[time-nuts] Antenna return loss

[Andy Talbot]

Much talk about source return loss and splitters.
All active GPS antennas I've met have masses of gain at the top end, 40dB
or more.   Most of the small puck ones come with several metres of RG174
thin coax.

This is so lossy at 1.6GHz that that several metres may have perhaps 10 -
15dB loss.   So there's your good source impedance for the splitter 20 -
30dB RLoss without even considering the head amp itself.

Even several metres of UR43 should have enough loss to constitute a decent
match.

Andy
www.g4jnt.com