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Re: [TowerTalk] Relay Box Measurements

Subject: Re: [TowerTalk] Relay Box Measurements
From: Jim Lux <>
Date: Sun, 26 Aug 2012 15:09:38 -0700
List-post: <">>
On 8/26/12 2:17 PM, K8RI wrote:
> On 8/26/2012 1:27 PM, Jeff DePolo wrote:
>>> when you do the measurements (using some form of VNA, I
>>> presume), do you
>>> cal with a set of standards with UHF connectors, or something else?

> For myself I'm really not interested in reaching lab grade accuracy.
> If line loss is within a few tenths of a db of the manufacturers specs,
> I'm happy.  That lets me compare coax cables as well.
> If I can find discontinuities within a few tenths I'm also happy.
> My primary interests are SWR, finding resonance, and bandwidth.
> Using the TDR function it's finding those discontinuities such as coax,
> coax connector, or relay problems.

I'm interested in things like port to port isolation..

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