[TowerTalk] Measuring electrical length of coax...

[W0UN -- John Brosnahan]

At 10:10 AM 7/14/2005, Dino Darling wrote:
>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.

I am spoiled ROTTEN!  In the old days I used an HP-8405A Vector Voltmeter.
But now I use an HP-4195 Spectrum/Network Analyzer.  I can cut a tenth inch
off and watch the null shift by a few KHz.  It makes it TOO easy.

There are lots of ways with Antenna Analyzers and Grid Dip Oscillators, but
once you have the expensive gear you won't go back.    ;-)

73  John  W0UN