- February 8, 2018 at 4:09 pm #9897
Robert CassidyCVRS Member
I need to test two Rogers Majestic radio tubes, 6B6M and a 6K6M if anyone could help me with the code, I would appreciate the information. I have a Stark 9-66 tube tester.
Thanks Bob Cassidy
February 9, 2018 at 2:58 am #9900
- This topic was modified 11 months, 1 week ago by Robert Cassidy.
Tony FForum Participant
Bob, Justradios has a list of substitute tubes here :
Your 6K6M is the same as a regular 6K6. The “M” at the end just means “metal” for the metal spray coating that was applied to the Rogers tubes. As for the 6B6M it crosses to a 75M.
It is the same as a 6Q7 or 6Q7G
Hope this helps…
TonyFebruary 11, 2018 at 7:32 pm #9914
Don HenschelCVRS Member
Too bad you didn’t have a 9-55 otherwise I could scan and send you all of my cards. They say the 9-66 was first made in the late 40’s and given this mine is probably as old as the radios I have. Other than this I have two Heathkit tube testers with the rolled up paper you scroll through by turning knobs. I just need to find a tube tester to test these.
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