Hello
This is my first post to the group. I am building a TRX2 for a friend and all was well until testing of the receiver. I found that a LSB signal was being received on USB just as well as it was on LSB!! After much checking of circuit diagram and inspection of my soldering, nothing seemed to make any difference. I even swapped the polyphase boards and the fault persisted - no change. To cut a long story short, discussion with other radio operators about the problem suggested a second look at the polyphase boards. Found it - several dry joints which were corrected and all was well. Transmit performance also improved. Everyone is now happy. Now building the 100W PA(D)
Cheers.
Don
ZL2LDX