I am not saying that you should not purchase a Hickok like a or at the are compact bench top models that are basically laid out as this A above. Use this procedure to test and calibrate the Hickok Model /A mutual conductance (AKA transconductance) tube testers. Except as noted, all of the. I have a Hickok Model A tube tester that I’m learning to use. Hopefully someone here can answer a question for me. On the micromho meter.
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A recommended list of Hickok tube testers. I am not saying that you should not purchase a Hickok like a or at the right price and condition, however in the absence of other considerations, these are hicjok choices. This is the best of the basic early testers. Has sockets up to hidkok mini. No 9 or 12 pin compactron. Has switch selected micromho ranges. You are much better off with this machine than or These models are compact bench top models that are basically laid out as this A above. These units have the same socket complement as A, except for A which has 9 and 12 pin compactron, and is more expensive for that reason.
Data is widely available. The is like a and has the onboard volt-ohmmeter function, and is more complicated to service and maintain. Western Electric KS version in photo. This allows you to set bias to a measured hicjok, and set the line during the gm test. This tester will give you the most repeatable tests. The “C” model is the premium model with 9 and 12 pin compactron sockets. Data is widely available for the B, C units. The A unit is older, 600a data is less available.
The B and C units have a “VR” function to give a quantitative test on voltage regulator tubes like 0A2. The A does not have this. They are older than the B and C’s, and for this reason it is important to only buy one in good working order, but this tester has been my bench tester for over a year, and I have gotten to like it a lot.
I test a lot of early octal tubes, and they are all on the chart!
These are the famous FAA testers. The is a hickkok machine. The “A” model has the 9 and 12 pin compactron sockets and is more money. The best feature of the ‘s is the dual triode test buttons-you can test both halves of a twin triode without re-setting the selectors.
This is a must, if you test a lot of 12AX7’s! The model is somewhat similar to but hickpk demands a premium price, and can be touchy to keep running. Models and A.
These were the successors to the series. The has sockets up to 9-pin mini. 600x A does not have 4,5,7 pin older sockets, but it does have the 9 and 12 pin compactrons. These are nice compact testers and data is widely available.
TV and TV-7 Military tester. The TV is a nice compact military version Hickok. Laid out something like a A, it has switch selected gm scales and a built in roll chart.
The full military manual comes with instructions regarding the destruction of the tester using explosives, axes, 060a throwing it overboard, to avoid the tester coming into the possession of an enemy power. One can only imagine if our enemies got a hold of a TV!
Hickok A: Test Equipment | eBay
The TV-7 is very similar to TV but has flip-chart tube data in the upper lid of the unit. If you ever get to see inside of a TV-7, it is really built. All the switch decks and sockets are ceramic, and the capacitors are hermetically sealed. Top quality Government construction. The TV reads out in umhos gickok the TV-7 reads on a ” quality” scale for gm.
There is supplemental test data for TV-7 available online.
The TV-3 is a very cool tester. It is basically a A on steroids. It is classic military construction with potted 600x, ceramic sockets on the minis and octal, and hermetically sealed caps. Has switch selected gm ranges like A. AND has several Western Electric tubes types right on the chart!
A super value compared with TV and TV Don’t buy a tester that is recommended by hearsay-like “it worked when my uncle had it” or “Ray the radio guy said it’s fine, but I don’t know how to run it”. Fixer-Uppers will cost more to fix than buying a good one.
If most of the hickk are gone it means that somebody knowledgeable looked inside and decided the tester was SHOT and there was no point in bothering to put all the screws back in. Avoid like monkey plague.