[amsat-bb] SDR# settings for AO85?

Alan wa4sca at gmail.com
Sat Nov 11 13:34:30 UTC 2017


Which dongle are you using?

I have found that the settings are not very sensitive, and the best to
worst, based on some fairly extensive A/B testing, vary no more than 10%.
My current values with my Airspy:

Blackman-Harris 7
BW 10K
Order 200
AGC Off !!!

Note that AO-85 is currently in a period of continuous illumination which
shifts the beacon frequency 1.5-2 KHz lower than normal.  Some have found
that this is enough to decrease the throughput.  That will end Wednesday,
and be back to normal a few days after that.




<-----Original Message-----
<From: AMSAT-BB [mailto:amsat-bb-bounces at amsat.org] On Behalf Of
<skristof at etczone.com
<Sent: Saturday, November 11, 2017 06:50 AM
<To: amsat-bb at amsat.org
<Subject: [amsat-bb] SDR# settings for AO85?
<What are the optimal settings on SDR# (e.g. filter, order, bandwidth,
<etc.) for downloading AO85 DUV data? I used to get 20 or so data
<payloads on a good pass, now I'm lucky to get 1 and I can't figure out
<what the difference is. Any constructive help would be appreciated.
<Steve AI9IN
<Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
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