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Re: [Amps] kW dummy load resistors

To: amps@contesting.com
Subject: Re: [Amps] kW dummy load resistors
From: Ian White GM3SEK <gm3sek@ifwtech.co.uk>
Reply-to: Ian White GM3SEK <gm3sek@ifwtech.co.uk>
Date: Fri, 19 Feb 2010 13:10:24 +0000
List-post: <amps@contesting.com">mailto:amps@contesting.com>
> Hello all....
>
> I was wondering if there is a good source of resistors out there that could 
> be used in building a dummy load that will handle a KW....????
>
> Any suggestions welcome?
>
> Thanks,
>
> Dave
> KB8NNU

Another option, using thin film resistors on a large air-cooled 
heatsink:

http://www.granta.g4axx.com/Attenuator.php3

This is actually a 30dB attenuator, so 1kW input delivers a 1W sample at 
the output socket. This can be very useful for measuring the power with 
simple test equipment, or for harmonic measurements. If you're building 
a dummy load, it's well worth the extra effort to make it an attenuator 
instead.


-- 

73 from Ian GM3SEK
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