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Originally Posted by qasdfdsaq
Possibly. To be fair I don't know what actual frequencies powerline networking equipment uses, Wikipedia suggests something in the two-digit Mhz range. With that in mind, ADSL and Ethernet both use unshielded cabling and frequencies of 0-17, 30, or 100Mhz at incredible densities over large distances including overhead wiring, so how much of a problem can it really be? Sure, AC mains wiring isn't twisted pair, but again, the signal doesn't go much further outside the house whereas xDSL does.
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Twisted pair will not transmit even at 100Mhz as the wiring isn't an efficient antenna and is filtered/terminated both ends.
With PLT's it isn;t the fixed frequencies that are the worry as they tend to be within a preset band that will not interfere, but if for example it's transmitting at X freq a poorly filtered PLT will also be transmitting at half X, X2, X3, X4 and many other multiples and divisions. It's the filtering that makes a PLT just another benign network device or one with poor filtering a spawn from hell
Couple that with non-terminated wiring (spurs off to a plug) you have an efficient antenna system broadcasting sproggies all over the place.
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