[Amps] PA efficiency

[Carey Lockhart, KC5GTT]

there is a little more difference than that. the heatsink on the gs35 is a 
wedge fit with a washer and a nut. while the gs-31 simply has a stud and a 
nut. but from there down the are identical. it would be handy if the coolers 
would iterchange.

carey, kc5gtt



----- Original Message ----- 
From: "Glen Zook" <gzook at yahoo.com>
To: <amps at contesting.com>; "KC5GTTCarey Lockhart" <kc5gtt at gmail.com>
Sent: Wednesday, May 18, 2011 2:01 PM
Subject: Re: [Amps] PA efficiency


> 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?