[R-390] off topic tube question

[Roy Morgan]

On Jul 15, 2009, at 11:51 PM, odyslim at comcast.net wrote:

> Hi Gang,
>
> I have run across an Victoreen 300-8 ballast. It looks just like the  
> 3TF7
> does anybody know if it will work?

It's unlikely.  See if the cold resistance is the same or similar.  If  
not, your chances of it working are slim.  There are to my  knowledge  
only two designations of ballast tubes that work in the R-390A, the  
3TF7 and this one:

Amperite PN: TJ311M01,
NSN 5905-00-681-4707;
DC, Current Range 0.31 to 0.33 Amperes, 8.0 Volts
Threshold,  9-Pin Miniature with T-6-1/2 envelope.


> Also found some Western Electric 6140's. Does anybody know what they  
> cross reference to?

No info here.  The WE corporate web site tube specifications page does  
list the WE6167 but we must assume that is a quite different thing:
http://westernelectric.com/support/we_spec_sheets.html
The 6167 is a ten digit gas counting tube.

Roy

Roy Morgan
k1lky at earthlink.net
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Groton NY, 13073
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