>It is NEVER a good idea to modify the equipment, but it IS good to disable the antennas (that wiring) by adding ferrite chokes >tuned to the transmitter frequency(ies). Tuning is accomplished simply by using the "right" ferrite mix and adjusting the number >of turns through the core.
Agreed, and I have done this multiple times. However, even such a simple form of assistance can be tricky, as I experienced once. In this case the antenna that made all the difference was the power cord of the TV. The TVI finally went away when I used a lot of turns on the ferrite. If I remember right, the arrangement was made visually acceptable to the neighbor by hiding this ball of wire under a rug. Then I made the mistake: I said something to the effect that if the TV set (one of the biggest CRT-based, all tube units I have ever seen) is using a lot of power, it would be good to check that the bundled cord doesn't overheat and cause a fire. A few days later I got a call from the neighbor, who said they don't want my toroids and I should come and pick them up. I did so, and relations were icy for years. Later the neighbor explained that they thought that the radio waves could heat up the choke and cause a fire, and I had to explain again that any power cord could heat up if heavily loaded with nowhere for the heat to go; nothing to do with the radio. >Another excellent move is to replace parallel wire loudspeaker cables (zip cord, no matter how >exotic) by twisted pair. #12 copper makes excellent speaker cable. >73, Jim K9YC For my own stereo system I used a very heavy parallel wire cable from Home Depot and twisted it with an electric drill. Easy to do and works very well. 73, Erik K7TV ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
