[time-nuts] Oncore, Trimble Antennae

Tom Van Baak tvb at LeapSecond.com
Wed Oct 22 03:04:23 UTC 2008

> Both the Trimble and Motorola modules use active antennae with 5V power 
> - what I don't know is whether they are the same polarity.

> all my trimbles and oncores have +5 on center, ground on shield...

I'd be interested to know if any antennas are in fact the other
way around. Never even considered that.

Now if GPS antennas just worked like DC motors, then maybe
a wrong polarity would make your altitude come out negative
or perhaps time would even count backwards...  ;-)


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