[radio1]

Your radio. being in a condo, results in everyone's wall warts, pc/laptop power supplies (especially cheap ones), routers, wifi's and other devices ultimately destroying your reception. Interference is broadcast back through the condo wiring. Even if you disconnect all of your pc devices etc., others devices in the condo will destroy reception. Use a battery powered am radio to walk around your condo unit to hear the interference (same interference) and where it is less, you might find a better location for the radio. Then you can attack a better antenna solution for the radio.