[Amps] Who was looking for the 20kw Dummy load?

[R.Measures]

On Aug 15, 2004, at 1:35 PM, Mike McCarthy, W1NR wrote:

> I missed your original post and don't have your email, but a buddy of
> mine has
> a Bird 2.5KW continuous air cooled unit for sale that might work if
> submerged in water or
> oil.

Mike --  Not likely since, at even at 10kW, the oil will likely boil 
where it contacts the resistor, and the resistor is history.

>  It has the EIA fitting and a couple of adapters, including one for
> "N" connectors.  Contact me directly if interested...
> w1nr at earthlink.net.
>
> Mike, W1NR
>
>
> Robin Szemeti wrote:
>>
>> 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 ...
>
>
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>
Richard L. Measures, AG6K, 805.386.3734.  www.somis.org