Random Crazy Amplifier build

[AudioShockwav]

The 4CW100000E is a ceramic/metal, high-power tetrode for applications requiring tube outputs from 100 to 250 kilowatts. It is ideal for use as a Class C rf amplifier or oscillator, a Class AB rf linear amplifier, or a Class AB push-pull af amplifier or modulator as well as a plate- and screen-modulated Class C rf amplifier. In pulse-modulator service, it can deliver a peak output of 4 megawatts. The tube is characterized by low input and feedback capacitances and low internal lead inductances. Its rugged mesh thoriated-tungsten filament provides ample emission for long operating life. The water-cooled anode dissipates 100 kilowatts when used with the EIMAC SK-2100 water jacket.
The guy claims it's for 11 meters........



73
Jeff

 

[brandon7861]

Where's (what's) the driver? Whats it need for input power?

Can't wait to hear it on the air

edit: That's a little beyond N connector territory too. The feed line is probably going to cost more than everything else unless he goes to the culvert store and buys some 12" and 5" sections lol.

 

[AudioShockwav]

Better have one hell of a electric service, just the filament takes 15.5 volts at 215 amps to light it up.
Drive?
Check this out

https://www.relltubes.com/documents/Datasheets/4CW100000E.pdf

Feeding the antenna might get expensive with 6" coaxial hardline.....

I will stick with my little stuff.

73
Jeff

 

[VMC]

Well... technically if it's for dielectric heating on the 11M ISM band, he'd be telling the truth.
That cabinet is a little spartan for a transmitter

 

[AudioShockwav]

27.12 if I remember correctly


73
Jeff

 

[VMC]

27.12 if I remember correctly


73
Jeff

Yep, right dead centre of the ISM.
Maybe retune it for 13560 KHz so HiFER ops can be heard over R. Marti wiping the place out

 

[nomadradio]

They give you operating specs for class C RF. 120 Watts drive for 220 KW output. Grid driven, of course. The neutralizing capacitor's plates would look like the covers from an oil drum. No guidance on drive power needed for linear operation. 3-inch heliax might be too small. Unless it's located in the middle of a 40-acre plot you'll have RFI issues. Might make the rusty fence wires sing the way WLW did when it was 500 KW.

For full power you'll need water at 20 GPM with 19 psi delivery pressure. No advice on how big a radiator it requires.

73