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6DJ8 measurement error on Hickok 600A

My Hickok 600A measurement result is way off the spec of 6DJ8 tube. The tester is calibrated. I can get good consistent reading on 12ax7 tube. But i can only get ~7500 reading on 12000 tubes for 6DJ8. Anyone has the same problem on Hickok tester? Any idea how to solve it? Thank you in advance.
cygnus_859
jea48
2,944 posts
 
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600A manual

I have a Kickok 6000A. For a 6DJ8 the roll chart shows 7000 Mutual Conductance / MICROMHOS.

For a 12AX7 the roll chart shows 1250 MICROMHOS.
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jea48
2,944 posts
 
.
Consolidated Test Data
For Hickok Model 533A-600A-605A
Tube Testers

Page 55
6DJ8
6.3 EV-7608-0 24 92 P4 9250 Triode #1.
..... EV-2103-0 24 92 P4 9250 Triode #2.
Mutual Conductance/ Micromhos, 9250

Where are you setting the English for the Mutual Conductance/ Micromhos test? The red dot near 92? Then use/read the 15000 scale?
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cygnus_859 OP
16 posts
 
Thank your for your reply Jea48. I did set the tester as you mentioned. I still get about 7000 reading on new tubes (should be around 9250).
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