I worked W3MPG today, who was using a single 4CX150f (26 volt fil) in screen modulated service. It sounded very good, and the entire modulator was a Berringer mic preamp gizmo. Marty said he was getting 40 watts carrier out at about 800 volts, and you could run the tube up to 2000 volts and likely get what, 100 watts out? The 4CX250 series has 250 watts of plate dis, what would that be good for using screen modulation?
A pair at 2000 volts might give a nice amount of power out, and very good audio, with no modulator or mod iron. Using variacs on the bias and screen volts, I suppose you could plate modulate it as well, if you modulate the screen as well as the plate. It seems like a pair could make a small 200/300 watt rig with good audio. I have a crap load of tubes, but only one socket and two chimneys. Fair radio used to sell them, where do you get them now? Brett N2DTS ______________________________________________________________ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected]
