🚀 go-pugleaf

kludge@grissom.larc.nasa.gov (Scott Dorsey) writes:

>You won't get 200 watts out of the 6550s by any means, unless you
>parallel a bunch of them.  Even the 4CX150 isn't going to give you
>that much power when you start running it in class A.

Huh??  I have some 4X150A's and some 4CX250B's but suspect the
4CX150 is a product of someone's dreams...   A pair of the 4CX250's
would give you 500 watts of plate dissipation and if you can't get
200 watts of audio out of that, even class A, you're probably doing
something wrong!  But the forced air cooling is a real drag; the
833's have such a pretty glow, too, and don't take the forced air.
833's were used in old broadcast transmitters, and a pair in CCS
would be happy to supply the 700 or so watts of audio required for
a 1kW output AM transmitter.  In fact, the modulation transformer
for a broadcast transmitter, rewound, might make a decent output
transformer.  They are big enough physically (though not so big as
the modulation choke ;-) ...