I used to own an Omni D 546, and I did have some problems with it, but not a
receive problem but an email to TenTech, got me going in the right
direction, and actually the manual that is supplied gives a huge amount of
info on fault finding etc. Perhaps you could try to find a copy?

73
john
"Rick" wrote in message
...
Please help me to solve my omni-d problem.... It lost 90% of the receive
side.I can barely hear signals that were usually 30 over 9.but what gets
me it is that I flip the switch in the back to "receive" instead of
leaving it in the transceive position and use the receive jack(not the
pl-259) and it receive normally.I opened it and checked the
relay(contacts) and they are ok....I took a wire antenna and jumped it to
the "input signal pin" of the rx mixer and the reception cames back....any
ideas guys.......