Fat fingers. Replace "test" with "rest". < snip > And it's not clear that there's actually "loss" due to mismatch. Most antennas/preamps/receivers don't have exactly 50 ohm impedances. 75/50 is only 1.5:1, and there's an awful lot of antennas and receivers out there that only claim 2:1 VSWR. The usual spec for the antenna is 1.5:1, so for all you know the Antenna and Receiver is already 75 ohms, and RG6 will give you a better match than 50 ohm LMR400. < snip >
An excellent point. A similar issue is the connectors. If you read the data sheets for many common connectors and adapters you'll find that a lot of them are only rated for a 1.2:1 VSWR. I ran into this issue a few years ago when trying to measure reflection coefficient in a system using TNC connectors. It turned out that the connectors set the VSWR limit, not the test of the measuring system. -John _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
