[AMPS] 4CX10000

[Rich Measures]

>Rich says:
>
>>However, on the subject of good manners, contesting's dirty little secret
>>is that there are some top contestors who use the 4CX10,000D in contests
>
>Do these guys ask the power company to give them a 3 phase supply to the
>home? 

€  I ran mine from a 100a single-phase service with 40a slow blow 
breakers for the amplifier feed.  I tuned up with a tuning pulser.  When 
I tuned up, my neighbor's porchlight pulsed.  A resonant-choke supply 
would have been less problematic, but heavier and costlier.  For SSB, a 
C-filter was fine.  

>The mind (at least mine, anyway) just boggles at the thought of the
>engineering effort in supplying that much power in a home environment. I
>presume that they don't have a pre-payment electricity meter which they have
>to feed with quarters, either!

€  The average duty-cycle on SSB is only 15%.  If one runs high-speed 
VOX, there is little extra expense, provided that one uses no more power 
than is necessary to communicate.  
>
>I also guess that they don't have neighbours - within a few miles.
>
€  Before I built my tetrode with handles amplifier, 100w would get into 
my next-door neighbor's telephone answering machine.  After I installed 
the filtering discussed on my Web site, the extra 20db to the antenna did 
not interferfere.  

>Or is it a case that run legally, the plate surface area is large enough
>that you don't need to blow it?
>
€  To even run the 560w filament, you need to blow it.  0.5" of water 
column is plenty for SSB unless one runs a CB style speech processing.    

>
-  cheers, Peter


Rich...

R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures  


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