What would cause one bad chain when using 2x40


what would cause one bad chain when using 2x40 ?

Any ideas ?

Assuming this is a B5C setup ? If so then check LMR/Jumpers and Barrel connectors if any. I had this problem last year and it eventually was found to be one of the feedhorns.

Anyone ? --------------------------------------------

I’ll echo what Ian said. This looks like a hardware problem. Start with swapping coax and connectors since they are simplest and cheapest to access, and then replace the radio and antenna with a spare.

It may be difficult to tell which side of the link has the problem (e.g. transmit problem on one side, or receive problem on the other side) leading to lower power on that chain. Start on the side you suspect has the problem, and then move to the other side if there is no change.