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Re: [TowerTalk] 75 ohm - v - 50 ohm coax

To: <towertalk@contesting.com>
Subject: Re: [TowerTalk] 75 ohm - v - 50 ohm coax
From: Anthony R. Gold <ham-radio-mail-lists@ahjg.co.uk>
Date: Tue, 19 Feb 2013 17:10:52 +0000
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On Tue, 19 Feb 2013 06:10:35 -0800, you wrote:

> Date: Mon, 18 Feb 2013 13:38:14 +0000
> From: Steve Hunt <steve@karinya.net>
> Cc: Towertalk@contesting.com
> Subject: Re: [TowerTalk] 75 ohm - v - 50 ohm coax
>
> If the antenna has an impedance of 50 Ohms, and the coax is close to a 
> quarter-wave or odd multiple long, you'll see an SWR(50) of 2.25:1 at 
> the shack end instead of 1:1.
>
> 73,
> Steve G3TXQ
>
> ##  I thought it would be just 75/50 =  1.5:1  
>
> Jim  VE7RF

A good thought, and if you use a 75 ohm VSWR meter you can measure that.
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