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[aprssig] Beacon rate feedback

J T w0jrt at yahoo.com
Tue Nov 25 02:15:12 UTC 2008


I'm trying to come up with a scheme for the Tracker2 in particular 
that'll allow flexible but reasonably simple configuration of multiple 
paths, multiple rates, and multiple transmit frequencies for each packet 
type (position, weather, telemetry, status, etc).  Right now there's 
only limited control over what gets sent when.

One thing that would be nice to see when SmartBeaconing/corner pegging is used is a minimum time between packets with the default minimum of at least 30 seconds.  I see several people who end up drawing nearly perfect circles in a matter of seconds on maps as they go around a cloverleaf interchange, transmitting a nearly continuous stream of packets.  These are invariably SmartBeaconing/corner pegging trackers.  If a minimum time was placed between packets (and 30 seconds seems like a good default value for this) it would eliminate that type of network abuse but still provide the information that the user wanted to convey -- that is, that they made a turn and an indication of their new direction.  If someone really needs a perfect track of their vehicles path they should use an appropriate tool.  APRS is not designed to be that tool.

-Jerome, W0JRT




      
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