[amsat-bb] ISS Crossband Repeater - 9k6 APRS?

[Jean Marc Momple]

Mark,

I also noticed the data stream on the waterfall but when tried to decode it ISS was already too low elevation. Therefore will leave the modem permanently on and forward whatever received to Satnogs and also feedback on the BB.

73


Jean Marc (3B8DU)

> On Sep 4, 2020, at 8:28 AM, Mark Jessop via AMSAT-BB <amsat-bb at amsat.org> wrote:
> 
> After noticing that a SatNOGS station (through a fluke of configuration)
> had decoded a packet [1] on the new repeater downlink frequency, I
> investigated a bit more and found that all the passes observed recently had
> 9k6 FSK packet traffic on the downlink.
> 
> An example packet:
> [0.4] NA1SS>0P0PS4,APRSAT:'v&<0x1c>l <0x1c>SI]ARISS-ISS PM2=<0x0d>
> ------
> U frame UI: p/f=0, No layer 3 protocol implemented., length = 48
> dest    0P0PS4  0 c/r=0 res=3 last=0
> source  NA1SS   0 c/r=1 res=3 last=0
> digi 1  APRSAT  0   h=0 res=3 last=1
>  000:  60 a0 60 a0 a6 68 60 9c 82 62 a6 a6 40 e0 82 a0  `.`..h`..b.. at ...
>  010:  a4 a6 82 a8 61 03 f0 27 76 26 1c 6c 20 1c 53 49  ....a..'v&.l .SI
>  020:  5d 41 52 49 53 53 2d 49 53 53 20 50 4d 32 3d 0d  ]ARISS-ISS PM2=.
> ------
> Is this being generated within the new Kenwood radio, or somewhere else?
> What does the packet contain? (It looks like there might be some telemetry
> in there?)
> 
> 73
> Mark VK5QI
> 
> [1] https://network.satnogs.org/observations/2780486/
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