[Elecraft] Re: K3: ADC Ref calibration

[Tom Whiteside]

>Hi Tom,
>
>At present only the PLL voltage and supply voltage measurements are 
>affected by the ADC REF calibration. You shouldn't have to re-do any 
>other calibration steps.
>
>73,
>Wayne
>N6KR

Thanks Wayne,
    What prompted the question was getting a PLL error when using the sub receiver during the 10M contest.   I was running QRP so did not think it was temp related.   I've not had any occasion to try the sub receiver on 10M after initial testing so don't have a pre-firmware data point on that.   Re-running the PLL cal on the sub receiver cleared the problem.    I guess I should re-calibrate the main receiver PLL too...   Have not noticed any problems with the main receiver after doing the ADC Ref cal...

    I also had problems with SSB and my Alpha this weekend that I had wondered were maybe related to either the firmware upgrade or this ADC calibration.    I had to crank the power back to the point of turning off the 100W K3 amp to not overdrive the Alpha!   Calibrating the power at 50W did not affect that.   Have not tried reverting to the previous beta firmware.


Tom Whiteside N5TW
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