2 GPS sharing an antenna

frilaens

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Is there an easy way to share an antenna? My technical contacts have given me conflicting advice.

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charles_reed

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Understandably

because, for most installations, the so-called aerial is the GPS receiver and the GPS box is only there to produce the read-outs.

You can, theoretically, feed 2 boxes from 1 receiver, using NMEA, providing the two boxes will work on the attenuated signal.

On the whole I'd avoid trying it.

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AndrewJ

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the problem would be the attenuation and the cable connecting the two GPS. I imagine you could splice the cable, however you could get a low loss splitter which would give you two outputs from one input. I assume both the GPS are the same as some antennas have an amplifier and filters in the antenna housing itself which might not be compatible with a different make/model of GPS receiver.
I'd be interested in your results if you try it. (I would think a TV cable splitter would work, assuming the connectors the compatible with the GPS cable)

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