WOW,
That's bigger than the usual requests I get, usually for 5KW out "dead key"
as they say.
All CB or smell of CB requests are turned down by reputable manufacturers.
What you describe sounds like homebrew craziness!
73, Dan Magro W7RF, (President WARC 1999, member SCDXC, SCCC)
Manufacturers Rep & Distributor for HENRY RF Power Amplifiers.
RF Applications Power Measuring equipment, See the VFD & WinWatt!
www.radiodan.com <http://www.radiodan.com> RFpower@radiodan.com
<mailto:RFpower@radiodan.com> A trip to our web site is worth the click!
> -----Original Message-----
> From: owner-amps@contesting.com [mailto:owner-amps@contesting.com]On
> Behalf Of Phil Levin W2GE
> Sent: Wednesday, October 13, 1999 5:05 PM
> To: amps@contesting.com
> Subject: [AMPS] You gotta read this....
>
>
>
>
> 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
>
> --
> FAQ on WWW: http://www.contesting.com/ampsfaq.html
> Submissions: amps@contesting.com
> Administrative requests: amps-REQUEST@contesting.com
> Problems: owner-amps@contesting.com
> Search: http://www.contesting.com/km9p/search.htm
>
>
--
FAQ on WWW: http://www.contesting.com/ampsfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|