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Getting Started in APRS

Getting Started in APRS. WCARES University April 12, 2014. What is APRS?. Automatic Packet Reporting System Amateur radio based, real time tactical communications for the local area Developed in 1982 to map HF Navy position reports.

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Getting Started in APRS

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  1. Getting Started in APRS WCARES University April 12, 2014

  2. What is APRS? • Automatic Packet Reporting System • Amateur radio based, real time tactical communications for the local area • Developed in 1982 to map HF Navy position reports APRS is a registered trademark of Bob Bruninga, WB4APR

  3. Capabilities • See who is in range • Track an operator’s position • Find out repeater frequencies, tones, and net times in a new city • Check and send messages in Winlink • Send text messages via RF and the Internet • Display weather alerts • Share bearings and signal strengths for DF • Identify gaps in Search and Rescue operations

  4. Limitations • Packet collisions and finite bandwidth • No error correction • Packet delivery not guaranteed • Some objects aren’t “listening” • Reliability decreases with 60-120 users

  5. Why APRS? • Supplement voice channels during emergencies or special events • Friends and family can find you when their phones are down • Ever pass an antenna strewn vehicle and wonder how you can talk to them? • It’s a great way to learn about VHF propagation*

  6. How Does in Work?

  7. Scenario 1 – New In Town “144.50 PL 123.0 Net Tue 7PM”

  8. Scenario 1 – New In Town “144.50 PL 123.0 Net Tue 7PM”

  9. Scenario 1 – New In Town With the APRS-IS tie-in, you can identify ham assets in advance of your trip.

  10. Scenario 2 – K7DCC Monitoring “K7DCC-9: Monitoring 146.20”

  11. Scenario 2 – K7DCC Monitoring “K7DCC-9: Monitoring 146.20”

  12. Scenario 2 – K7DCC Monitoring “K7DCC,this is KK4LNO…”

  13. Scenario 3 – Text Message TO: K7DCC

  14. Scenario 3 – Text Message TO: K7DCC

  15. Scenario 4 – Fox Hunt

  16. Scenario 4 – Fox Hunt “180 degrees” “80 degrees, low strength” “300 degrees” “45 degrees”

  17. Scenario 4 – Fox Hunt “180 degrees” “80 degrees, low strength” “300 degrees” “45 degrees”

  18. Scenario 4 – Fox Hunt “180 degrees” “80 degrees, low strength” “300 degrees” “45 degrees”

  19. How Do I Get Started? Cost Capabilities Checkout the WCARES.org APRS Special Interests Section

  20. Hardwired Cell *

  21. Bluetooth TNC Adapter *

  22. * The Difference the Antenna Makes The same HT hooked up to a VHF antenna outside the vehicle. 4W HT Sitting in the Passenger Seat

  23. Mapping/Tracking Programs I Can Recommend • APRSISCE/32 • APRSDroid • Xastir

  24. APRSISCE/32

  25. APRSDroid

  26. Virtual TNCs • Dire Wolf • AGWPE

  27. APRS.fi

  28. Deadspots – We Need Your Help

  29. For More Information • Mobilinkd.com • WCARES.org • APRS.org • APRS Beginner’s Guide http://k9dci.home.comcast.net/ • An example of regional coordination http://www.nwaprs.info/

  30. Questions?

  31. Extra Credit • Voice Alert • Frequency Agile Operation • Send a short email through Winlink WLNK-1 SMS sam@iam.com A short message to Sam

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