[hpsdr] Using Mercury to monitor final amplifier transmit signal

[Ken N9VV]

Hi Tom,
check out the principle of "pre-distortion linearization" that is being 
developed right now for new SDR equipment:
http://en.wikipedia.org/wiki/Predistortion

note that the Hermes design includes various Analog to Digital 
conversions as auxiliary inputs for all kind of measurements.

Looks like we Hams are on the very leading edge of some fantastic new 
FPGA and computer code to improve our transmitted signals <g>

GL de Ken N9VV
P.S. Pre-distortion has been around for >50 years in the Analog world :-)

On 2/6/2013 9:01 PM, Tom Cathey wrote:
> ***** High Performance Software Defined Radio Discussion List *****
> Mercury is presently set up to monitor the low level Penny output
> spectrum when transmitting.
> Is there a software or hardware modification to input some sampled FINAL
> amplifier RF (1 KW or whatever) into Mercury to monitor the high level
> amplifier spectrum?   (IE, disconnect the Penny sampling and connect in
> the final amplifier sampling instead)
> Or is a second Mercury required that is dedicated to monitoring through
> it’s normal antenna input?
> Thanks.
> Tom, K1JJ
> _______________________________________________
> HPSDR Discussion List
> To post msg: hpsdr at openhpsdr.org
> Subscription help: http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org
> HPSDR web page: http://openhpsdr.org
> Archives: http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/
>

 1360208220.0