[time-nuts] Do reflections up/down the antenna cable cause a problem with GPS?
phk at phk.freebsd.dk
Mon Nov 21 13:36:09 EST 2016
In message <CANX10hAs4q4=i4F1dO_a5u4_9bEp89v+yjX_zFLtc9bLgwAujQ at mail.gmail.com>, "Dr. David Kirkby (Kirkby Microwave Ltd)" writes:
>Whilst the input impedance of the antenna input terminal on a GPS receiver
>is probably marked 50 Ohms, I'd be somewhat surprised if it was very close
>to 50 Ohms. Antenna cables have an impedance, which is typically 50 +/- 2
>Ohms, but this varies, not only between different makes/models of cables,
I think the installation manual for Trimbles timing products say you
can use either 75 or 50 Ohm cable...
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