[hpsdr] Level calculation error in Two Tone Test generation routine

Warren C. Pratt warren at wpratt.com
Wed Nov 23 20:10:06 PST 2016


Hi John,

Thanks for pointing out those controls.  Other than for the Penelope 
board, those settings figure into the control of DAC current.  They 
don't change I-Q.

73,

Warren  NR0V


On 11/23/2016 7:40 PM, John Marvin wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Perhaps this is a bit pedantic, but the "PA Gain" tab under "PA 
> Settings" provides a drive level correction factor on a per band basis 
> (at least that is my understanding). This is to help compensate for #3 
> below, i.e. the varying frequency dependent gain characteristics of 
> the various analog amplifier stages.
>
> This is probably not a significant factor in the discussion, but it 
> might help explain any variances seen if someone was actually looking 
> at the digital I/Q levels at the protocol level.
>
> 73,
>
> John
> AC0ZG
>



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