2. tech-talk
  3. 1438257448

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
cygnus_859 OP
20 posts
 
Hi Jim, Which setting should I use for Telefunken E88CC tube? 6922 or 5DJ8. Thank you.
jea48
4,311 posts
 
.
6922/E88CC

6922 ( Hickok 600A tube settings and Mutual Conductance readings.)
6.3 EV-7608-0 27 90 P4 6500 Triode #1. R
6.3 EV-2103-0 27 90 P4 6500 Triode #2.
Mutual Conductance/ Micromhos 6500.

>>>>>>>>

E88CC tube
6.3 EV-7608-0 27 90 P4 6500 Triode #1. F
6.3 EV-2103-0 27 90 P4 6500 Triode #2.
Mutual Conductance/ Micromhos 6500

Page 83
Consolidated Test Data
For Hickok Model 533A-600A-605A
Tube Testers

Did you figure out what the problem was with your readings?
.
Jim
cygnus_859 OP
20 posts
 
Thank you for all your replies. The problem is solved by replacing 600A with 539B. All the readings on 539B are reasonable and repeatable. I really like 539B a lot. it is much better than 600A. I think 600A may not have the high current capability to test 6DJ8/6922 type tube reliably.  
More to discover