[Amps] new GS-35B amplifier.

[Bill, W6WRT]

ORIGINAL MESSAGE:

On Wed, 15 Apr 2009 12:10:13 +1000, robert briggs <vk3zl at bigpond.com>
wrote:

>
>The running conditions are now as follows...with 75 watts of carrier the 
>amplifier easily produces slightly over 1000 watts out....Increasing the 
>drive to 95 watts carrier the power output is 1400 watts...Anode current 
>for 1000 watts is just on 800ma 

REPLY:

Glad you got it working! Congratulations. 

I am a little concerned about the efficiency, however. If I'm doing
the math right, the efficiency at the 1000 watt level is only about
43% (subtracting the 75 watt drive from the output, since this is
grounded grid). 

1000 - 75 = 925 watts output.  
DC input is 2700 * .8 = 2160 watts.
925 / 2160 *100 = 42.8%.

Seems to me it should be better than that, don't you think?

73, Bill W6WRT