[Amps] 20kw Dummy load?

[Harold B. Mandel]

Dear Robin,

        Since you're UK-based, it would do no good to suggest US
suppliers...

However, UK-based television stations, when they do an annual POP
or xmtr alignment, will rent a portable DL from somewhere in the UK.

These devices are on trailers and rent for the day, week, etcetera.

Check with a broadcaster on your island, and check into the internet
under Broadcast Equipment Rentals.

Cheerx,

Hal Mandel
KA1XO





On Thu, 12 Aug 2004 22:06:23 +0100 Robin Szemeti <list at redpoint.org.uk>
writes:
> Hi,
> 
> I need to use / beg / borrow / steal a decent dummy load to test 
> this 
> amplifier out .. running into its intended load I've had a couple of 
> DC 
> flashovers *somewhere* and I'd like to run the amp up into a dummy 
> load, just 
> to prove it to myself  ...  
> 
> anyway ... has anyone got, for loan or whatever, a 50 ohm, 50mhz 
> dummy load, 
> capable of standing around 20kw CW for at least 5 minutes, water 
> cooling is 
> OK, we can do that.  Ideally it should be 3 1/8" EIA flange,  but 
> I'm 
> prepared to get busy on the lathe to make up a fitting if I have to. 
> 
> 
> Actually, Id even settle for a gigantic 50ohm resistor that I could 
> watercool 
> myself, not averse to a bit of lathe work to make a water jacket for 
> it. Are 
> normal carbon tubular ceramic resistors OK in a water jacket or do 
> you  need 
> 'special' ones btw?
> 
> I'm UK based ...
> 
> -- 
> RapidCut CNC Technology
> 
> CNC Plasma Cutter
> http://www.rapidcut.co.uk/
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