I haven't been able to find any information on antenna spacing on any of the
GPS mfr's or antenna mfr's web sites. Maybe I just don't know the correct
search terms.
Can anyone point me to a source for that kind of data?
There's a LOT of information about GPS, GPSDO and antennas on the web, and
I'll admit that I haven't read it all, but there's just not enough time in a
day, and my eyes can't stand the strain to read everything.
Point me in the right direction and I'll take it from there.
Thanks!!
Dave M
Bob Camp wrote:
Hi
You might want to check the spacing spec’s on the antennas you have.
Some of them have fairly large spacing recommendations (like > 10
feet).
Bob
On Oct 6, 2014, at 4:01 PM, Dave M <[email protected]> wrote:
Does anyone in the group have, or can point me to, a low-cost (but
not cheap) 2-port splitter for a GPS antenna? Those on Ebay are
rather expensive.
I have two GPSDO units, and have both an older timing antenna and a
new choke ring antenna (Thanks, Pete L). I already have one 2-port
splitter (working well), but my intent is to connect both antennas
through the splitters and a couple coaxial relays so that I can,
with the twist of a switch, allow me to run each GPS from a
different antenna, or both from the same antenna. I would like to
gather some data as to the differences between the two antennas. I
know I could switch the connections manually, but I like the idea of
a switch to sort of automate the connections, and I'd need another
splitter anyway.
Before I go to the trouble and expense of building upon this idea,
are there any comments as to the value of the project?
Some questions come to mind:
I'm thinking about mounting both antennas on the same mast, at the
same elevation, just separated by a couple feet. Any problems that
I should be aware of by putting both antennas so close together?
Will that small distance have a noticeable effect when switching a
receiver from one antenna to the other? Will the GPS notice the
difference and want to do another survey?
Thanks for your comments.
Dave M
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