Burbank CDV
APRS Introduction
An introduction to APRS.
By David Fleming -- KG6SQU
What is APRS
APRS stands for Automatic Packet Reporting System. It might be easier to think of it as Automatic Position Reporting System though because it uses a transmitter to send GPS positional data at specific intervals over a amateur radio frequency. This data can be received by an APRS equipped amateur radio setup to see the position of the transmitter on a map. This map position can also be tracked on the internet.
The Value of APRS
Why would the BEARS want to have APRS capability? APRS is extremely useful for tracking purposes. Those that carry an APRS transmitter setup can be tracked by a monitoring station. The IC or incident commander (or communications officier) is able to to know precisely where those "in the field" are. This is particularly useful for "search and rescue" groups and for those participating in ARSON watch. The individual "in the field", rather than calling in and trying to describe location, can be seen on a map. This frees up the indivual to talk about issues rather than describing position. It also allows the IC to take note of what areas are NOT being covered and assign someone to that area.
A simple APRS transmitter only requires a GPS unit, a TNC, and a radio (and some radio have a built in TNC so an external one is unneccesary). A simple monitoring system only requires a receiver, a TNC, a computer, some APRS software (that is inexpemsive), and some mapping software (that is also inexpensive).
What is the BEARS' capability now
- Some level of expertise in operating APRS for use in tracking two Arson Watch vehicles for the 4th of July Event at the Starlight Bowl (2004, 2005)
- Two BEARS transmitter units built into sturdy Pelican cases (that can also monitor with an attached computer)
- Several other transmitter units owned by other individuals in the BEARS (including myself)
- A TNC, radio, and antenna set up for APRS monitoring at the EOC
- A computer allocated to APRS
- Delorme Street Atlas USA, version 9
What do the BEARS still need to do
- There needs to be some level of training on using APRS
- More APRS systems need to be set up either by the BEARS or individuals, or a combination of these two
- The BEARS need to practice using APRS for real life situations
- There needs to be some level of training on using APRS for more advanced applications such as sending short e-mails, messaging between call signs, setting up an HF interface, etc.
Setting up an APRS System - Part 1
APRS+SA, and Delorme Street Atlas
UI-View
APRS+SA Help File (author unknown)
The CDV APRS Plan ... not written yet
David Fleming is the BEARS' contact for issues relating to APRS!
For more APRS information and/or help contact David Fleming at the following e-mail: BEARS-APRS@BurbankCDV.org
