1 in at 144 MHz is approx a 5% change and will affect slightly the RL esp if the source impedance isn't 50 Ohms J0. The overall electrical length technically is that of the coax at its VF plus the length of the loop (in air). Adding an elbow can make a difference at this freq. W6 MTF
--- In [email protected], Larry Horlick <llhorl...@...> wrote: > > The freq in question is 166 mHz. One chart gives me 19" and the other 18". I > didn't think 1" at this > freq would make much difference. I'm also not clear if the length is after > the connectors are installed or the cut cable before installing the > connectors. Which do you think it is? > > > > On Mon, Apr 19, 2010 at 8:42 PM, <n...@...> wrote: > > > > > > > At 4/19/2010 17:24, you wrote: > > > > >These are measured values using a Service Monitor. I have two charts that > > >show the cable lengths, but the values are not the same. They differ by 1" > > > > >for the same frequency. Would that produce the effect I'm seeing? > > > > Depends on what frequency band we're talking about. 1" is not enough @ 2 > > meters to make a significant change. Try changing the length by about a > > foot for 2 meters, or 4" @ 440. > > > > Bob NO6B > > > > > > >
