XW-2D linear transponder signal id
Hi - can anyone identify this signal often heard on the XW-2 birds?
http://swigerco.com/gqrx_20190311_223926_145869769.wav
I enjoy listening to the SSB qso's on them, but curious what that is, sounds almost like a very slow fax like https://www.sigidwiki.com/wiki/WEFAX
One was particularly strong this morning https://network.satnogs.org/observations/555759/ (the line around +15KHz on the waterfall) along with another weaker one.
Just curious.
Thanks de kb4new
It has been present since the transponder's activation. I believe it is possibly some sort of image of the data downlink leaking through to the transponder passband.
It is definitely internally generated.
73,
Paul, N8HM
On Wed, Mar 27, 2019 at 9:28 AM Chuck Swiger cswiger@gmail.com wrote:
Hi - can anyone identify this signal often heard on the XW-2 birds?
http://swigerco.com/gqrx_20190311_223926_145869769.wav
I enjoy listening to the SSB qso's on them, but curious what that is, sounds almost like a very slow fax like https://www.sigidwiki.com/wiki/WEFAX
One was particularly strong this morning https://network.satnogs.org/observations/555759/ (the line around +15KHz on the waterfall) along with another weaker one.
Just curious.
Thanks de kb4new _______________________________________________ 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: https://www.amsat.org/mailman/listinfo/amsat-bb
I will listen for this today. Sometimes I hear what I think is local noise for me.
73, Scott, KA7FVV Director - KBARA. kbara.org Alternate Board of Director - AMSAT amsat.org Co-Owner WA7DRE 443.525 System Fusion Repeater Co-Owner KA7FVV 147.320 KBARA Repeater ka7fvv.net
On Mar 27, 2019, at 06:27, Chuck Swiger cswiger@gmail.com wrote:
Hi - can anyone identify this signal often heard on the XW-2 birds?
http://swigerco.com/gqrx_20190311_223926_145869769.wav
I enjoy listening to the SSB qso's on them, but curious what that is, sounds almost like a very slow fax like https://www.sigidwiki.com/wiki/WEFAX
One was particularly strong this morning https://network.satnogs.org/observations/555759/ (the line around +15KHz on the waterfall) along with another weaker one.
Just curious.
Thanks de kb4new _______________________________________________ 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: https://www.amsat.org/mailman/listinfo/amsat-bb
participants (3)
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Chuck Swiger -
Paul Stoetzer -
Scott