Tom,
John A and I had a short antenna email earlier today, mostly about the fact
that both of the GPS antennas we were using died.
I asked a question about certain "commercial" antennas which included the
Timing 2000, HP 58532A and the Datum 2640NW/DE, as to wether there were any
opinions as to which is the better timing antenna. Neither of us has much
of an idea, do you have any thoughts?
Had
It depends very much on the application. Sometimes
evaluations include things like weight, size, power
requirements, acquisition time, price, TRAIM quality,
temperature coefficient, etc. But plain 1PPS is a good
start since it is the key feature that distinguishes a
GPS timing receiver from a normal GPS receiver.
Then there are a host of issues with evaluating
antennas, which although not part of the GPS
receiver, can be important to the quality of the
1PPS you are measuring.
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