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Re: We're still at square zero....

I also lived within 100 feet of one for several years myself. I also lived 6 blocks from a commercial FM transmitter, WTFM 103.5 in a wood frame house which of course offered no shielding. Although both of these sources were problems with television reception, phono preamplifiers, and even people complaining about hearing them through the almalgam fillings in their teeth, I never experienced having them come through the speaker wires directly. I find it difficult to reconcile the fact that using a crystal radio receiver with a good antenna driving a 600 ohm high sensitivity earphone, it is still hard to hear with my ears is right next to the earphone, with the reports that a poor antenna made from speaker wire can drive an 8 ohm loudspeaker to anything audible. I've just had my hearing rechecked two weeks ago an although I am in my mid 50's my hearing is still excellent.

I calculate the typical radio signal in the range of 100 microvolts into 75 ohms as producing an order of magnitude of about 0.1 to 10 nanowatts of power. It seems to me that even this level of power is insufficent to have any effect on audio system performance at the speaker level. I'd expect speaker wire to deliver even less unless the amplifier somehow not only detects it but amplifies it as well. Do you have any measurements to support this possibility?

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