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Old 28th October 2002, 02:20 PM   #1
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Default Sylvania 2A3W (5930)

(2) NIB Sylvania 2A3W triodes.
$100.00 + shipping

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Old 31st October 2002, 03:25 PM   #2
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i am puzzled by the designation 'W'.what does it represent? any pics to show?
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Old 3rd November 2002, 12:44 PM   #3
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Default W

Hi,

With tubes the W designator stand for "ruggedized".
So this tube is mechanically reinforced to make it less prone to shock and such.
These were often the types used by the military.

Some types also had designators such as WA,WB,WC indicating further improvements in this field.
e.g. 6080,6080WA,6080WB,6080WC.

Another designator often found on NOS tubes is JAN which stands for Joined Army and Navy.

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