50 ohm / 75 ohm question is really irrelevant in this kind of thing. Trmble itself says in manual, not to be concerned with this apparent mismatch. In my particular case, I have a home lab standard and existing system. I have an antenna and network of distribution amplifiers. They are all 50 ohms and N connectors. Some ports have BNC adapters attached. I have pretty much standardized everything to SMA, N, or BNC.
I boxed a power supply, T-bolt, and buffer amp in a metal case. I bought a short cable (RG58) that goes from F to BNC. On back of the case, I have BNC to N adapter. I also have a few adapters that goes from F to BNC for the test bench. It really doesn't matter what you use, as long as it makes a solid connection. Advantage of F connectors and RG6 are, cheap, abundant, and low loss for the size. Advantage of having house standard is, less adapters and less headache..... --------------------------------------- (Mr.) Taka Kamiya KB4EMF / ex JF2DKG On Friday, June 5, 2020, 7:22:33 PM EDT, Robert DiRosario <ka3...@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 _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.