Re: truly massive Tube Coil

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Mddeming-at-aol-dot-com>

In a message dated 2/20/02 1:53:02 PM Eastern Standard Time, tesla-at-pupman-dot-com
writes:



>
> Hi All!
>
>         It's just a sickness, I tell you.  Coilers have some measure of
> insanity, a little demon on our shoulder that whispers, "Phase in another
> NST.  Crank the Variac to 140v out...Wind an 8" coil...good....now buy a
> polepig!...."
>
>     It was that little demon that whispered to me, "You *NEED* that GU10A
> transmitting tube...."  So I have coming to me a 10kW russian transmitting
> triode. This thing moves so much power the anode (plate) must be kept in a
> water bath, in addition to the forced air cooling of the base of the tube.
> The filament alone pulls more power than most coiler's NST powered coils.
> The tube can crank out over an amp at 8kv, and it can run up to 26mhz (not
> important).   The quad 833 coil is truly a powerful device.  It melts
> drywall screws and heats up tungsten-carbide to white hot for crying out
> loud, and that's only at 2kw input (of 3kw it's capable of handling for 15
> min or so).  I can very well imagine what 4x that power will do.
>
>     Much designing, planning, and scrounging to be done!  My #1 enemy with a
> coil of this power level is *HEAT!*  The quad 833 heats the primary coil to
> scalding hot in just a few minutes.  Not to mention the fact that the FCC
> will disapprove *very* highly of an unlicensed transmitter running at many
> thousands of watts....on a broad band no less......Looks like I'll be
> choking and tuning and suppressing *everything*.
>
> Take care everybody!  Comments, suggestions, snide remarks welcomed! 



And the little demon whispers,"Next, you really want an RCA 5770 (28KW triode)"

Matt D.