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Old 30th March 2011, 05:16 PM   #1
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Join Date: Feb 2011
Default Jan Tube question

I obtained a box of tubes, most of which are from TVs, I think.
A couple of them though have the same identification as the 5U4G rectifier
tube used in the Scott 222.
they are: Jan-CKR-5U4G 'Ken-Rad VT-244'
They are twice as big or tall though as the one in the scott
Can they be used as a substitute?

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Old 30th March 2011, 07:13 PM   #2
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Location: So.Cal.
According to Duncan's TDSL data the VT-244 is close or identical to a 5U4, so yes......

A 5U4-G is a 5U4...

TDSL Tube data [VT244]
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Old 30th March 2011, 08:26 PM   #3
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The JAN stands for Joint Army Navy; it's a tightened mil spec version.

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Old 31st March 2011, 12:16 AM   #4
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Join Date: Feb 2011
Thank you all.
I'll try out the 'better' specs tube,
see how it lights up!
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