It depends on the connector.
N-male crimp connectors for RG214 and RG142/400 all add exactly 0.5 inches to
the length of the center conductor, so if you need a cable that has to be
exactly 12 inches from end-to-end using N-males (where the center pin does NOT
extend outside the barrel of the connector), you cut the coax to exactly 11
inches and add a connector at each end. Just don't cut the center conductor any
shorter and take care trimming and fitting the connector to it.
Other connectors vary, especially PL259s, where the center pin extends out
through the barrel of the connector.
I usually stuff a piece of stiff wire into the connector, note where it sits,
withdraw it, and measure how much gets inserted into the connector.
It has been my experience that no matter how carefully you measure and make a
cable, it will be the wrong length. I think this is one of Murphy's Laws.
Bob M.
======
--- On Mon, 9/8/08, Jeff Young <[EMAIL PROTECTED]> wrote:
> From: Jeff Young <[EMAIL PROTECTED]>
> Subject: [Repeater-Builder] Specfic Cable Lengths
> To: Repeater-Builder@yahoogroups.com
> Date: Monday, September 8, 2008, 7:35 PM
> Has anyone seen information on how to account for connector
> length when
> wanting to build a cable of a specific length (i.e. half
> wavelength)?
