[time-nuts] WTB: GPS Antenna Splitter

Peter Loron peterl at standingwave.org
Wed Oct 15 18:55:54 EDT 2014

Dave, I think I have a MiniCircuits ZAPD-3(?) splitter or two kicking 
around. I'll try to get a look in the stash this weekend.


On 2014-10-06 13:01, Dave M 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
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to 
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.

More information about the time-nuts mailing list