[time-nuts] GPS active antenna delay ?
Hal Murray
hmurray at megapathdsl.net
Sun Feb 8 20:06:18 UTC 2015
jra at febo.com said:
> OK, so I had an HP 58535A two-port GPS splitter handy and put it on the
> VNA. It clearly has a filter of some sort, as shown by the S21 frequency
> response. The delay at the center of the passband is about 21ns, and it
> increases to about 26ns at the edges.
Thanks.
It seems a bit strange that HP didn't mention the delay. That part seems
likely to be used with their GPS gear that is setup to compensate for cable
delays.
--
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