[amsat-bb] Can you receive images from AO-92?
Scott
scott23192 at gmail.com
Fri May 24 19:50:52 UTC 2019
The camera on AO-92 is only active when commanded by the ground team and
does not use the DUV, but rather "takes over" the downlink and uses a wider
signal.
Adjustment to your SDR software is required when a camera download is
active. The normal settings that one might use for voice and/or DUV data
will not work for the camera downlinks.
Here is a screen shot of one SDR app (HDSDR) where you can see the 20k of RF
bandwidth and 15k of audio output bandwidth being used to successfully
received data from the camera when it was active.
https://www.qsl.net/k/k4kdr//images/ao92-hdsdr-camera-active.png
Of course the FoxTelem software needs to be set appropriately as well to
accept the wideband data. "Auto" is the best setting since it allows the
FoxTelem dashboard to work with both DUV data or broadband camera downlinks
when they are active.
Someone else might be able to confirm the status of any other cameras
currently active or planned for future missions.
-Scott, K4KDR
========================================
-----Original Message-----
From: Mandelbrot Set via AMSAT-BB
Sent: Friday, May 24, 2019 10:41 AM
To: amsat-bb at amsat.org
Subject: [amsat-bb] Can you receive images from AO-92?
Is the camera turned on? I was planning on using HDSDR and FoxTelem. I
think that there are data packets sent as Data Under Voice (DUV) in the
audio band from 0 to 200Hz in the same FM channel as the transponder audio.
Can you really receive an entire image during a short satellite pass in
that little bandwidth? Do other Oscar satellites have cameras?
More information about the AMSAT-BB
mailing list