The loop length is figured very close it's actual length due to the fact that the velocity factor of the loop is very fast (close to 98%) because of the air dielectric, unlike cable that is much slower. Steve / K6SCA
--- On Mon, 9/15/08, Chuck Kelsey <[EMAIL PROTECTED]> wrote: From: Chuck Kelsey <[EMAIL PROTECTED]> Subject: Re: [Repeater-Builder] Cavity interconnection cable length To: [email protected] Date: Monday, September 15, 2008, 8:47 AM Trial and error or contact the manufacturer. Chuck WB2EDV ----- Original Message ----- From: "kb9bpf" <[EMAIL PROTECTED] com> To: <Repeater-Builder@ yahoogroups. com> Sent: Sunday, September 14, 2008 5:54 PM Subject: [Repeater-Builder] Cavity interconnection cable length > Hello, > > Many writings about the optimum length of cavity interconnecting cables > mention that the length of the coupling loops needs to be taken into > account, but they don't get any more specific. > > Does that mean the length of the conductor in the loop (circumference > if it were round) or connector-to- end length (diameter if it were > round) or something else? > > I find it pretty easy to get the cables cut to a pretty precise > electrical 1/4 wavelength but this loop length thing leaves me guessing. > > 73 > Brad KB9BPF >
