While broadcasting and another of your radio neighbors decides to use the frequency you have chosen, You are being QRM'd. This is unfortunate but since you are not supposed to be there anyway, just move to another frequency!
While broadcasting and YOUR transmitter is QRMing your neighbors TV, Radio, Stereo, Phone, etc. you have a SERIOUS PROBLEM! Do not ignore it! From what little information on pirate busts I have obtained, MOST seem to be related to unresolved interference problems! It is in your best interests to take a active approach to solving your QRM problem. If you do not solve QRM problems, the FCC WILL take steps to solve the problem! Since we know what their solution is, I am going to present easier, less costly, painless ways to solve your problem.
START WITH YOUR OWN GEAR - Perhaps the most overlooked part of any station is a good ground system. See the chapter on Station Ground Systems.
Use a low-pass filter on your transmitter. This is a passive device that you insert into the feedline between the Transmitter and Antenna. While not difficult to build, for a beginner, I would recommend purchasing one. You can expect to pay between $25 to $75 for a GOOD low pass filter. They are rated in Watts so you need to know much power your transmitter runs so you won't get one that is to "small". Some of the better units are tuneable, which will help to knock down harmonic interference greatly. Any Ham Radio Equipment catalog will carry several Low Pass filters, so they are not hard to find.
While more advanced, your Transmitters Parasitic Supressors could be "smoked". Your Transmitter will appear to operate normally, as it should, if your supressors are fried but will generate more harmonic type QRM than is normal. See Figure 1 for a schematic of a parasitic suppressor. Usually mistuning a transmitter is enough to burn out the resistor in a suppressor and since the resistor is in parallel with the coil, you cannot easily tell if the resistor is fried with out un-soldering one side of the coil. If the resistor looks like a charcoal cylinder, it's pretty safe to assume it's bad. "Hey, my Transmitter doesn't use parasitic supressors!", find somebody to add them. It is not terribly difficult and can be done by anyone who knows how to solder and wind some wire around a resistor! Learn how to properly tune your transmitter! If your transmitter is not tuned correctly you could be generating interference. Read and study your manual!
Do not "over-drive" the transmitter! This will generate QRM and also make your signal wide, splatter, and sound distorted! It is easy to over-drive any Transmitter. The best way to check if your pushing your transmitter to hard is to listen to yourself off the air. You may find that you need to put some distance between yourself and the transmitter to keep from overloading your receivers front end into distorting. This is simple to rectify, simply reduce the "Audio Gain" on the transmitter or reduce the line level audio feeding the transmitter until your signal's audio clears up.
Use a properly constructed, RESONANT, antenna! See the chapter on antennas for more information. You could find that it is your choice of an antenna that is giving you problems.
Watch the TV in your house to see if you are interfering with it. Check your phone, stereo, etc. and notice any interference problems, if any. This will help to determine if you are really at fault. It is always convincing if you can demonstrate that you do not interfere with reception in your own home.
"I'VE DONE ALL THIS AND I STILL QRM MY NEIGHBORS!" - This is where the game can get interesting and you need to have your "cover story" well rehearsed in order not to "tip off" anyone to ILLEGAL activities! If you have any experience with phone phreaking, the term "Social Engineering" will mean a great deal to you. Should you not know what "Social Engineering" is, I will try to tell you what it means in general and how to apply it to dealings with neighbors.
Social Engineering is the art or getting information out of people without raising their suspicions. Sounds easy doesn't it? Believe it or not, in practice it is quite easy to use.
Remember, none of the following information will do you ANY good if your neighbor and yourself are already on bad terms! The damage has already has been done and you should concentrate your efforts on the preceding information! It is in your best interests to stay on friendly terms with your neighbor because He or She can very easily end your pirate career with unpleasant results!