[Hallicrafters] Tube testers

[Glen Zook]

The best tube checker in the world is the unit itself!  Over the decades, I have found numerous tubes that check "good" on a tube tester that absolutely would not work in the unit and numerous tubes that check "bad" in a tube tester that worked fine in the unit.

The problem is that a normal tube tester only tests tubes under very narrow parameters.

I remember reading, back in the 1950s, about a tube tester that, I believe, General Electric had made to test tubes under numerous conditions which the tube could experience in actual use.  The quoted price tag was close to $3,000,000 and that was in 1950s dollars!

Personally, I have at least 4-different tube testers including a Hickok 6000.  The 6000 actually has 2-different plugin sets of tube sockets and 2-different roll charts which allow testing of tubes from 01A to compactrons.  However, I seldom use any of those tube testers and usually just substitute tubes in the actual unit.
 
Glen, K9STH


Website:  http://k9sth.com