[Amps] PA efficiency

[Glen Zook]

The GS-31b and the GS-35b are the same tube except for the heat sink which "screws" on.  You can remove the heat sink from the GS-35b and put it on the GS-31b and then the GS-31b will have 1500 watts dissipation instead of 1000 watts.

Glen, K9STH

Website:  http://k9sth.com


--- On Wed, 5/18/11, Carey Lockhart, KC5GTT <kc5gtt at gmail.com> wrote:

i was affraid of that. 58.3%. my gs31 2 meter amplifier i use for a standby isnt much more efficent than my gs-35 that just croaked. i have been using these yu1aw designs. have yet to get the rated operating paramters listed. i dont even have a clue where to start. i am wondering if there is a more proven design better suited to my skill level. any suggestions?