Radio WC6W <wc6w@juno.com> says
> Removing the 2C39 cooler should be fairly easy. The ones I've seen
>either unscrew or are held on by a couple of set screws.
>
> The question is... Is there enough material to drill a hole big enough
>for a 4-1000A. I just measured one the 2C39 coolers and it looks like
>you need to drill the center hole out to 9/16" which will leave about
>.025 walls -- might be a bit tricky. Do you have a drill press?
Except for not having a bandsaw or lathe, I'm pretty well set. The drill
press is easy to manage.
The particular tubes I got were not 2C39s, but have a similar finned
external anode. I see no set-screw on them; otherwise I would have already
pulled the anode and put it on my physical-specimen 4-1000.
Now, I'd have to look at a 4-1000 again, but IIRC its anode cap has a
setscrew and is removable, leaving the actual pin to the anode exposed --
it's about 1/8" in diameter.
Cheapskate-a-mundo that I am, I'm always looking for ways to recycle
otherwise useless junk into usable radio parts.
Next project -- making HV PS filter caps from tinfoil and wax paper!!
Jim N6OTQ
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