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. Thanks!
Steve AI9IN
Steve,
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.
73s,
Alan WA4SCA
<-----Original Message----- <From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of <skristof@etczone.com <Sent: Saturday, November 11, 2017 06:50 AM <To: amsat-bb@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. <Thanks! < <Steve AI9IN <_______________________________________________ <Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available <to all interested persons worldwide without requiring membership. Opinions <expressed <are solely those of the author, and do not reflect the official views of AMSAT- <NA. <Not an AMSAT-NA member? Join now to support the amateur satellite <program! <Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
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