[amsat-bb] Turned the corner on AISAT-1 APRS digipeats

[KI7UNJ Tucker]

Yes, it can be done...

http://aprs.org/pcsat.html search for the word "double" on that page and
you will see some references to it being done

On Wed, Jul 3, 2019 at 8:51 PM Robert MacHale via AMSAT-BB <
amsat-bb at amsat.org> wrote:

> Random Though -- when two satellites are in range, can you bounce your
> APRS packet from Sat1 to Sat2 then finally to an iGate?
> KE6BLR>APRS,AISAT-1,ARISS:HELLO WORLD!
> Could this produce:
> KE6BLR>APRS,AISAT-1*,ARISS:HELLO WORLD!
> Then:
> KE6BLR>APRS,AISAT-1*,ARISS*:HELLO WORLD!
> Next:
> KE6BLR>APRS,AISAT-1*,ARISS*,qAR,N6DAN-1:HELLO WORLD!
> 73
> Robert MacHale. KE6BLR Ham Radio License.
> http://spaceCommunicator.club/igates
> . Supporting Boy Scout Merit Badges in Radio, Robotics, and Space
> Exploration
>
>
>     On Wednesday, July 3, 2019, 8:27:20 PM PDT, Scott via AMSAT-BB <
> amsat-bb at amsat.org> wrote:
>
>  Greetings!
>
> Being smart would be cool, but sometimes it's just easier to be lucky.
>
> Since the launch of AISAT-1, I have really struggled to get digipeated thru
> that satellite.  At best, I could get in a single digipeat but only at the
> exact moment of closest approach on a high pass.  Armed with seeing that
> repeatedly, I thought doppler tracking the 145.825 FM uplink might help,
> but it did not.
>
> So tonight (4-July UTC), by pure coincidence, there was a high pass of
> AISAT-1 immediately following a pass of PSAT-2.  Following Bob's (WB4APR)
> recommendation to use NARROW-FM on PSAT-2 (worked well), I thought "what
> the heck", I'll leave my radio set on NARROW-FM for the pass of AISAT-1 as
> well.  I'll even doppler track the AISAT-1 uplink while I'm at it.
>
> Boom.  Got digipeated left and right.  Well before and after closest
> approach, I got digipeated.  I didn't go crazy since I'm always so afraid
> of blocking out other people on a simplex satellite, but I hit it enough to
> see the night & day difference from what I'd been experiencing since
> deployment.
>
> If it's in the docs somewhere I missed it, but is sure seems to me that,
> like PSAT-2, AISAT-1 might very well be equipped with a NARROW-FM radio.
>
> It would be great to see if others find as much improvement as I did, so I
> hope some folks will try AISAT-1 using NARROW-FM on the 145.825 APRS
> digipeater.
>
> 73,
>
> -Scott,  K4KDR
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> _______________________________________________
> Sent via AMSAT-BB at 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!
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-- 


Casey Tucker  KI7UNJ
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