This article discusses repair and calibration of the Hickok 6000 tube tester. Models 6000A and 6005 are the same with only minor feature differences that are not relevant to tube test calibration, therefore the discussion is applicable to those models as well. Serious electrical voltages are present, repairs should only be attempted by a qualified […]
Hickok 6000 calibration Read More »
Today was my annual warehouse spring cleaning day, so it was a good opportunity to take a “family photo” of my tube tester collection. My collection changes all the time, sometimes daily. I did include all of the models that I use everyday for tube sales and bench servicing, and also models that I “rotate
my tube tester collection Read More »
I am frequently asked to explain what all of the “letters and numbers” mean in a vacuum tube number. In the early days of radio, tube numbers were haphazardly assigned to new tube types. As more vacuum tube types were developed, it became more difficult for technicians to recognize any fundamental characteristics about a tube.
RMA Tube Numbering Code Read More »
How to Use a Tube Tester… and Tube Issues (in General) by Bob Putnak, ©2010. All rights reserved. Last update: Jan 2014. Your tube tester is often the first test instrument that you reach for when diagnosing problems in tube gear. All tube testers are a compromise in functionality, compromise in accuracy, and none are
Tube Testing & How to Use a Tube Tester Read More »
Here is a truly historical item — a LEEDS & NORTHRUP CO. Wheatstone bridge. It has Western Electric K.S.3011 designation. The craftsmanship and build quality of this device is truly remarkable. I cannot fathom how much money it would cost to build this same device today using identical components. The unit consists of a large
Leeds & Northrup bridge, and Eico 221 VTVM Read More »
