[OT] Splitting PPS?
Hal Murray
hmurray at megapathdsl.net
Sat Dec 14 06:31:34 UTC 2019
> Does anyone have recommendations for GPS antenna RF-to-fiber converters or
> other ways to have the GPS antenna a long way (in a building) from the GPS
> receiver?
How far is "a long way"?
One approach is amplifiers and coax. The most cost effective coax is the good
cable TV stuff. RG-6, I think. It's 75 ohms rather than 50, but that loss is
minor relative to the length of the coax. You can get in-line amplifiers.
Plan B is to put the receiver out near the antenna and send the signals back
at low bandwidth. For anything past a short length you want differential
signaling.
I've been thinking of building a pair of boards using Ethernet cables. They
have 4 pairs. Transmit, Receive, PPS, and power. That's as far as the design
has gone.
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