[aprssig] Hang Glider APRS
jdw at eng.uah.edu
Tue Apr 18 16:01:37 CDT 2006
On Apr 18, 2006, at 3:35 PM, Andrew Rich wrote:
> In contact with the local hang glider club. One guy is going to fly
> 100 Km's cross country.
> Now I have to make the decision wether the pocket tracker will make
> the distance.
> I measured it with a comms test set - 168 mW.
> Anyone had expereince with RF vs Distance from airborne objects ?
You're generally good until the planet gets in the way. (:
I've listened to a 40mW beacon and decoded packets from a 350mW tracker
from 300 miles away, using a D7 and an arrow handheld yagi. The
transmitters were in a high altitude balloon.
168mW is a bit weak, but their advertising for that unit claims it does
better than the power level would lead you to believe. I have no
personal experience with the device.
If I had a bigger transmitter (say 500 mW) I'd use it, but if the
PocketTracker is all you've got, fly it and see.
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