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[aprssig] flying digipeater?

Robert Bruninga bruninga at usna.edu
Tue Apr 19 16:04:59 UTC 2005

>>> ve7gdh at rac.ca 4/18/05 8:25:02 PM >>>
>For SAR, from time to time there are operations where a 
>plane just keeps circling a mountainous area with a 
>repeater onboard for voice communication. ...could...
> have an APRS digipeater onboard as well...

Yes, that recommendation, to put APRS digipeaters on all
SAR aircraft is an excellent plan.  The digis should be
set to listen on 144.99 and TX on 144.39.  This way they
can hear any SAR member with a small pocket tracker
because they do not compete with the tons of  other QRM
that is on 144.39.  Also the plane's digipeaters dont
respond to other terrestrial packets either, thus operating
transparently to the normal use of the frequency..


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