[Amps] High SWR,

[Carl]

Roger, youre correct; its been said so many times you would think it 
would sink in.

But with noobs from the CB/FM ranks old myths die hard. They cant be 
bothered buying a Handbook or Antenna Manual and just spout off on here 
and elsewhere with zero idea of what they are talking about.

Carl
KM1H


----- Original Message ----- 
From: "Roger Parsons" <ve3zi at yahoo.com>
To: "Amps" <amps at contesting.com>
Sent: Wednesday, April 22, 2009 8:13 PM
Subject: Re: [Amps] High SWR,


>
> I know this has been said before, but just because your SWR meter says 
> there is x Watts of power coming back down the line, it doesn't mean 
> that it is being dissipated in your transmitter. All it means is that 
> the transmitter sees a load other than 50 Ohms (or whatever) - and it 
> may or may not be able to match it. If you have a really bad mismatch 
> you can (apparently) have the situation that your 100W transmitter is 
> (say) transmitting 1kW and getting 900W back. Obviously that can't 
> really happen - the reason that it seems to is that the SWR meter is 
> measuring Volt-Amperes (reactive power) rather than Watts (real 
> power) - that is that the current and voltage are not in phase - 
> except in the special case of a 1:1 SWR.
>
> 73 Roger
> VE3ZI
>
>
>
>
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