[time-nuts] Delay through GPS antenna splitter/amplifier -- an answer, and a question

Tom Van Baak tvb at LeapSecond.com
Mon Mar 12 17:03:05 UTC 2007


>I had a chance recently to look at the performance of the two-port and 
> eight-port HP GPS antenna splitters on a super-duper network analyzer. 
> Screenshots of the results are at 
> http://www.febo.com/time-freq/pages/gps-splitter.

Super nice plots, John.
Tom Clark, do you have comments?

John, next time you can borrow that instrument blow
some hot/cool air on the antenna and see what changes
and by how much.

I've heard that the older GPS antennas, the ones with zero
or less RF filtering, were much better for timing applications
but have never seen data to prove it.

For example, do you have one of the old Motorola hockey
puck ones you could test? If not, I can send you a bunch
of different GPS antenna to try.

/tvb






More information about the Time-nuts_lists.febo.com mailing list