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RE: [ScoutRadio] VHF/UHF at the Summit and APRS (DTMF)

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  • Robert Bruninga
    ... announced: Repeater Input Output Tone 2 m Analog 146.100 MHz 146.700 MHz 123.0 Hz 70 cm Analog 449.025 MHz 444.025 MHz 123.0 Hz
    Message 1 of 1 , May 21, 2013
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      > the [Jamboree] Summit's analog and D-Star repeater frequencies were
      announced:

      Repeater Input Output Tone
      2 m Analog 146.100 MHz 146.700 MHz 123.0 Hz
      70 cm Analog 449.025 MHz 444.025 MHz 123.0 Hz
      70 cm D-Star 446.8125 MHz 441.8125 MHz

      Also add 144.39 CTCSS-100 for APRS Voice Alert (voice contact to any APRS
      user)
      And 146.58 for APRS DTMF

      This latter capability on 146.58 simplex allows anyone with any HT to
      place themselves anywhere on the Jamboree map using only 2 digits of X and
      2 digits of Y transmitted as a 4 digit DTMF number. Just send the number,
      then your callsign from DTMF memory and you will hear a CW "R" rogering
      your input and they you will appear on the APRS system just like all the
      APRS users.

      This system is called APRStt (for Touchtone) and was also demonstrated at
      Dayton and hope to make it a part of the APRS demo at the K2BSA tent. It
      is helpful if you preprogram your callsign into your DTMF memory ahead of
      time since you only need to do that once.

      See http://aprs.org/aprstt.html and follow the link to the callsign
      generator and to the Jamboree APRStt page.

      Bob, WB4APR
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