 SmokChsrWho let the magic smoke out?Premium
join:2006-03-17
Saint Augustine, FL
 ·Clearwire Wireless
| APRS on the ISS.. I had been noticing data bursts from time to time on the ISS frequency. Initially I thought it was just some bleed over. Then today I heard it when I was taking field intensity measurements way out in the middle of nowhere with that, it finally hit me that this was on freq. Even with that it still took a while for it to sink in that this might actually be coming from the ISS. I checked the orbit times and waited and sure enough as soon as the ISS came in range I started hearing the APRS farts, and 10 minutes later they faded away. Since I heard this on 2 separate passes, I think I can confirm that the ISS is operating a digipeter, and it seems to passing ground traffic. My portable wasn't receiving it well but did decode a few. What I don't know is if it's using the Voice or Data uplink frequency to feed it. I fired 2 bursts, and heard a response each time but the portable did not receive well enough to confirm that it was a response to my burst.
So if you like playing with APRS you may want to give it a try, you never know how long they will leave it set up and running. |
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 alphapointeDon't Touch MePremium,MVM
join:2002-02-10
Columbia, MO
kudos:2 | Was this on 144.39? I'll have to try to catch it with the satellite beam antenna... |
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JJVPremium
join:2001-04-25
Seattle, WA | reply to SmokChsr
I haven't tried it but Google pulls up lots of info.
»archive.k6ya.org/docs/aprs_via_iss.pdf |
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 drjimPremium,MVM
join:2000-06-13
Long Beach, CA
kudos:3
 ·Verizon FiOS
| reply to alphapointe
144.39 is the nationwide APRS frequency. The ISS never transmits there. They use 145.825 for their digipeater.
I've bounced packets through them using my TH-D7 and a whip antenna.
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One man's Magic is another man's Engineering. |
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 GeekNJPremium
join:2000-09-23
Waldwick, NJ | reply to SmokChsr
Here's some info on when I did APRS through the ISS - »www.k2dsl.com/2010/09/19/first-i···ia-aprs/
Here's some info with a voice contact I made with the ISS with Doug Wheelock - »www.k2dsl.com/2010/09/19/first-v···station/ . Was very lucky to meet Col Wheelock in Dayton this year. Terrific gentleman!
Doug Wheelock
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Tweaked your connection? | Mail Parse | Speed Converter |
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drjimPremium,MVM
join:2000-06-13
Long Beach, CA
kudos:3 | SWEET! |
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SmokChsrWho let the magic smoke out?Premium
join:2006-03-17
Saint Augustine, FL Reviews:
·Clearwire Wireless
| reply to SmokChsr
This that I heard wasn't on 145.825 as would be expected, I was hearing it on 145.800 Someone may have left the radio in the wrong mode.. who knows.
I'm going to set up my APRS radio so I can send on 144.825, 144.800 and 144.490 and see if I can figure out what it's doing, provided it's still operating. |
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SmokChsrWho let the magic smoke out?Premium
join:2006-03-17
Saint Augustine, FL | reply to SmokChsr
FWIW, I haven't hear another data burst on the voice freq since I started this thread. Guess they figured it out. |
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