[time-nuts] Component level 1:2 splitter

Stan, W1LE stanw1le at verizon.net
Mon Mar 10 19:25:34 EDT 2008


Hello Randy,

You may find that you have excess gain from the existing LNA/Antenna to 
the GPS RX.
Using a passive splitter, 1/2 to both outputs, will not degrade performance.

If you do not have excess gain, a cost effective approach is a ebay 
splitter by Symmetricom.
Last one I got was 30$

Stan, W1LE  FN41sr   Cape Cod



randy warner wrote:
> Guys,
>
> I need to come up with a 0db little splitter to route 1 antenna into 2 GPS
> receivers. To keep the isolation up I want to use an active splitter instead
> of a passive one. I suppose I could use a passive splitter followed by two
> LNA's (one to each receiver), but I would then have to add a lot of
> attenuation to knock the signal back down. I suppose it would work, but the
> noise factor sure wouldn't be optimum.
>
> Does anyone out there know of a single/dual IC solution to this? Everything
> I have found LNA wise is in the 10-30 dB range. Note that this will be a
> board mounted circuit and I don't have to worry about connectors, etc. I'm
> hoping to find a little solution that I can cover with one of Laird's
> standard shield cans.
>
> Thanks,
>
> Randy Warner
>
>
>
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