Could someone tell me the difference between a 75 to 300 ohm transformer that attaches to four screws vs. the one that attaches to two screws? Is there a difference? And should the one that attaches to two screws be attached to the UHF or VHF screws, does it matter?
I'm curious because I have an old TV from the '70s and I have it connected to the cable box via coaxial connections using the transformer. I recently got a new cable box (Comcast Cisco RNG100) and it's producing a very annoying buzz and static noise on all the channels, especially on the guide and menu. I didn't have a problem with the old box (SA Explorer 2200). I'm trying to figure out what the problem is. I thought maybe it's the transformer and how it's connected.
I had the cable box temporarily connected to a CRT TV from 2000 and I didn't notice the buzzing or humming. It was connected using the coaxial connections. So that's telling me something, but I'm not sure what exactly.