[Hallicrafters] When do you replace tubes?

[Mark Bell]

Bill --

When a tube is in the yellow,  that's the indicator for me to get another
one, which is typically at the next fester.   If and when the tube is
replaced, the "yellow" one goes in the bag of "marginal" tubes.
"Marginal" tubes may work very well in other applications, and are a VERY
handy when a tube goes and you don't have a "good" spare handy!

I have serveral "marginal" tubes in my HQ-129-X, and it plays fine.

Also, it depends upon the function of the tube.  If it's (for example), a
high voltage rectifier, that will get replaced pretty fast.

Tubes that are "bad" (in the red) get executed by the kids with the BB
gun....

Mark K3MSB

----- Original Message ----- 
From: "Bill Gerhold" <k2wh at optonline.net>
To: "'Jim Brannigan'" <jbrannig at optonline.net>; "'Waldo Magnuson'"
<magnuson at mac.com>; <hallicrafters at mailman.qth.net>
Cc: "'Waldo Magnuson'" <magnuson at mac.com>
Sent: Tuesday, January 04, 2005 6:32 PM
Subject: RE: [Hallicrafters] When do you replace tubes?


> When testing tubes, if it tests in the yellow on my B&K 650,
> it is in the garbage.  Breaks my heart though.  First time I threw out
> a tube I actually hesitated.  I thought it still might be good for
> something.
>
> K2WH