The most common receive/audio path issues from kit assembly, that are independent of transmit, are:
1) T401 - the trifilar transformer.? Make sure you matched the pairs properly, and all of the solder connections are good - sometimes the insulation doesn't get completely burned from the wires.
2) L401a/b - the receive filter transformers.? Same checks as above.
3) In some cases the PCM1804 chip has failed, cause unknown, but perhaps due to handling/ESD during assembly.? See
/g/QRPLabs/wiki/37111?
It may be helpful to post screenshots of the "RF filter sweep", the "Image sweep", and the "Test ADC I/Q" tests, which may help narrow down the problem.? They are done on a per-band basis, just do one band that you are having the problem on.? Compare them to the Operations manual examples.
Stan KC7XE
