[amsat-bb] Thoughts on ISS packet switch back to 145.825 MHz (long)

Stefan Wagener wageners at gmail.com
Sun Apr 16 02:54:35 UTC 2017

Thanks JoAnne,

Point well made! I am still trying to find out if this is possible with
sound modem or direwolf. At this point I might also go back to my trusted
TNC :-)


On Sat, Apr 15, 2017 at 9:42 PM, JoAnne K9JKM <k9jkm at comcast.net> wrote:

> Stefan mentioned ...
> > ...many stations are actually on the keyboard and they
> > answer, but I don't decode it on my system and they might not
> > either ... using UISS ...
> I'm also using UISS with the fields pre-loaded for quick, standardized
> answers given the short time of the pass. While it is quite convenient to
> load up some software for soundmodem and UISS vs. all the hardware cable
> connections to a standalone TNC - the shortcoming with the software
> approach is that you'll only decode and display packets that are 100%
> correct, with no single bit error, checksum matches perfectly. So our
> stations are often copying a good-sounding downlink signal but it just
> takes a single bit error and we're not seeing the other station's reply on
> the screen ... or they're missing our reply.
> For this reason I'm thinking of going back to my MFJ-1270C TNC when I have
> some time to wire it back up. In the TNC you can issue the PASSALL = ON
> command and you'll see all packets, even the incomplete or bad bit
> messages. In the past I saw enough of most messages that I could understand
> what was received.
> No unattended beacons at this shack - but the preloaded messages I have
> within UISS are usually the same on many passes.
> --
> 73 de JoAnne K9JKM
> k9jkm at amsat.org
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