[time-nuts] Req: Decent GPS AntennaActive/Passive Recommendation

[David J Taylor]

From: Bob Camp

Hi

All of the ones I've opened up or seen dis-assembled have had the ceramic 
plate antennas in them. That very much surprised me early on, since I 
*assumed* they had something fancy inside based on their shape.

No argument about the filtering, I'm not sure if the temp-co of filter delay 
on an exposed antenna makes it a plus or a minus….

Bob
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.. and would the true time-nut add the delay through the filter to the delay 
in the feeder co-ax?  I suppose that means you could only buy an antenna 
with a stated, calibrated delay?  Limits the choice, a little!

Cheers,
David
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Email: david-taylor at blueyonder.co.uk