JoAnne,
You might take a look at the Direwolf software:
https://github.com/wb2osz/direwolf
It has a PASSALL command which works much like the hardware TNC version. I have lightly tested it, and it works fine with UISS. It also can give a lot of information about the RX signal. It is a bit more work to set up compared with Soundmodem because it uses a configuration file, but you also get more fine tuning.
73s,
Alan WA4SCA
<-----Original Message----- <From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of <JoAnne K9JKM <Sent: Saturday, April 15, 2017 21:43 PM <To: amsat-bb@amsat.org <Subject: Re: [amsat-bb] Thoughts on ISS packet switch back to 145.825 MHz <(long) < <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@amsat.org < <_______________________________________________ <Sent via AMSAT-BB@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! <Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb