[R-390] 6C4-The Final Horse Beating?

[Les Locklear]

"Nothing" could go on as long as the Ballast Tube Thread. I think it is in 
the Beating the Dead Horse Hall of Fame.........YMMV.

Les Locklear
Gulfport, Ms.
Professional Curmudgeon & Equal Opportunity Annoyer


----- Original Message ----- 
From: "Perry Sandeen" <sandeenpa at yahoo.com>
To: <r-390 at mailman.qth.net>
Sent: Sunday, April 23, 2006 5:50 PM
Subject: [R-390] 6C4-The Final Horse Beating?


> Gents,
>
> Roger nailed it on tube peculiarities and selection.
>
> More could be added about tube production and lot swapping among 
> manufactures but let's get this
> vampire horse wooden staked in the heart, garlands of garlic placed around 
> its neck, and buried in
> a mirrored coffin.  Then we can wind down our pacemakers until the next 
> knicker-twister issue or
> sheep arrives.  (If we don't, this could go n as long as the ballast tube 
> comments. HiHi)
>
> The following note is being added to Chapter 7 Parts List Revision.
>
> Note 10:  There is a severe error in the 1956 Army R390-A manual.  It says 
> not to substitute type
> 6C4W for a 6C4.  It stated that the differences in characteristics are 
> such that the type 6C4W
> will not operate properly in the receiver. This is wrong.   Navships 1970 
> manual lists the 6C4W as
> the tube to use.
>
> The "W" and "WA" postscript designations refer to mechanical ruggedization 
> specifications.
> Cross-checking of tube reference data bases confirm that the electrical 
> specifications of all
> types are identical.  A 'ruggedized" or "Industrial" equivalent are types 
> 6100 and 6135 among
> others.  All  versions will work properly.   Some may be quieter or last 
> longer.  See Chapter 9
> supplement for additional tube information.
>
> Regards, Perrier
>
>
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