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Hi Nige,<br>
<br>
The pre-distortion must be turned on by the user to be active -- so,
there is no requirement to use it. In fact, I expect that many
people will not establish the feedback path that is required to
calibrate. However, it would be interesting to try using it with
transverters. For it to function correctly with a transverter, the
receive down-conversion path would have to be very linear to provide
valid feedback for calibration. <br>
<br>
Also, note that the pre-distortion is "adaptive"; it calibrates to
correct the amplifier in use. No specific amplifier characteristic
is assumed in the code.<br>
<br>
73,<br>
Warren NR0V<br>
<br>
<div class="moz-cite-prefix">On 11/16/2013 1:36 AM, Nige G7CNF
wrote:<br>
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<pre wrap="">***** High Performance Software Defined Radio Discussion List *****
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Thank you very much for all your hard work. One issue that I
haven't been able to resolve in my head from the TeamSpeak session
is whether the predistortion will be user-activated? I ask this
because I use HPSDR (ANAN) with transverters and obviously the
receiver will not be able to monitor the final output for this
function and was concerned at the implications of hard-coded
predistortion in this scenario.<br>
<br>
Best wishes,<br>
<br>
Nige.G7CNF<br>
<a moz-do-not-send="true" href="http://interference.org.uk/">interference.org.uk</a><br>
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