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November 13, 2012 APRS in Emergency Communications

November 13, 2012 APRS in Emergency Communications. Benefits of APRS: 1) Single-view, location-based data. 2) Message broadcasting. 3) Automatic logging of received messages. 4) Integration with other services. 5) Already built in to many mobile and handheld transceivers.

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November 13, 2012 APRS in Emergency Communications

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  1. November 13, 2012 APRS in Emergency Communications

  2. Benefits of APRS: 1) Single-view, location-based data. 2) Message broadcasting. 3) Automatic logging of received messages. 4) Integration with other services. 5) Already built in to many mobile and handheld transceivers.

  3. APRS is generally used in two ways: Broadcast Peer to peer

  4. APRS Clients: Windows: UI-View (http://www.ui-view.org) (http://www.apritch.myby.co.uk/ uiv32.htm) APRS-ISCE (http://aprsisce.wikidot.com) Mac, Linux: XASTIR (http://xastir.org) iPhone (App Store): iBCNU PocketPacket

  5. Digipeter: A station that retransmits received packets after a brief time delay. This can be done either by settings in the TNC, or in the software.

  6. Linux and Mac can both use X-Windows based programs, like xastir. http://www.xastir.org/wiki/ Main_Page

  7. As root, chgrp users /dev/ttyS* Or, chmod 666 /dev/ttyS* Depending on your system, this may have to be done every reboot.

  8. Common SSIDs: 0 – base 1-4 – mobile/portable/tactical 7 – HT or hiker 10 – Internet gateways 12 – One-way tracker 13 – Weather station 15 – General use

  9. Send a message to: CQ, TEST, or a specific callsign CQSRVR – An APRS-IS enabled gateway can digipeat messages to a registered group of specific callsigns. Message text: CQ GROUPNAME Message

  10. Send a message to: CQSRVR CQ ?: List all active groups on this server. CQ ? GROUPNAME: Get a message back with the member count. CQ L: List all groups I am a member of.

  11. Send a message to: EMAIL: forwards a 67-char message (including address) to the internet. Message text: email@address.org Message

  12. Send a message to: WLNK-1: Use APRSLink via an enabled gateway. http://www.winlink.org/aprslink Message Text: SP email@address.org Subject Keep sending your message 1 line at a time. End with /EX by itself.

  13. Send a message to: WLNK-1: Use APRSLink via an enabled gateway. Message Text: SMS email@address.org Message One line message

  14. Send a message to: WLNK-1: Use APRSLink via an enabled gateway. Message Text: L Get a list of 5 messages pending. R1 Read message #1.

  15. APRS has even more potential than we’ve discussed tonight. Bulletins relevant to large groups can be broadcast at regular intervals. Status reports from multiple sites can be delivered at once and kept available for a period of time.

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