Eric Greenwell wrote:
Marc Ramsey wrote:
I know a few people who are experimenting with it, but repeaters are
few and far between where I fly. Here's what I'm planning on playing
with, but it starts to get expensive to update position more
frequently than every 15 minutes or so:

http://www.sensservice.com/proddetai...100-0149&cat=7


Every 15 minutes would still be useful. That would be, at worst, about a
40 mile diameter circle of "potential location" around the last
transmission of a flying glider. It might still transmit after a crash,
too. What kind of antenna does it need? Is that the antenna on the top
of the unit in the picture?

I believe it uses a separate patch antenna, similar in size to those
used by GPS receivers...

Marc