11 Aug
2014
11 Aug
'14
9:03 p.m.
Well, the CKxxx number are Raytheon, which appear to
have very little
rhyme or reason to them--heck, they even cover transistors (CK722).
The Raytheon CK (and QK and RK) series do not fall under the RMA
registration scheme.
Which reminds me--there was a gas-filled half-wave
rectifier called the
0Y3 (it was distinguished by an extra "starter" electrode).
0Y4? I do not think there was an 0Y3. There was an 0Z3, which was an
interesting commercial bomb, but somewhat important.
Yup, the miniature version of the 2050. I was thinking
of the 2E26 -
sort of a low-power 6146.
These are not part of the RMA system - or at least the RMA receiving
tube system. They are from a short lived RMA system for special
purpose and transmitting types, from 1940. Short lived...or long lived
- it is still around today, with all those pesky 1Nxxxx diodes and
2Nxxxx transistors.
Certainly, as it supplanted the even more confusing
2/3 digit system
(the RCA UX-nnn system), which told you nothing about what the tube was
supposed to do. Contrast, say, a 12 with a 12A. Transmitting tubes
never did get systematic religion.
See my previous post. Complaining about the flawed US tube numbering
system is like shouting at a barrel of fish.
--
Will