To avoid having laptop running in the shack, which occasionally produces some QRM, I can send received audio from the shack to a desktop computer in the house on a twisted telephone pair. This works
Hi Hugh, Maybe there is some improvement when trying 2 isolation transformers and grounding the TP cable in the center? The other solutions will not work well i think, because the dynamic range is no
Thank you Stefan. I could try two microphone transmitters back to back as I have only one 1:1 isolation transformer and again I might try a short range LED link although these tend to have linear mod
The AC 230 power supply in the shack and the desktop computer grounding wire are equipotential, share the same grounding system? 73 de Claudio ik2pii -- ZE-Light e ZE-Pro: servizi zimbra per caselle
Hello Claudio. Any combination of grounding wire, or no wire, makes no difference, the QRM is directly radiated. If you see my "shack" there's just enough room to sit by the desk so I can't rearrange
Hi Hugh, But then the problem should be solved when placing the isolation audio transformer on the laptops end, so the wire does not act as an antenna. Did you try that? Maybe grounding the laptop to
Hello Stefan. The QRM is direct from the circuits in the computer, having a cast alloy frame, grounding it helps tremendously most of the time. What I will do is to feed the balanced 300ohm radio ant
