[TowerTalk] Measuring electrical length of coax...

[Dino Darling]

Hello John, how do you test your lines and what equipment do you use?

I've experimented with the MFJ 259B for stubs and phasing lines, but if it 
is critical, I'll order lines from M2.  I'd sure like a good method that I 
could employ myself.  Also, do you short the end of the coax or leave it 
open.  The MFJ book lists both methods.

>...but I even measure the actual phase shift for each delay line of solid 
>dielectric coax, if the application is critical.
>
>And with foam coax it is MANDATORY to TUNE (trim) each delay line to the 
>correct electrical length.
>
>--John  W0UN

Dino...k6rix at earthlink.net