[hpsdr] PowerSDR panadapter during TX

[Warren C. Pratt]

Hello Heikki,

When NOT using DUP mode, during TX you are viewing the output of the TX 
DSP channel.  The TX DSP channel is set to run at a samplerate of 96K.  
Therefore, the bandwidth available to display is 96KHz.

During RX OR during TX when using DUP mode, you are viewing RX signal(s) 
as they are being sent from the hardware to the PC.  The bandwidth of 
such an RX signal is equal to the sample rate you set on the 
Setup=>Audio/Primary tab.  However, if "Limit Stitched Receivers" is NOT 
checked, the RX1 panadapter will display three receiver bandwidths 
side-by-side.

Here's an example:  Assume DUP is OFF, "Limit Stitched Receivers" is NOT 
checked, and the Audio/Primary sample rate is set to 384K:
* During TX you'll see the ~96KHz of output bandwidth from the TX DSP.
* During RX you'll see ~3*384KHz of receive bandwidth on the RX1 
panadapter and ~384KHz on the RX2 panadapter (if RX2 is turned ON).

73,
Warren  NR0V

On Dec 27, 2015, at 10:37 PM, Heikki Ahola wrote:
>>> ***** High Performance Software Defined Radio Discussion List *****
>>>
>>> Hi!
>>>
>>> In my experience, the frequency range of the PowerSDR mRX PS  panadapter/waterfall changes/reduces during TX periods. This is something I have not seen in other PSDR variants I have been using. Is there any control on this ?
>>>
>>> 73 de Heikki (OH2LZI)

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