[amsat-bb] Fw: Operating SSB sats

[Paul Stoetzer]

K7TAB was operating without computer control, so its not surprising
you'd have to chase him a bit.

73,

Paul, N8HM

On Fri, Feb 8, 2019 at 4:14 PM k6vug at sbcglobal.net <k6vug at sbcglobal.net> wrote:
>
> Thanks Patrick.
>
> Not to spam the BB, but here is one last clip - working K7TAB via CAS-4B this morning.
>
> https://drive.google.com/open?id=1DYbg1Ua8_MfZnBjpngBjGxAApB5fcq82
> I use the CW beacon to wait for adequate signal and then (at 00:40) switch to the transponder pair, adjusting the uplink with a tone burst until it comes in at about 800 Hz on the bottom display.  After that I can move the down-link around the pass-band and don't have to worry about the uplink. HRD (and SatPC32) do a great job of handling the Doppler adjustments.
>
> Obviously, you'll notice the signal from the CAS-4B ges pretty strong as soon as it comes up above 15 degrees or so.  I keep an eye on the CW beacon (at the left of the waterfall) throughout the pass and watch-out for fading due to foliage, buildings etc.
>
> Fast forward to 3:20, I've tuned to K7TAB and start responding.
>
> You'll notice that K7TAB drifts a little as he is speaking.  However, you'll also notice that K7TAB has moved quite a lot AFTER I have responded and so I have to re-tune the down-link to hear the response properly. Well, that is the issue I wish to illustrate, and am still working on it.... :)
>
> Again, sorry for several posts, won't post any more until I have figured it out.
> Have a great weekend.
>
> 73!Umesh, k6vug
>
>
>
>     On Thursday, February 7, 2019, 8:52:05 PM PST, Patrick STODDARD <patrick at wd9ewk.net> wrote:
>
>  Umesh,
>
> Very nice! Thanks for sharing the video clip.
>
> 73!
>
>
>
>
> Patrick
>
>
>       From: "k6vug at sbcglobal.net" <k6vug at sbcglobal.net>
>  To: Patrick STODDARD <patrick at wd9ewk.net>
>  Sent: Thursday, February 7, 2019 11:26 PM
>  Subject: Re: [amsat-bb] Operating SSB sats
>
>  Hi Patrick,
> About the RTL-SDR, I just wanted to share a short clip I recorded capturing CAS-4A CW beacon with HRD handling the Doppler tracking.
>
> https://drive.google.com/open?id=1UCrYTb74ZnVG2Xc3FWlF7YImFasjwCKz
>
>
> 73!Umesh
>
>
>
>
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