-webo-v1) id AA03025; Tue, 24 Aug 1993 10:42:56 -0400 Date: Tue, 24 Aug 1993 9:30:23 -0400 (EDT) From: "Government with a body count." To: fm-10@dg-rtp.dg.com Cc: mycal@NetAcSys.com, WHITE@CCSUA.CTSTATEU.EDU Message-Id: <930824093023.27800653@CCSUA.CTSTATEU.EDU> Subject: 2SC1971 Pinout needed stat! Hi FM10-phans, Can someone VERIFY the following pinout for the 2SC1971 power transistor of the FRB kit? Using a 1984 RS Semiconductor Guide, the TO220 pinout is: +--+--+ ---- 3 EMITTER |o | | ---- 2 COLLECTOR +--+--+ ---- 1 BASE This is the front view, with the elevated plastic body facing the viewer. If this is really the pinout, there is a problem on the PCB. We were instructed to mount the 2SC1971 from the bottom of the PCB, but the center pin currently goes to ground. Hmmmm. HELP! Could this be why I'm only getting 146mW out of a 5W design? I checked the condition of the transistor using a method mailed to me by Brett Mellor (I'll forward that post to FM-10 shortly) and the transistor appears to be OK. Any help appreciated. Regards Harry white@csusys.ctstateu.edu From WHITE@CCSUA.CTSTATEU.EDU Tue Aug 24 13:21:13 1993 Received: from ccsua.ctstateu.edu by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA02739; Tue, 24 Aug 1993 13:21:13 -0400 Date: Tue, 24 Aug 1993 9:44:23 -0400 (EDT) From: "Government with a body count." To: fm-10@dg-rtp.dg.com Cc: WHITE@CCSUA.CTSTATEU.EDU Message-Id: <930824094423.27800653@CCSUA.CTSTATEU.EDU> Subject: FM-10 70mW amp . . . for FRB kit? Can the 70mW FM-10 amp be used with the FRB kit (when the FRB kit is putting out 140mW)? The first problem I see is that the FM-10 kit appears to have a fixed value capacitor at the RF output, whilst the FRB kit employs a 16-100pF vari-cap at that position. Thanks Harry From WHITE@CCSUA.CTSTATEU.EDU Tue Aug 24 16:44:52 1993 Received: from ccsua.ctstateu.edu by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA08456; Tue, 24 Aug 1993 16:44:52 -0400 Date: Tue, 24 Aug 1993 9:41:47 -0400 (EDT) From: "Government with a body count." To: fm-10@dg-rtp.dg.com Cc: WHITE@CCSUA.CTSTATEU.EDU Message-Id: <930824094147.27800653@CCSUA.CTSTATEU.EDU> Subject: Do heat sinks cause capacitance problems? Hi I was reviewing the FM-10 archives and Clint noted (in his 30W amp experience post) that he discovered that a transistor heat sink was causing capacitance problems. The FRB kit employs a top hat sink on a 2N4427 transistor. The top hat stands over L2 (1/8 to 1/4" clearance), a 5T center-tapped coil, and the top hat periphery overlaps C9, a 9-50pF varicap, with a vertical clearance of 3/8". Could this cause a problem? Of course, when I touch the top hat _in_situ_ my RF signal gets trashed, but I assume that this is to be expected given the fact that the case is a functional part of the transistor (?). Comments? Slaps to the side of the head? Thanks Harry white@csusys.ctstateu.edu From jchattin@marlin.nosc.mil Thu Aug 26 10:49:50 1993 Received: from marlin.nosc.mil by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA06493; Thu, 26 Aug 1993 10:49:50 -0400 Received: from ppc-17.nosc.mil by marlin.nosc.mil (5.65/1.34) id AA26867; Thu, 26 Aug 93 07:49:42 -0700 Date: Thu, 26 Aug 93 07:49:42 -0700 From: jchattin@marlin.nosc.mil (Jonathan M. Chattin) Message-Id: <9308261449.AA26867@marlin.nosc.mil> To: fm-10@dg-rtp.dg.com Subject: request fm-10 data Thanks. ^Z From @mail.uunet.ca:jaywon.pci.on.ca!sizone!sdavis@pci Thu Aug 26 14:12:47 1993 Received: from uunet.ca by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA06526; Thu, 26 Aug 1993 14:12:47 -0400 Received: from pci by mail.uunet.ca with UUCP id <101509(1)>; Thu, 26 Aug 1993 13:57:48 -0400 Received: by pci.on.ca (/\==/\ Smail3.1.28.1 #28.1) id ; Thu, 26 Aug 93 13:11 EDT Received: by jaywon.pci.on.ca (V1.16/Amiga) id AA06sdg; Thu, 26 Aug 93 13:01:46 EST Received: by sizone.jaywon.pci.on.ca (1.65/waf) via UUCP; Thu, 26 Aug 93 12:36:27 EDT for fm-10@dg-rtp.dg.com Message-Id: <6Jew9B1w165w@sizone.jaywon.pci.on.ca> Date: Thu, 26 Aug 1993 12:34:28 -0400 Organization: SIZone, Soviet Recommunization Assoc., Toronto 416-YOU-SAW-BOB From: sdavis@sizone.jaywon.pci.on.ca (Scott Davis) To: fm-10@dg-rtp.dg.com Subject: Happy..? I'm happy again. My FM-10 mod kit should be here any day, and my parts for Mycal's 800mW amp just arrived from Mouser. I just finished etching an integrated 800mW and 30mW booster circuit board - anyone else thought about combining both amp and booster onto one PCB? Once I did it, I realised that I think it's much nicer than throwing the booster onto the FM-10 itself.. Peace, Scott.