Re: uBITX - super touchy low end volume #ubitx #ubitx-help

Audio taper needed?
de Frank KG9H

On Aug 3, 2019, at 7:26 AM, Edward Reynolds via Groups.Io <n7snt@...> wrote:

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
Ed de N7SNT 

On Aug 2, 2019, at 6:32 PM, Rob French (KC4UPR) <robert@...> wrote:

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 ( ), and as far as I can tell, I've done it right (green, orange, yellow, from L to R).  Any other thoughts?


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