Oldradiohand

About 80 miles to be precise.http://www.blue-room.org.uk/public/style_emoticons/default/biggrin.gif That's the distance of the unrepeatered reserve circuit from London to Daventry that the BBC used to use. Only equalised up to 5kHz for shortwave but still bloody impressive.

Nowt wrong with bell wire. Twisted pair balanced line audio circuits will go miles along the same cable without interfering and cat5/6 cable is not too dissimilar to old fashioned multipair audio cable. Just keep the send/return balance good, transformers are probably the best to use here.