[hpsdr] PowerSDR panadapter during TX

[Joe Martin]

Heikki, 

I may have mis-spoke.  I think the Tx bandwidth is fixed according to a fixe 48 ksps sampling rate, now that I think about it, whereas the Rx bandwidth can vary depending upon the setting in Setup > Audio.  

But the effect you mention could be quite noticable if you were using stitched recevier mode nonetheless. 

73, Joe K5SO

On Dec 31, 2015, at 11:43 AM, Joe Martin wrote:

> ***** High Performance Software Defined Radio Discussion List *****
> 
> Hi Heikki, 
> 
> I did not see any reply to your query so I’ll venture a question and suggestion: 
> 
> Are you using the “stitched” mode in Rx?  If so, keep in mind that the bandwidth available in stitched receiver mode is almost three times that when not in stitched mode.  Non-stitched mode bandwidth is that of a single receiver with the bandwidth being determined by the sampling rate selected in the Setup > Audio menu.  The panadapter bandwidth in Tx mode is the same as that for a single receiver (i.e., non-stitched receiver mode).  
> 
> To make the Tx and Rx bandwidth displays equal check the Setup > Hardware Config > Limit Stitched Receivers “1-Receiver” checkbox.  
> 
> Is that the problem?
> 
> 73, Joe K5SO
> 
> 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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