[time-nuts] WTB: GPS Antenna Splitter

Dave M dgminala at mediacombb.net
Wed Oct 15 19:43:43 EDT 2014

Pete, I see a ZAPD-30 on the miniCircuits web site.  Might those be the 
models that you have?
If so, (and assuming that you can find them), how much for a couple?

Dave M

Peter Loron wrote:
> 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.
> -Pete
> 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

More information about the time-nuts mailing list