[Elecraft] Re: [Icom] Opinions re: HF Verticals?

[sjolin]

----- Original Message -----
From: "John Fraizer - KC4KGU" <kc4kgu@enterzone.net>
To: <w5yr@att.net>
Cc: <elecraft@mailman.qth.net>
Sent: Tuesday, October 15, 2002 2:09 AM
Subject: Re: [Elecraft] Re: [Icom] Opinions re: HF Verticals?


> Granted.  When you're operating resonant antennas and the antenna is
> supposed to presenting a 50Ohm load to your rig (via whatever _static_
> means, no adjustable transmatch here) VSWR will indicate that you're
> operating outside of resonance.  Since I operate all resonant antennas, I
> think in terms of ANY VSWR when operating at the design frequenct == BAD

John, plot the vswr of your antenna at various points across the band. The
point at which swr is lowest is likely where the antenna is resonant but as
George said the swr at that point can be well in excess at the 2:1 level
even though its at resonance. Also remember you are reading swr at the rig
and swr should be measured at the antenna. Changing the length of coax used
to feed an antenna will change the swr at the rig. I've seen cases where the
swr will change just by adding an extra couple feet of cable in the shack.

73 de Dave, N0IT