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Re: [TowerTalk] Elevated vertical

To: 'K8RI' <>, "" <>
Subject: Re: [TowerTalk] Elevated vertical
From: Al Kozakiewicz <>
Date: Sat, 24 Dec 2011 00:30:42 -0500
List-post: <">>
That's my understanding as well.

You can't ignore VSWR altogether, however.  There are a couple of 

1. Many, maybe most, hams that understand changing transmission line lengths 
helps effect a match think that VSWR changes with length as well. Except for 
the added loss, it doesn't.  Also, VSWR is, by definition, the same everywhere 
along a lossless transmission line.  Stating that to a wide audience of hams 
almost always starts an argument.
2. Everyone knows (or should know) that high VSWR = higher losses in coax.  
Whether those losses are material depends.
3. Most important for those that run QRO is that componments rated for 1500 
watts need to be derated when the VSWR is high due to the elevated voltages.  


-----Original Message-----
[] On Behalf Of K8RI
Sent: Saturday, December 24, 2011 12:17 AM
Subject: Re: [TowerTalk] Elevated vertical

On 12/24/2011 12:08 AM, Al Kozakiewicz wrote:

It's been my understanding that a simple wire antenna, or vertical doesn't care 
if it's resonant or not, nor does the antenna care if it's reactive or not.

You tune out the reactance and match the impedance to get maximum power into 
the antenna.  I'm neglecting phasing and directivity due to to the antenna 
length Vs wavelength, but even then the antenna will work just fine not being 


Roger (K8RI)


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