[hpsdr] A/J/O-SDR1k, Beta 1.9.1 SVN:1320 Feedback

[hartfuss]

John, that's interesting to hear. I run A/J/O with SDR-1000 with Beta 
1.9.1 SVN 1322 also with an external homemade amplifier. All works fine 
as reported earlier, however, found that the output power is higher by 
almost 3 dB under otherwise the same parameter settings. Reduced DRIVE 
also for TUNE and it works, but it was somewhat surprising.
73, Hans, DL2MDQ.


john_eckert at agilent.com schrieb:
> ***** High Performance Software Defined Radio Discussion List *****
> 
> 
> Thanks Bill!
> 
> I ran initozy11.bat and started svn1320 without any problems. No 
> warning or error messages.
> 
> I run a 3 GHz Pentium and get the 30% CPU usage at 96KHz sample
> rate and 55% at 192KHz.  
> 
> At 192KHz the audio was distorted and not usable.  I tried different 
> sound buffer sizes, different display update rates and process 
> priorities, but no luck. 
> 
> Finally, I reduced the DSP buffer size to 256 and it now works fine
> at 192KHz. I tried different combinations of DSP/Audio buffer sizes,
> some become unstable.
> 
> At 256 samples for both buffers the CPU is at 50% with 192KHz.
> 
> WARNING, in tune mode my power jumps around quite a bit. If I repeatedly
> click the tune button my output will jump from 300W to 600W.  I have
> the 1 watt radio driving an external amplifier and this might be peculiar
> to my setup.  I'm interested if others are seeing this.
> 
> Thanks Again,
> John
> k2ox
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