You may notice that this paper dates from 2012. The setup is the same but equipment changes aboard the ISS have occurred since then ...
... space activities using the strong and predictable downlink of the ISS.
The packet signal from the 5W Ericsson HT nowadays is considerably weaker than back in 2012 when a Kenwood rig was operational. I use the APRS terrestrial frequency on 144.390 for testing. I found it works on the terrestrial signals it will work on the ISS downlink. Also, here in Chicago area 144.390 is so full of signals that I receive something every 5 seconds at least.
The one gotcha with AGWPE or UZ7HO modem software is that these will only print a fully decoded packet (one with the checksum intact). On a hardware TNC you can set the PASSALL to ON and you will see all packets, even the one's with errors but your eye/brain connection can still read them.
The weak downlink from ISS packet means I will often hear a packet by ear but my UZ7HO and UISS combo will not decode/display. Hope this information saves some frustration in that your setup may be correct. See what you get on 144.390 for a confidence builder!
-- 73 de JoAnne K9JKM k9jkm@amsat.org AMSAT VP User Services
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of E.Mike McCardel Sent: Tuesday, February 24, 2015 8:35 AM To: Steve Kristoff Cc: amsat-bb@amsat.org Subject: Re: [amsat-bb] ISS packet
Steve,
Have you reviewed JoAnne Maenpaa's, K9JKM, paper that she wrote for Symposium a couple years back. The abstract reads: This article is aimed toward introducing new Amateur Radio Satellite operators to ARISS packet operations using radio equipment that they may already own. This is intended to be a guide to repurposing their terrestrial equipment for a start on space activities using the strong and predictable downlink of the ISS.
It can be found at: http://www.ariss.org/uploads/1/9/6/8/19681527/k9jkm_2012_symposium_ver2. pdf
73, EMike E. Michael McCardel, KC8YLD V.P. for Educational Relations, AMSAT-NA
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On Mon, Feb 23, 2015 at 5:30 PM, Steve Kristoff skristof@etczone.com wrote:
OK. Is there actually any way for an old man who only sort of knows computers to actually do packet on the ISS? I have tried MixW, UISS, AGWPE, UZ7?? soundmodem, and they all have me baffled.
I have MixW set up to do PSK31 and MMSSTV does a good job on the SSTV
from
ISS, so I'm not completely computer ignorant. Is there a user friendly packet program, that only requires one
download
and has an easy set-up?
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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://amsat.org/mailman/listinfo/amsat-bb