[Boatanchors] 416B threads ... was RE: SI units and the rest

[Sandy]

I gather from an old AT&T long lines buddy of mine who used to work in the 
microwave department, it was mounted in the equipment via this ring.  (I'd 
imagine it went into the cavity and was used as a grounded grid amplifier) 
All that gear is gone now of course.

The 416B was a very high performance low noise amplifier at microwave 
ferquencies at the time.  It was the "last word" for 2 meters and 432 Mhz 
during its heyday.

73,

Sandy W5TVW

----- Original Message ----- 
From: "Kludge" <wh7hg.hi at gmail.com>
To: <boatanchors at mailman.qth.net>
Sent: Wednesday, November 17, 2010 8:21 PM
Subject: [Boatanchors] 416B threads ... was RE: SI units and the rest


-----Original Message-----
From: jmfranke [mailto:jmfranke at cox.net]
> The grid ring on a 416B triode is threaded 3/4"-40.

Hmmm ... was this used to support the tube or simply to ensure positive
contact?

Best regards,

Michael, WH7HG BL01xh
http://www.nationalmssociety.org/chapters/NTH/index.aspx
http://wh7hg.blogspot.com/
http://kludges-other-blog.blogspot.com
Hiki Nô!

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