On Jun 23, 2006, at 10:06 AM, Gudguyham@aol.com wrote:
> In a message dated 6/23/2006 10:24:41 AM Eastern Daylight Time,
> email@example.com writes:
> 85w will drive a 3cx1200A7 to the point where it is beginning to run
> out emission.
> > ...
> R L MEASURES, AG6K. 805-386-3734
> Hmmm, there is quite a significant increase in the output power of
> this particular amp (AMERITRON AL-1200) between 85 watts of drive
> and 100 watts of drive,
How much anode-I?
> so it seems that the tube continues to make power from 85-100 watts
> of drive. At that point (100 watts of drive) the grid current is
> about half of the maximum permissible.
There is no max grid-current rating for the 3cx1200A7.
> I contend that the amp would continue to make power right up to the
> maximum permissible drive level of 130 watts.
3-500Zs will continue to make more power up to about 550mA of anode
current, but they begin to get non-linear c. 420mA.
> quote from Ameritron AL-1200 operating manual "maximum permissible
> drive power 130 watts"
> Ron, hook that baby up to your FT-1000 and run it up with 130 watts
> and let us know what it does.
R L MEASURES, AG6K. 805-386-3734
Amps mailing list