Hi Hal: The corner frequency is mainly becuase of the capactance at low frequencies. A transmission line at audio frequency looks like a shunt capacitor and the inductance no longer is working aginst it, so you don't get a real Zo but instaed capactance. Loss really does not come into it. In the RG-58 plot at: http://www.pacificsites.com/~brooke/Zo.shtml#RG58 the resistance is only 1.4 Ohms and is not a factor.
Have Fun, Brooke w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com Hal Murray wrote: >>acc. my understanding, the characteristic impedance of a transmission >>line (ideally losseless) is constant and waveform independant, >> >> > >The catch is we are discussing the non-lossless case. > >The corner frequency is where the losses become significant. > >I think there is another corner where the skin effect on the center conductor >kicks in. > > > > _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts