[Hallicrafters] Re: Testing tubes

[Duane Fischer, W8DBF]

Glen, 	
	
Perhaps you could enlighten some who are not familiar with the different types
of tube testers the advantages and disadvantages of an emission tester Vs a
mutual conductance tester. 	
	
Tnx Glen for your pearls of wisdom. or should it be drops of solder? Hmmm.  	
	
DBF 	
 

----------
From: Glen Zook <gzook at yahoo.com>
To: Neil Barnett <neilba at clear.net.nz>; hallicrafters at mailman.qth.net
Subject: Re: [Hallicrafters] Re: Testing tubes
Date: Tuesday, September 30, 2003 11:20 AM

There are some tubes that have a deliberate cathode to
heater connection within the envelope.  However, they
certainly are in the minority.  It is pretty unlikely
that all of the tubes have such a short unless all are
of the type that were manufactured as such.

Glen, K9STH


--- Neil Barnett <neilba at clear.net.nz> wrote:

I suspect that the faulty tubes all have heater to
cathode shorts, and you are seeing heater current flow
into the cathode circuitry of the tester.

=====
Glen, K9STH

Web sites

http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco

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