旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 � The International Information Retrieval Guild � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸 Presents 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 � The IIRG Technical Journal Volume I, Issue 2 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 � Dec 1993 컴컴컴� / 컴컴컴� Editor: 럑u�is � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 � - In This Issue of the Journal - � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 � The IIRG Line Monitor � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸 ////// ////// /////// //////// // // // // // // // /////// // //// // // // // // // ////// * ////// * // // * ///////// * �]� International Information Retrieval Guild �[- Member and Support Sites Rune Stone BBS [WHQ] [2o3-832-8441] Lightning Systems [414] Wired World BBS [+39] Deadcity [+61] Cyberdyne Network [+49] Unauthorised Access [+44] BluePhishen' [212] The Works [617] Ware House [2o3] [Incarcerated] Alliance BBS [612] Hollow Tree [313] Liquid Euphoria [914] The Web [2o3] The Black Lodge [5o8] Abiogenesis [816] Kaotic Attractor [5o8] Uncensored [914] CLU 'puternet [515] OFFICIAL DISLAIMER... All information in the IIRG Technical Journal is Member contributed material. The Publishers and Editors of THE IIRG disclaim any liability from any damages of any type that the reader or user of such information contained within this journal may encounter from the use of said information. All files are brought to you for entertainment purposes only. We also assume all information infringes no copyrights and hereby disclaim any liability or responsibility. IIRG Technical Journal is (C) 1993 by The IIRG IIRG and INTERNATIONAL INFORMATION RETRIEVAL GUILD is (C) 1982 -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Note Beginning with this issue, a typeset, printer-ready version of The IIRG Technical Journal, complete with all drawings and schematics is provided in HP PCL format. If you have access to an HP Laserjet Series ][ or compatible, simply copy the included IIRGTJ02.PCL file to the printer, i.e., copy iirgtj02.pcl lpt1: /b. Postscript support for future issues is in the works. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � Line Monitor Device � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � Design and Implementation: Mercenary � � Technical Quality Assurance: Tom Icom � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 旼커旼컴컴컴컴컴컴컴컴컴컴커旼커 � 척 Section 1: Principle 척 � 읕컨좔컴컴컴컴컴컴컴컴컴컴컨좔켸 Given the wide availability and ease of use of today's telephone surveillance devices, it is almost a necessity to have in place a means to detect unauthorized monitoring of your voice and data lines. While it is true that there is no device capable of detecting a "tap" at the switch (as most will be that are performed by federal agencies), it is still advisable to check for parasitic taps that are planted within the immediate vicinity of the phone, as will be the case with those installed by freelancers such as private investigators and corporate spies, or in some instances, those placed by local authorities or even your spouse or the kid next door... In this issue of the IIRG Technical Journal, we will look at an inexpensive means of providing what we consider to be a basic level of protection for your phone lines. The Line Monitor will warn of both parasitic intrusions on your telephone lines and eavesdropping on an extension phone. The basis for our design is the commonly available ECG 955M IC-Timer/Oscillator Integrated Circuit. The circuit monitors the line current and looks for any distortion to voltage levels or line impedance that would be caused by a parasitic tap. 旼커旼컴컴컴컴컴컴컴컴컴컴컴컴컴왯컴� � 척 Section 2: Implementation 척 � 읕컨좔컴컴컴컴컴컴컴컴컴컴컴컴컴좋컴� Parts List The following items are needed for construction of the Line Monitor. References to Diagram 1 apply to the included shematic contained in DIAG1.GIF. 1. Diagram 1, MOD IN One 4-Position PCB Modular Jack Mouser Stock # 154-UL6441 Price $1.08 Digi-Key Part # H9081 Price $1.57 2. Diagram 1, D1 Eleven 1N4148 Diodes ECG Cross Part # - ECG519 - D-Si, Fast Switching, 4 ns, 100 prv,DO-35 NTE Cross Part # - NTE519 - Diode-Si Fast Switching, DO-35 3. Diagram 1, 955M One 7555 IC ECG Cross Part # - ECG955M - IC-Timer/Oscillator, 8 Pin DIP NTE Cross Part # - NTE955M - IC-Timer/Oscillator, 8 Pin DIP 4. Diagram 1, D2 One 1N5246B Zener