[Amps] High SWR

[Alex]

... sorry, but something really doesn't fit!
RG 213 has a withstand voltage closer to 6000 (six thousand) volts rather
than 600!
Alex	4Z5KS


-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
Behalf Of Rex Lint
Sent: Thursday, April 23, 2009 4:02 AM
To: dezrat1242 at yahoo.com; amps at contesting.com
Subject: Re: [Amps] High SWR

Huh?  600 Volts?  Where did that figure come from?

      -Rex-
 
       K1HI
       Rex Lint
       Merrimack, NH 


-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
Behalf Of Bill, W6WRT
Sent: Wednesday, April 22, 2009 7:53 PM
To: amps at contesting.com
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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