If you build a test rig and sample the DC voltage on the cathodes, that will give you an indication of current flow. It may be of use to vary the control grid voltage and anode voltage. Using a 1M resistor feeding the control grid will allow you to determine the grid current.
I think you have answered your own question.
If you want to match gain you should match gain.
Indeed... I guess my question should have been:
Will matched plate current or matched transconductance be a better indicator of matched gain?
JLH said:Best way to match them is to throw all of them into the same trash can.
So, you aren't a fan of this tube?
wouldn't the best way to match two tubes be with a curve tracer?
Indeed! One day I want to buy and build the uTracer to match tubes.
The uTracer, a miniature Tube Tester / Curve Tracer.
Indeed... I guess my question should have been:
Will matched plate current or matched transconductance be a better indicator of matched gain?
...
Transconductance is gain...that was my point.
So, you aren't a fan of this tube?
No, I'm not a fan.
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