From: "Michael A. Terrell"
Subject: Re: Digital divide by ten, 1949 style
Date: Thu, 19 Sep 2002 22:10:30 -0400
Organization: I'm trying!
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William Donzelli wrote:
> "Geoffrey G. Rochat" wrote in message news:...
> > I've seen 10-pins-in-a-circle on Nixies (as well as many other oddball
> > Nixies bases), but never 10 pin small-signal "receiving" tubes, nor
> > similar 10+1 pinners.
> 9 + 1, actually. Unlike 10 pin Nixies, the 10 pin minis (without the
> center pin) still maintain a break in the circle for the index.
> > They don't show in any of the several vintages of
> > RCA, Sylvania or GE manuals I have, nor are they in RCA's HB-3, nor any
> > of the Radio Amateur's Handbooks. The best tube base reference I can
> > find is:
> > http://w1.879.telia.com/~u87908413/bases/index.htm
> You need a copy of Tube Lore (by Luwell Sibley).
> > And he doesn't list 10-pinners or 10+1 pinners. What tubes are these
> > William? Curious minds desire to know...
> The most common of the mutants is probably the 6C9 (and 17C9)
> duotetrode. I think I have a few in my hamfest stock. 6J9 is another,
> although not nearly as common.
> The number 9 in the last position for minis is a red flag.
> William Donzelli
I have some Beckman SP-355 three digit seven segment plasma displays
with 30 pins.
An old fart since August 5th, 2002!
Michael A. Terrell
Check out my web site and tell me what you think.
I'm up to 160 pages, and still working on it.