[amsat-bb] so-50 hint

Matthew Stevens matthew at mrstevens.net
Fri Sep 30 19:50:33 UTC 2016

Hopefully I've got the hang of it now, I tried to give it a pause before
talking on the last pass. Sort of counterintuitive coming from the SSB
contesting world!

Thanks for all the recordings on your site. I had never really noticed that
I was losing the first part of my transmissions, even though I've been
operating full duplex.


- Matthew

On Fri, Sep 30, 2016 at 3:27 PM, John Papay <john at papays.com> wrote:

> Matt KK4FEM just tweeted about something
> that happens on SO-50 when you start talking
> before the satellite gets into the repeat mode.
> SO-50 is a CTCSS Squelch repeater.  You need
> 67Hz tone to make it repeat your signal.  The
> satellite must decode your signal before it will
> turn on the transitter.  If you start talking
> immediately, the first letter or two of your
>  callsign will not be heard.  If you are not
> known, others may get your callsign wrong.  Those
> that are full duplex have the advantage of hearing
> what gets transmitted.  Those that are not, don't
> realize what is happening.
> So just key up and pause a half-second before giving
> your callsign. You will have much better results.
> This does not apply to FM satellites like AO-85 which
> are constantly transmitting once activated.
> 73,
> John K8YSE
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