[amsat-bb] APRS Satellite PATHs

[Fred Hillhouse]

Regardless of the other operational requirements of FalconSAT-3, you are saying FalconSAT-3 will not digipeat using the generic paths. That means the text in the links provided is incorrect. Or is there some other qualifier I have missed?

PSAT2 is also a different beast apparently. The text in the link imply APRS uplinks are narrowband. From the PSAT2 link:

Uplinks: 145.825 MHz narroband [sic] FM packet and 29.4815 MHz SSB PSK31
User Station Software Configuration: 
First bullet - Radios must be in Narrowband and track to 1 KHz Doppler on the uplink.

The reason for asking is to be able to make as few changes to an HT (D72) as possible. And the main use is to achieve a digipeat. When a satellite is the only APRS network available it could be a useful way to get information out.

Best regards,
Fred N7FMH


-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces at amsat.org] On Behalf Of Ryan Noguchi via AMSAT-BB
Sent: Wednesday, July 10, 2019 12:11 PM
To: amsat-bb at amsat.org
Subject: Re: [amsat-bb] APRS Satellite PATHs

 FalconSat-3 is a different beast: 9600 bps vs. 1200 bps, and crossband at different frequencies than the 1200 bps packet satellites. If you want to be digipeated by FalconSat-3, you need to use the PFS3-1 PATH. 

73, Ryan AI6DO


    On Wednesday, July 10, 2019, 6:53:47 AM PDT, Fred Hillhouse via AMSAT-BB <amsat-bb at amsat.org> wrote:  
 
 Greetings,

According to http://www.aprs.org/iss-faq.html
WHAT PATH DO I USE?
All APRS satellites and the ISS support the generic paths of ARISS or
APRSAT. Since all of these satellites supports the same generic paths (when
properly configured), this means you can operate either ISS or PCsat or PSAT
without reconfiguring your TNC! Just set your UNPROTO path to APRS VIA ARISS
and it should work with all APRS birds.

And: http://aprs.org/psat2.html
Sister APRS Satellites: Other APRS transponder satellites on orbit or in
work all share a common uplink, a generic digipeter alias (APRSAT and ARISS)
and a common downlink (145.825 MHz) so all user traffic appears on the live
APRS satellite downlink page and ISS downlink page. The graphic below shows
how the commonality of all this operaation integrates together with
worldwide users and the internet linked ground stations.

Are these statements really true?
If so, why would I consider using the PATH of PFS3-1 for FalconSAT-3 or
RS0ISS for ISS?

Thank you!

Best regards,
Fred N7FMH

  
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