[Elecraft] LDMOS for QRO [OT]

[Wes (N7WS)]

Oops typo.  "F-14" aircraft

On 12/16/2014 10:27 AM, Wes (N7WS) wrote:
> Unless you want to run fresh water down the drain (in Arizona we don't do 
> this) you have to get the heat into the air someplace.  I'm not sure that 
> running water lines to outside air is much easier than getting coax through a 
> concrete wall.
>
> Speaking of difficult, the U.S. Navy AIM-54A Phoenix Missile which with I was 
> intimately familiar, used oil (Coolanol) cooling. Chassis were mounted on cold 
> plates and the vacuum tube modulator and pulse transformer were immersed in 
> oil and it also circulated through the PA klystron.  Lines ran from the 
> missile umbilical to the wing or belly mounted launchers then to the F4 
> aircraft where a conditioning unit resided.  The stuff was insidious to work 
> with.  I ruined lots of clothes,  And it was hygroscopic, just the thing to 
> use on a ship-borne system.
>