[TowerTalk] impedance measuring antennas

[John Lyles]

Rick
I wasn't serious, tongue and cheek humor about calibrating a VNA for tower top measuring. Do you use phase stable coax, as you lay it down, roll it up or haul it up a tower, doesn't that shift a tiny bit (esp at UHF?). 
John
K5PRO

-----Original message-----
From: "Richard (Rick) Karlquist" richard at karlquist.com
Date: Fri,  6 Mar 2009 14:13:45 -0700
To: jtml at vla.com
Subject: Re: [TowerTalk] impedance measuring antennas

> When I install antennas, I perform this calibration for the coax on the 
> ground and store the cal file on my laptop.  It is not necessary to
> recalibrate every time you measure.
> 
> Rick N6RK
>