Hi Larry, et al....
I don't understand....Oh, perhaps what you are talking about is
a different type of plate cap....My 4-400s have simply a metal rod, about
1/16' dia coming out the top...right out of the glass seal...simply an
anode extension....
Others have this AND a larger diamater, set screwed, shouldered fitting
on it...to which you add your Heat dissipators....Like you see in the
Eimac pictures.....
My dissipators, have
the small hole with setscrew, and horizontal fins... If I dropped the
dissipator directly down the anode pin, it could rest directly on the
glass...therefore I raise it off the glass a fraction....
I surmise that the larger anode fitting must already be floating above
the glass.....
73, DX, de
Pat, AA6EG/N6IJ;
aa6eg@hh.tmx.com;n6ij@hotmail.com
599 DX Drive, Marina CA 93933
See us on the web: www.polkinghorn.org/n6ij
"The Contest Station from the Government"
On Thu, 7 Oct 1999, Larry Molitor wrote:
>
> At 01:06 PM 10/7/99 -0700, Pat Barthelow wrote:
> >Hi Guys,
> >
> >One thing you might want to be careful of when mounting Anode coolers, is
> >to lift the metal heat dissapator slightly off the glass of the tube,
> >before cinching down the set-screw, to prevent dissimilar expansion rates
> >of the glass, and metal from creating stress on the glass seal.....
> >
> >73, DX, de
> >Pat, AA6EG/N6IJ;
>
> Certainly a reasonable precaution with tubes like 813's. Not a problem with
> 4-400 class tubes. Take a close look at one, you'll see why.
>
>
> 73,
>
> Larry - W7IUV
> w7iuv@arrl.net
> http://www.axtek.com/w7iuv
> Amp pix at http://207.108.137.61
>
>
>
> --
> FAQ on WWW: http://www.contesting.com/ampsfaq.html
> Submissions: amps@contesting.com
> Administrative requests: amps-REQUEST@contesting.com
> Problems: owner-amps@contesting.com
> Search: http://www.contesting.com/km9p/search.htm
>
--
FAQ on WWW: http://www.contesting.com/ampsfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|