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John,<br>
I have a different RX2 S-ATT problem with PowerSDR 3.1.5 and
Angelia/ANAN-100D at times. When it occurs I can change bands and
then hit the TUNE button, the RX2 S-ATT goes from 0 to -31 as
expected, but when I hit the tune button again to cease tuning, RX2
S-ATT drops to -20, not 0 as expected. Seems to happen consistently
when changing from 20 meters to 40 meters and then hitting the tune
button with 3.1.5, but previous versions seemed to have the issue on
all bands, if I remember correctly.<br>
<br>
I have been successful in resolving my situation by resetting
the database. I finally discovered what was causing this to
happen. ME. If I close the PowerSDR window without hitting the
power button to disconnect the radio etc, the next time I start
PowerSDR the S-ATT -20 problem re-appears. Old habits die hard and
I keep closing PowerSDR with the windows X button, and have to reset
the database the next time I start PowerSDR.<br>
<br>
Bill KC9XG<br>
<br>
<div class="moz-cite-prefix">On 6/26/2013 11:45 AM, H.A.Meijer
wrote:<br>
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<div class="moz-cite-prefix">Hi John,<br>
<br>
I'm seeing sometimes same things at my Alex filter boards when
going from TX to RX.<br>
But also sometimes I see that when going from RX to TX that not
always the 31dB attenuator is switched on in a correct way,<br>
you can see this at the panadaptor . (I did put the 31dB att
on when TX, to prevent rx overload in the setup).<br>
So maybe a timing problem at the spi data bus to the LP/HP
filters?.<br>
<br>
Bert<br>
<br>
Op 26-6-2013 17:25, John Ackermann schreef:<br>
</div>
<blockquote cite="mid:51CB07D7.4070208@febo.com" type="cite">*****
High Performance Software Defined Radio Discussion List ***** <br>
<br>
I operated my TAPR-built Hermes, ANAN-10 amp, and TenTec 714
100W amp for Field Day. The software was mRX FFT 3.0.16 running
on a Lenovo X200 laptop with Core2 Duo P8600 2.4 GHz CPU and 4GB
RAM. The OS is Windows XP with current updates. I'm running at
192ksamples with default buffer sizes. <br>
<br>
Things generally worked just fine -- in fact, excellently, but I
noticed one anomaly and wanted to see if this was a known issue,
or if there was a fix. <br>
<br>
Several times the step attenuator got stuck at 31dB in receive
mode. I noticed this under at least two circumstances: (a) a
failed software start, where I hadn't let the IP stack do its
thing before starting the radio, and then having to re-start
PowerSDR, and (b) sometimes when returning from TX to RX in CW
mode. When it happened on the TX/RX transition, I usually heard
some noise bursts on the monitored audio during the TX period. <br>
<br>
The CPU load shown by PowerSDR seems to stay in the 30% range,
and there are no other apps running. Is what I'm seeing likely
to be a bug, or a resource deficiency? And are there any
suggested fixes? <br>
<br>
Thanks! <br>
<br>
John <br>
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