[time-nuts] ThunderBolt question

[Kevin Rowett]

You will need a “GPS antenna” with an LNA in it for decent (perhaps at all) reception.

F connector is/was common for GPS antenna connections.  I doubt the receiver is anything close to 50 ohms, or 75 ohms

73, K6TD


> On Jun 5, 2020, at 4:24 PM, Robert DiRosario <ka3zyx at comcast.net> wrote:
> 
> I have a Trimble ThunderBolt GPSDO that I just received. It has an F connector for the antenna input, and BNC connectors for the 1 pps and 10 MHz outputs. Is the receiver input impedance really 75 Ohms, or is it 50 Ohms and they just used the F connector to distinguish it from the others? What do people do, just use a 50 Ohm antenna?
> 
> Thanks
> 
> Robert DiRosario
> 
> KA3ZYX
> 
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