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Old January 14th 08, 12:44 AM posted to rec.radio.amateur.homebrew
cbx cbx is offline
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Default Homebrew Triode !!

Dear Nate;

Thanks, found the UNPLUG at Mozilla site, installed it, and it worked
just fine, now have the file on hard drive to share with friends.
Outstanding film, and thanks to you fellows for helping me find
a way to get it on the computer.

Jim





On Sun, 13 Jan 2008 10:48:00 -0600, Nate Bargmann
wrote:

On Thu, 10 Jan 2008 10:04:03 -0600, cbx wrote:

Anybody know where FIrefox stores the file, I searched the whole
computer for the file name, nothing. Looked in all the obvious places,
no luck.


Get the Unplug add-on, then you can snag all sorts of media files.

I finally got around to watching it last night. Quite impressive. After
all, DeForest et.al. developed these methods when such techniques were
unknown and more primitive. What he shows is that things can be done on
a small scale and don't require large factories or armies of workers.
Also, techniques like those he shows need to be preserved from being lost
to industrial archives.

Beyond the electrical knowledge to make a tube that works, his ability to
work with glass was most impressive to me.

73, de Nate


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Old January 8th 08, 01:44 PM posted to rec.radio.amateur.homebrew
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Default Homebrew Triode !!

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


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Old January 10th 08, 12:16 AM posted to rec.radio.amateur.homebrew
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Default Homebrew Triode !!

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
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Old January 10th 08, 03:34 AM posted to rec.radio.amateur.homebrew
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Default Homebrew Triode !!

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
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Old January 10th 08, 05:07 AM posted to rec.radio.amateur.homebrew
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Default Homebrew Triode !!

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


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Old January 11th 08, 12:37 AM posted to rec.radio.amateur.homebrew
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Default Homebrew Triode !!

In article ,
ken scharf wrote:

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!)


You can get a reprint of this book from Lindsay books
www.lindsaybks.com


Or, go to www.surplusshed.com and do a search on "CD". They have
copies of Scientific American's "The Amateur Scientist on CD-ROM"
collection in the Miscellaneous category (item M2071).

"From the archives of Scientific American Magazine, more than 72 years
of experiments and projects from all The Amateur Astronomer, The
Amateur Telescope Maker, and The Amateur Scientist columns from the
beginning in 1928 thru 2001. Every article is complete with all
photos, sketches, etc. More than 1,000 projects in every major field
of science.

"This comprehensive package also includes over 2,000 pages of helpful
Technical Notes that never appeared in the magazine covering topics
from choosing binoculars for astronomy to monitoring earthquakes, as
well as the full text of Procedures in Experimental Physics by John
Strong, a classic and much sought after reference on instrument making."

List price $40, being closed out for $24. I bought one a few years
ago shortly after it came it... it's an impressive collection of
experiments and ideas. Some of them are censored dangerous,
others as safe as milk.

SA's decision to shut down the Amateur Scientist column was a
disappointing one, I think.

--
Dave Platt AE6EO
Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!
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Old January 10th 08, 06:25 AM posted to rec.radio.amateur.homebrew
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Default Homebrew Triode !!

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
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Old January 10th 08, 01:29 PM posted to rec.radio.amateur.homebrew
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Default Homebrew Triode !!

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


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