Decoding digital signal from ISS

Discussion in 'Satellite and Space Communications' started by WM5TS, Nov 12, 2018.

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  1. WM5TS

    WM5TS XML Subscriber QRZ Page

    Is the digital signal from the ISS an APRS signal? I tried to decode it last night but with no luck.

  2. K3RLD

    K3RLD Ham Member QRZ Page

    The signal on 145.825 is indeed APRS (1200 AX.25). The Kenwood radios with built-in TNCs can decode, or you could also feed audio to software such as APRSDroid or Direwolf.
    WD9EWK likes this.
  3. WM5TS

    WM5TS XML Subscriber QRZ Page

    Thanks for the info. I tried to download direwolf but could not find the install program. I can hear the packets being received but PinPoint will will not decode the data.
  4. K3RLD

    K3RLD Ham Member QRZ Page

    What operating system are you using (Mac, Linux, Windows)?
  5. W5PFG

    W5PFG Ham Member QRZ Page

    WD9EWK likes this.
  6. KB1PVH

    KB1PVH Ham Member QRZ Page

    There's no install. Look for direwolf.exe in the unzipped folder. You'll also need to edit direwolf.conf.
    WD9EWK likes this.
  7. K3RLD

    K3RLD Ham Member QRZ Page

    Also, consider giving GQRX a try. It has a built in AX-25 decoder that works pretty decently, too.
    WM5TS and KM6LYW like this.

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