scott at opentrac.org
Mon Aug 11 13:56:47 CDT 2008
> Also, with a Tracker2, the temperature sensor could be put at the bottom
> of the enclosure to measure water temperature and it could of course
> also include the supply voltage in the beacon.
And speaking of the Tracker2 and transceivers, the first samples of the
VHF transceiver modules are in! The integrated T2 board needs a couple
of tweaks, but the radios are looking good so far. They top out at
about 6.5 watts at 15 volts, and in testing with my HP 8920A I was able
to get a clean packet decode at least 10 dB lower than what I could get
on my Alinco DR-135T. Could be that my 135 is just deaf, though, so
I'll fire up the TM-271A when I get a chance.
If anyone has a good test setup for 9600 baud on 2 meters, I'd be happy
to loan out one of the units for testing. Unfortunately I've only got
two at the moment, and I can't spare both. I'd check it myself, but the
only 9600 baud TNCs I've got on hand are EJ-41Us and I don't have time
to try adapting them.
More information about the aprssig