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I’d look at the picture on the HFsignals site uBITX wire up section for volume control and compare your connections with picture. Otherwise no answer other than a bad volume controller. Good luck
On Aug 2, 2019, at 6:32 PM, Rob French (KC4UPR) <robert@...
Super excited, just put together my uBITX and love it, though I haven't successfully managed any 2-way QSOs yet. I've got a few spots on RBN, so I know something's getting out... Anyway...
I've noticed that the volume control (I'm using the stock potentiometer) is super sensitive at the low end. i.e. As soon as I turn it on, I never turn it more than about 1/4 turn. And if I go more, it distorts super quickly. Very small adjustments of the knob change the volume pretty drastically. I actually wondered if I wired the pot backwards! But, I checked against the schematic and also this page ( https://ubitx.net/wiring-up-the-volume-control/
), and as far as I can tell, I've done it right (green, orange, yellow, from L to R). Any other thoughts?