Diode ECG Cross Part # - ECG5025A - ZD - 13 thru 200.0V, 0.5W, 5% tolerance,Axial Lead NTE Cross Part # - NTE5025A - Zener Diode, 16.0V, 1/2W, DO-35 5. Diagram 1, T1 Three PN3646 NPN Transistors ECG Cross Part # - 123AP - T-NPN, Si, AF/RF AMP, CB Dr, TO-92 NTE Cross Part # - NTE123AP - Transistor-NPN, Si-AF/RF AMP, TO-92 6. Diagram 1, POT One Potentiometer, Spectrol 63X101 Mouser Stock # - 594-63X101 - 100 ohm Price $1.10 Digi-Key Part # - 1FA12 - 100 ohm Price $0.99 7. Diagram 1, C1, C2 Two 104K Capacitors, 0.1�f Mouser Stock # - 140-PD250K104 Price $0.51 Digi-Key Part # - P3104 Price $1.02 8. One Project Box With PC Board Radio Shack Catalog # 270-283 Price $4.39 9. Diagram 1, RED, GREEN One Green LED, One Red LED Radio Shack Catalog #'s - Green - 276-022 Price $0.99 for 2 - Red - 276-041 Price $0.99 for 2 10. Diagram 1, MOD OUT One Modular to Modular Phone Line Cord Radio Shack Catalog # - 279-390 Price $0.99 11. Resistors (Various) Diagram 1, R1 - One 27K Ohm (Red, Violet, Orange) Diagram 1, R2 - One 4.7K Ohm (Yellow, Violet, Red) Diagram 1, R3 - One 10 Ohm (Brown, Black, Black) Diagram 1, R4 - Two 47M Ohm (Yellow, Violet, Green) Diagram 1, R5 - Two 10M Ohm (Brown, Black, Blue) Diagram 1, R6 - One 10K Ohm (Brown, Black, Orange) Diagram 1, R7 - One 1M Ohm (Brown, Black, Green) Circuit Layout Most construction details can be gleaned from the provided schematic. However, two points should be noted. Firstly, for ease of construction, we would advise that the parts be laid out on the pc board before any soldering is performed. Following the placement shown in the schematic will provide a good starting point. Lastly, while it should be obvious, one end of the modular-to-modular phone line cord needs to be cut in order to solder the leads to the pc board at points Y, R, G, and B. Line Monitor Installation On a single-line modular telephone, you must first remove the modular cord that connects the telephone to the wall jack. Plug the Line Monitor's modular connector into the wall jack and insert the telephone's modular connector into the line monitors modular jack. Line Monitor Calibration 1. Pick up the telephone's receiver. 2. Dial a number of a local VMB system or any other demonstration line. 3. After your call is connected, adjust the line monitor's potentiometer until the red LED comes on. 4. Slowly turn the potentiometer's screw back until the green LED comes on and the red LED goes off. 5. Line Monitor calibration is done, but please note: If the red LED comes on while dialing a number, then the sensitivity adjustment is too high. Re-adjust your monitor until this does not happen. Line Monitor Notes: 1. A "Clear" (Green LED) condition will be shown as long as the monitored phone line is within tolerance for line impedance and voltage. 2. The Line Monitor is not designed to work on phone systems that have 24 Volt phones or stations. 3. The line monitor device is designed to detect hard wired (parasitic) taps. Consequently, it will not detect high impedance devices such as suction-cup magnetic taps 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� Editor's Note: It is mandated within the Declaration of Independence, and The Constitution of the United States that it is every citizen's responsibility to employ whatever means necessary to keep this country free. James Madison once said "A people who mean to be their own governors must arm themselves with the power knowledge gives." The great senator Barry Goldwater said "Extremism in the defense of liberty is no vice. Moderation in the pursuit of freedom is no virtue." Therefore, we believe that the use of techniques and/or devices described in this publication is justified in challenging the totalitarian bastards who consistently take actions to eliminate our rights of privacy and personal freedom guaranteed under the constitution, but only after all other means of dealing with these individuals have been exhausted. "When more than fifty percent of the people are breaking the law, there is something wrong with the law..." 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� Comments and suggestions about this and future issues of the IIRG Tech Journal are welcome. Contact 럑u�is at the IIRG WHQ, the Rune Stone. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- The IIRG Technical Journal (C) IIRG'1993 - May Odin Guide Your Way - -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-