[radiomikee]

With all due respect to AI2V, I (AB3CX) have been using coax fed amatuer radio antennas to feed various antique radios including all the usual Philco 1930's sets for years. They work great this way. Believe me, you never heard so many stations. There is no special need for a balanced line in, or a balun. Baluns are important in certain transmitting settings to prevent common moder currents on the braided shields of feedlines, or for impedance matching in going from 50-72 ohm coax to 300-600 ohm balanced feedlines. No way are antique radio receivers on HF fussy enough to be susceptible to issues in this area. In fact, the typical longwire random length antenna is completely unbalanced as most folks use it, which is as a direct feed with no ground. My point in all this was that the person who started this thread assumed he had line interference which he does not have, he has RF interference. If he wants to avoid it he can use an outdoor antenna with shielded cable feedline, away from the source of the RFI, which he already documented is inside his house. Further attempts to deal with the power line are a distraction and waste of time/