OK, so transmit works well on both CW and SSB.
I assume that's transmitting into a dummy load.
What kind of antenna do you have?
These are made to work with a good efficient and resonant antenna system, suitable for transmitting.
Ten feet of wire hanging out the window is not going to cut it.
The typical shortwave broadcast receiver has a lot more RF gain so it can deal with crummy antennas,
if the uBitx had that much gain it would overload when used with a decent ham antenna.
You might try touching your antenna coax center conductor to T2 pin 1, coax braid to the groundplane
on the bottom of the rig.? ?This goes around the relays at K1 and K3,
also around the 30mhz lowpass filter at L1,2,3.? Does it get louder?
Also short across the relay contacts labeled M1 and M2.
Those are there just to reduce the kerchunk sound when you hit the PTT switch to transmit.
A bad relay contact would seriously reduce receive audio (probably to nothing at all).
Otherwise it's down to the RF amps at Q10 and Q30, also the audio pre-amp at Q70.
Those are all auto-stuffed surface mount parts, and we seldom hear of trouble with any of that.
But it's possible.
Get some good light and a magnifier of some sort, look for bad solder joints.
What kind of test equipment do you have?
Jerry
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On Tue, Aug 7, 2018 at 08:23 PM, Terence Taylor wrote:
Both CW and SSB are making rated power.
