I recently saved a Technics ST-k55 tuner from being tossed, and everything still seems to work pretty good, but I can't get enough reception for stereo and the guys at technics decided I only needed the 75 ohm screw terminals (no coax) on the back for this operation 75ohm - ground. In the past I have always simply connected a dipole antenna (What I keep on hand) with two leads to the 300 ohm, often which is labeled to share one terminal with the 75, because that's what I was told you do with a dipole and that works. The 75 ohm was taboo for me, but this unit doesn't have a 300 ohm option. So to experiment I hooked up one lead of the dipole onto an older tuner (which has both options 300-300/75-gound) on a 75 ohm post, letting the spare rest against a piece of plastic and that worked fine too, increased reception signal significantly, and the odds of tuning in with solid stereo. Differences in signal strength did not seem to matter so much as to what terminals I connected to, as properly orienting the antenna. So should I go out looking for a new antenna, I'm wondering what exactly I should be looking for in a proper configuration. Why are there generally two ratings of impedance if the 75 seems to work with a dipole? Does there happen to be reliable "backwards" compatability one way or the other?