From: Philip Nasadowski
Subject: Re: Digital divide by ten, 1949 style
Date: Wed, 18 Sep 2002 21:43:42 -0400
Organization: Biker/metalhead from hell!!!
References: <3D84D4B3.50B511EF@webaccess.net> <email@example.com>
NNTP-Posting-Date: 19 Sep 2002 01:47:03 GMT
X-Harley: '99 FXDWG
User-Agent: MT-NewsWatcher/3.1 (PPC)
In article <firstname.lastname@example.org>,
email@example.com (William Donzelli) wrote:
> 99.9 percent of the "metals" were true metal enveloped tubes. A few
> companies in the 1930s, when metal tubes were THE thing to have, came
> up with "MG" tubes - glass tubes in metal envelopes. The reason for
> these is that they (Arcturus, Triad, and others) could not manage to
> make true metal envelopes.
Bah, the *cool* thing is the metal envelope CRT. Lightweight, thin
screen, nearly flat screen, dentable, and Kv on the metal envelope.
The 16GP4, etc. A few square, mostly round. And the 21AXP22 and older
21CYP22... Square ones are cool. The trouble is, they all have sucky
vacuum seals and get gassy and die. You can rebuild the B&W ones, but
not color. They sometimes pop though :(
Trendy for a few years, then gone once the 90 degree tubes came in.
Ever see a 21", rectangular, 70 degree deflection CRT? They're *big*
has a few links to my TV collection...
> And to be really bizarre, there are 10 pin miniatures in two formats -
> one having ten pins in the semicircle instead of nine, and one having
> a standard nine pin base but with an extra pin in the center (after
> the tube makers finally abandoned the idea of having the tip on the
> base). These ten pin tubes are not all that rare in the US, but get
> skipped unless one really looks closely.
I have a Zenith with a 10 pin tube. It's a chassis built portable,
series string. Even though it was a cheap tossabout set, it's curiously
decent. Go figure. This was when compactrons came in, I don't get WHY
Zenith did this stupid little tube.
BTW, I'm watching my '63 Zenith color set (round tube! - 21FBP22 :)
*NOT* a rare earth tube. It actually has reds so red they're red, not
orange. It also doesn't glow in the dark like my (rare earth) Sylvania
next to it. Man, talk about freakly, waking up at 2am and seeing a
glowing roundish shape floating in the darkness...
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