Hi

On Jul 17, 2016, at 2:35 AM, David J Taylor <[email protected]> wrote: Why is the noise figure so high on these antennas (2.5 dB)? Is that some pre-filtering, perhaps?

They are designed as timing antennas. That normally puts them in a “lots of RF” environment. (like a cell tower). They should have some filtering in front of the preamp and a preamp that is fairly good for IMD. There has always been a lot of debate about this or that one *actually* having
improved performance in these respects.

Bob
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That makes sense.  Thanks, Bob.

David
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