Lamont wrote:
Yep for real See video at URL:
http://dailymotion.alice.it/video/x3...e-lampe-triode

Nice Music Too
Brush Up on your French

From F2FO, radioamateur depuis 1959, montre ici les différentes étapes de
la
construction d'une lampe triode réalisée par ses soins.

Lamont

That's pretty groovy. If you Google the guy's callsign, the first hit will
be his website: http://paillard.claude.free.fr/
I clicked the "Translate this page" link, and was able to read some of the
plethora of text. It didn't help me with the French subtitles in the video,
though!

Bryan WA7PRC

Yep for real See video at URL:
http://dailymotion.alice.it/video/x3...e-lampe-triode

Nice Music Too
Brush Up on your French

From F2FO, radioamateur depuis 1959, montre ici les différentes étapes de la
construction d'une lampe triode réalisée par ses soins.

Lamont

The Shadow wrote:

Yep for real See video at URL:

absurd italian url snipped

There has been a thread on this topic in sci.electronics.repair; I
quote my last post here and refer others to the previous thread:

N Cook wrote:
snip --- why does everyone persist on quoting that absurd Italian
URL when I posted the proper ones days ago?


What was the small hinged halved chamber , he used a few times? - for
annealing the glass ?

I did not follow the getter process.
Would someone have to be licensed to get hold of barium, caesium ?


Here is a repost of the reference:

Thanks for the post; very inspiring. For anyone wishing to learn more,
the author's website is:
http://paillard.claude.free.fr/

Also, you can access the video more simply he
http://www.dailymotion.com/swf/x3wrzo

(just the flash player, no baggage).

If you wish to save the video, make sure your browser's cache has at least
60MB free space; when the video has concluded playing, look for a file
of size 57,195,733 bytes. Copy this to 'filename.flv' and play it in
VLC, or any flv player.

At last!. I had been looking for vacuum tubes homebrewing for ages.
Very good job. Of course, having all the needed tools does help!. Does
anybody know about vacuum pumps homebrewing??? :-)
Daniel Perez

lw1ecp wrote:
At last!. I had been looking for vacuum tubes homebrewing for ages.
Very good job. Of course, having all the needed tools does help!. Does
anybody know about vacuum pumps homebrewing??? :-)
Daniel Perez

A simple "column of mercury" (the metal) can pull the necessary vacuum,
you can also run pumps in series--for this application--most likely
would be cheaper to buy the supply of mercury and set up a column to
pull the vacuum for you.

Regards,
JS

Does anybody know about vacuum pumps homebrewing??? :-)

A LONG time ago (maybe 40 years?), Scientific American carried an article
(in "The Amateur Scientist" pages) about making a vaccuum pump. (It may
have been part of or near an article about making your own laser which
was strong enough to bounce signals off the moon!)

--
--Myron A. Calhoun.
Five boxes preserve our freedoms: soap, ballot, witness, jury, and cartridge
NRA Life Member & Certified Instructor for Rifle, Pistol, & Home Firearm Safety
Also Certified Instructor for the Kansas Concealed-Carry Handgun (CCH) license

lw1ecp wrote:
At last!. I had been looking for vacuum tubes homebrewing for ages.
Very good job. Of course, having all the needed tools does help!. Does
anybody know about vacuum pumps homebrewing??? :-)
Daniel Perez

If you wish to go the vacuum pump route, an old refrigerator unit can
pull a vacuum. I would think you would need at least two in series with
a small tank (reservoir) in between the pumps ...

JS

The guy is a mad scientist... The video is a real hoot to watch... It
is interesting all the jigs and tools he has/made... I wonder if he
bought some of it as surplus from a commercial tube factory, maybe
circa 1920's..
I would have liked to have seen a bit more on the details of the
gettering and filament activation...

So, there ya go guys: it is only a small step from that little triode
to making your own 3CX15000A7 in the basement...

denny / k8do

Denny wrote:
The guy is a mad scientist... The video is a real hoot to watch... It
is interesting all the jigs and tools he has/made... I wonder if he
bought some of it as surplus from a commercial tube factory, maybe
circa 1920's..
I would have liked to have seen a bit more on the details of the
gettering and filament activation...

So, there ya go guys: it is only a small step from that little triode
to making your own 3CX15000A7 in the basement...

denny / k8do

Absolutely! That damn video clip is just sheer fun to watch! I'd love
to have a friend who made 'em in their basement!

Regards,
JS

John Smith wrote:
lw1ecp wrote:
At last!. I had been looking for vacuum tubes homebrewing for ages.
Very good job. Of course, having all the needed tools does help!. Does
anybody know about vacuum pumps homebrewing??? :-)
Daniel Perez

If you wish to go the vacuum pump route, an old refrigerator unit can
pull a vacuum. I would think you would need at least two in series with
a small tank (reservoir) in between the pumps ...

JS

I was thinking, a couple of air conditioning compressors off autos would
make a heavy duty vacuum pump.

JS