Sunday, January 23, 2011

APRS Messenger v2.98

I've just uploaded APRS Messenger v2.98 to the webpage:

This version now has a remote control feature to allow the APRS over HF digimodes and VHF TNC transmit functions to be enabled or disabled by an APRS message.

In the initial set-up screen you can enter the callsign and SSID of the remote control station. You can also enter the remote control messages to stop and start the igate transmit function. The defaults are "Igate transmit ON" and "Igate transmit OFF" but these can be changed to any 18 character message.

Remote control messages can be set over VHF (if a TNC is used), APRS over HF digimodes or the APRS-IS. A confirmation message "Confirm igate transmit ON" or "Confirm igate transmit OFF" is sent out to the remote control station over the APRS-IS if connected. When transmit is disabled the program still functions as a receive only Igate.

On HF digimodes the sound card transmit is enabled or disabled. Using a VHF TNC the comm port RTS output is enabled or disabled to control the TNC.

This is useful in countries where closedown arrangements have to be made for unattended use or where APRS igate operators would like a remote control facility when away from home.


Chris, G4HYG

Chris Moulding
Cross Country Wireless Ltd

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