[Amps] High SWR

[KB0NLY]

Very good point, thanks for mentioning that I never thought about the 
voltage rating of the feedline at the higher SWR.  Can specs be found for 
the various types of coax showing their max voltage?  A chart would be nice.

73,

Scott


----- Original Message ----- 
From: "Bill, W6WRT" <dezrat1242 at yahoo.com>
To: <amps at contesting.com>
Sent: Wednesday, April 22, 2009 6:53 PM
Subject: Re: [Amps] High SWR


> ORIGINAL MESSAGE:
>
> On Wed, 22 Apr 2009 17:39:22 -0400, Pete Smith <n4zr at contesting.com>
> wrote:
>
>>, but SWR, per se, is not
>>something to worry yourself about, so long as the amplifier can match the 
>>load.
>
> REPLY:
>
> I agree up to a point. The main villain with SWR, IMO, isn't loss, it
> is the excess voltage present on the line. Most coax, even the RG-213
> size, is rated for only 600 volts. If you have a 2:1 SWR at 1500 watts
> you are living on the edge already. Go to 3:1 and you have crossed the
> line.
>
> I won't say it can't be done, but a wise op won't.
>
> 73, Bill W6WRT
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> Amps at contesting.com
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