[AMRadio] request for info on using the 6C21

[Geoff Edmonson]

> This is at the expense of tube life.  If the tube is run at 7.5 volts it 
> will do just fine in modulator or rf power amp service, and will last much 
> longer.  Essentially, Eimac said run a 450T's filament voltage up, and it 
> will deliver incredible peak power while it lasts, but will have a short 
> life.

Was it you, Don, who also said (at one time) that running too little of voltage
on filaments can have the same undesireable effect on tube life?

73 = Best Regards,
-Geoff/W5OMR