[email protected] said: > This sounds fast. The normal taxiometer is at 66% of speed of ligth in > vaccum, which for 1 ns is about 3 dm so for the RG-59 that would be > about 2 dm.
> Some cables reach 78%, but RG-58 and RG-59 is down at normal 66%. Sounds right. My rule to thumb for back-of-envelope work is that a signal in fiber and good (but not nutty) coax goes 1 km while light in air/vacuum goes 1 mile. In this context, "good" means foam rather than solid dielectric. Light goes 1 ft/ns in air or 5000 ns per mile or 5 usec/mile. In coax/fiber, that's 5 usec/km. -- These are my opinions, not necessarily my employer's. I hate spam. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
