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[AMPS] You gotta read this....

To: <amps@contesting.com>
Subject: [AMPS] You gotta read this....
From: measures@vcnet.com (measures)
Date: Wed, 13 Oct 1999 17:42:49 -0700
>
>
>I'm quoting without names a message from what our CB brethren are up to.
>
>
>"Take for instance...
>
>
>2X4CX15,000 being driven by 3X8877
>Ep was close to 14 kV on the 15,000s....
>
>Power output was capable of over 80,000 watts Bird.  Tuning it up, with
>a 
>1 kW slug in the Bird meter for reverse measurements, we couldn't get it
>to 
>wiggle up to 40 kW forward output.  At the 44 kW mark (or thereabouts),
>we 
>blew the top of the antenna off, a nice blue corona came, and the
>antenna 
>spit flames!  Nice, to say the least.  The tubes are run Class C, and 
>tetrodes are the tube of choice.  What with screen volts, you get better 
>efficiency.  Just have to keep those grids biased WAY negative, and you
>can 
>live with the higher plate voltage.
>
>After that, we went to a "fighting stick" (Quarter wave, usually made
>from 
>3/4 inch copper pipe, chrome plated) and we where able to tune the amp
>to 
>75 kW.  It still had more to go, but that was where we left it for a 
>competition.  This was the inaugural run of the amp.
>
>You might wonder where the power comes from for one of these beasts (and 
>this is smallish.  The last one that I saw perform (over 4th of July)
>was 
>capable of nearly 125 kW Avg. output)).
>
>Usually it is a big block motor, using alternators made by the
>Electrodyne 
>company.  They are designed as Locomotive Braking motors, but run with a 
>small voltage on the field, they will act as an alternator...  They are
>dual 
>stator, single rotor, producing 60 volts at 600 amps each stator, run
>full 
>field.  Run 5 to 7 of these.
>
>Engine:  Large stroke, large bore with Nitrous is the name of the game.  
>Typically see 500+ horsepower.
>
>So, you see, the CB community has really started going nuts.  I don't
>agree 
>with the power levels run, but that is what the market "demands".
>
>Like I said, if you want a good "big picture" scene, look at 
>www.bigradios.com/shadow...  Come see what us goofy CBers are doing.
>
>I had one blow the high voltage power supply from my video camera..  I
>was 
>about 100 yards away... This was from near field radiation picked up by
>the 
>power lines."
>
>
>Oh Boy, Phil W2GE
>
Bovine Feces.  
>


-  Rich..., 805.386.3734, www.vcnet.com/measures.  


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