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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Hickok 600A tube tester

This is a must, if you test a lot of 12AX7’s! Sam Cogley and thorpej like this. Thank you I downloaded the manual, the unit looks clean but the case looks a bit beat but should clean up. Number of bids and bid amounts may be slightly out of date. This is the best of the basic early testers. The full military manual comes with instructions regarding the destruction of the tester using explosives, axes, or throwing it overboard, to avoid the tester coming hickkk the possession of an enemy power.

No button cover knobs are included. Hi all, Is it worth buying one 600a these, I’ve seen one and know how good they are, I’m getting more into tubes and it would be great to get one and fix it up, if possible.


Don’t buy a tester that is recommended by hearsay-like “it worked when my uncle had it” or “Ray the hickik guy said it’s fine, but I don’t know how to run it”.

Hickok 600A

Hi Tom, Are they easy to calibrate to be able to test some tubes? Models and A. If you understand how the tester works, you can come up with your own settings and just read the gm numbers and make your own assessment based on the tube’s data sheet and your tolerance for Yes, my password is: Share This Page Tweet. You must log in or sign up to reply here. The A does not have this. The is like a and has the onboard volt-ohmmeter function, and is more complicated to service and maintain.

This page was last updated: Personally,I’d just leave well enough alone It’s not like we’re doing life tests on ‘s. The “A” model has the 9 and 12 pin compactron sockets and hicook more money.

I had a A, my first tester. Sam CogleyDec 9, Do you already have an account? Most of the physical wear on this tester occurs on t Also shop in Also shop in.


These are the famous FAA testers. Data is widely available for the B, C units. Meh,there’s nothing wrong with a tube rectifier,mercury or vacuum type.

The A unit is older, and data is less available. It is used and in good shape with light wear.

Hickok A Test and Calibration

There is supplemental test data for TV-7 available online. It is basically a A on steroids. Haven’t found any official Hickok documentation on that, but there’s a fantastic thread here about it: Just off the shoulder of Orion. nickok

Check operation of all switches and tube sockets, clean and tighten as required. The model is somewhat similar to hic,ok really demands a premium price, and can be touchy to keep running. Check neon bulbs and operatio Retrovert and Sam Cogley like this.

hixkok Provide a checklist and instruct The TV reads out in umhos where the TV-7 reads on a ” quality” scale for gm. And you know what? Skip to main content.

This allows you to set bias to a measured voltage, and set the line during the gm test.