• APRS Over Satellites
  • Successful listening with gqrx and the built-in AFSK1200 decoder
  • Installing Xastir to set up an APRS iGate
    • http://xastir.org/index.php/Homebrew
    • Use via command line after running XQuartz with xastir &
    • Still need to do some configuration. Installation was done 2021-06-06
      • Xastir with RTLSDR
        • Need to use multimon-ng with rtl_fm and socat
          • rtl_fm -f 144390000 -s 22050 -o 4 -g 100 - | multimon-ng -a AFSK1200 -A -t raw - | sed -u -r 's/^.{6}//' | socat -u STDIN TCP-LISTEN:14580,reuseaddr,fork
            • Then Xastir needs to have connect to an internet server with localhost:14580
            • I set this to an alias start_aprs
        • Configuration
          • Run callpass to generate
          • Station
            • GPS, comments
          • Defaults
            • Enable RF->Inet OR 2-way
          • Interface
            • Internet for APRS Tier 2 server interface (along with radio interface if want to function as igate)
              • This should be allowed to transmit
              • Password from callpass goes here
  • To use Xastir with SDR
    • Run start_aprs alias
    • Launch XQuartz
    • From the terminal that pops up, run xastir &
  • How to pass messages to internet?
    • Set up password by running callpass <callsign> to send and receive, add that to Tier 2 server interface config
    • I added another internet interface and pointed it to one of the Tier 2 APRS servers. I haven’t seen anything on APRS.fi yet though.
      • Enable RF->Inet OR 2-way also needed. Verified on aprs.fi
  • Thinking about getting a Baofeng UV-5R for cheap APRS operation
    • Got it
  • Get Started with APRS with RTLSDR and Xastir on Mac Hub Page

Other Modes#

FT-8