On Dec 31, 2:30*pm, "Paul Remde" wrote:
Hi Brad,

I'm sorry, but I don't think that is possible.

It is possible to have a GPS send NMEA data to 2 soaring instruments or
PDAs. *But each GPS engine needs its own antenna. *I don't think a single
GPS antenna can be connected to 2 different GPS units - which is what I
think you are trying to do.

Good Soaring,

Paul Remde
Cumulus Soaring, Inc.

"Brad" wrote in message

...



I would like to use a GPS antenna that I could send NMEA data to both
my Glide Computer and my PDA running flight sortware.

Any thoughts on how something like that would be wired up?

I have a Gilsson antenna with a brass plug that fits into my iPAQ 310,
if that same unit would work, I would get another one, cut the plug
off and find the NMEA send wire, of course having the schematic would
help too.

Brad- Hide quoted text -

- Show quoted text -

Antenna feeds can be split to feed multiple GPS receivers, but it
often requires a splitter with a pre-amp*, and they're not cheap.
Additionally, signal strength from the splitter/pre-amp needs to be
tailored to the receiver. Not all GPS receivers are the same, and
overdriving the signal to a receiver can cause (at least) it not to
receive properly.
Antennas are cheap, it would be better to buy another one.
The NMEA sentences are the OUTPUT of the GPS receiver (though I don't
know if the 310 outputs them). The signal from the antenna is a very
low level psuedo-random-noise L band radio frequency signal.
* and all that I've worked with require an external power source.