hi!
I'm poking at my ubitx 3.0. It hasn't behaved well at all on either transmit or receive. It turns out it was very not calibrated and balanced for transmit, so I've fixed that.
However, receive is .. not very nice. Ignoring the audio amplifier section (I've tried it with an LM386 amplifier), I've noticed that the receive side is misbehaving a bit. If I inject a sine wave? from an RF generator everything seems OK until the final mixing section. At which point the sine wave really isn't a sine wave any more; the bottom half of the sine wave is truncated. This gets fed to the audio section and .. well, it doesn't sound great.
Is this something others have seen on their v3 receive paths?
-adrian
(kk6vqk)
