There are quite a few of these tubes surplus in the Dallas flea markets. They
were used in an airborne linear built by Rockwell (Collins). I have seen one
and it is unbelievably compact . I believe the tubes are replaced during
maintenance overhaul . One of the Rockwell engineers told me that they were
designed by Eimac specifically for that application and that the price
prevented much ham use. There are several guys that I know of who have used
them in ham linears. One of my friends bought a 5 gallon plastic bucket full
of the pulls at a scrap dealer. They are usually discolored from heat but he
said he has not found a single bad one in the lot. He gave me 4 of them which
I may put into a linear some day. 73, Dan, N5AR
Scott Townley wrote:
> I was just browsing thru my Eimac catalog and noticed the
> 4CX600J...designed for AB1 service, low IMD specs, reasonable PS
> requirements, could use the ubiquitous 4X150/4CX250 sockets...
> I'm curious why I've not seen these in use in amateur equipment. Seems a
> pair of them would be preferred to a single 4CX1000A (total grid diss. 2W
> instead of 0W; plus 200W reserve plate diss.). Is there a rap on these or
> are they "undiscovered"?
> Just curious...thanks in advance.
> ------------
> Scott Townley
> nx7u@primenet.com
> Gilbert, AZ
> ------------
> Collector of:
> Stoddard Aircraft EMI/RFI receivers and accessories
> Big Parts for that Big Linear Amp
> 70's era RF test equipment HP/GR/Tek
> Radio-related technical reference material 1940+
> http://www.primenet.com/~nx7u (someday might have useful info!)
>
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