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AGN issue with Calibration V5 #calibration


 

Hi,

2019 I got the V5 uBITX - Suddently made enhancements

- nextion Display - CEC Firmware - AGC, Audio CW Filter - Audio Amplifier, AUX connection for FLDigi waterfal

Try now to make a new calibration bc QRG and BFO was not matching (already for days reading instructions, watch video and try)

I work for saving the settings with the CEC Manager.

Now:

I could now set the QRG until abt 200 Hz exactly. The problem, if I make this in setting 100% exact then press PTT - it jumps abt 200 away.

I am looking with the RWM 4996, 9996 14996 or WWV 10 000 kHz. Also have an accurate Sig Generator with max 60Mhz.

It's the same with the BFO, not this position where I have tuned - always a bit 1-200Hz on them.

And if I send CW - my sending is also abt 200 Hz above the shown QRG. I check this with the Web SDR Twente in PA.

Just ow listen the RWM on 9996 - but for my 700 Hz CW tone have to tune on 9995.110
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Also own a uBITX V6 - this runs more or less OK. Here I build in the SOTA Variable Filter. see scematic on page from V6

I am a CW enthusiast - SSB is not vy important for me.
**
73 de
HB9FIH / HS0ZLS Erich

Here on my Web Abt uBITX V5:

here the V6 :