[NJARC] Testing VT-4c 211 tubes

Thu, 04 Sep 2003 20:37:20 -0400

I don't think so.  The 211 has a 10 volt 3.25 amp filament.  Best check 
of filaments is to light them up at rated voltage, AC or DC.  If they 
glow properly and do not burn out you're probably OK.  If they light for 
an instant and then burn out it's probable that the tube has "gone to 
air" or lost its vacuum in which case it would never be any good.
Ray

[email protected] wrote:

> Mario,
> You can just check for continuity. I believe the filiments are DIAGONAL to 
> one another. no other pins should show contiuity. One "D" sized flashlight cell 
> should light it dimly. I believe it is a 2.5 volt tube.
> Marty 
> 
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