[amsat-bb] XW-2D linear transponder signal id

[Paul Stoetzer]

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 at 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
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