11 Aug
2014
11 Aug
'14
10:05 p.m.
On 08/11/2014 08:52 PM, William Donzelli wrote:
http://www.hupse.eu/radio/tubes/6M6.htm
Where the Europeans decided to jump in on the US numbering scheme. Even
with G and GT versions.
The little "x" was meant as a wildcard.
Or take the
6x6 tubes. 6K6 and 6L6 are beam-power "pentodes" with the
beam-forming electrodes internally tied to the cathode. Likewise for the
6M6 (which, in spite of the name, is a glass-envelope tube).
Bad example, or a typo? 6M6 is an unregistered type. (So is 6X6, but I
assume your little x is a wildcard). Yes. It is not hard when the guys worked with them day
by day. And if
they did not have the number-function thing memorized, they probably
should not be fucking with the circuit in the first place.
And it was very localized. I have no idea what I'dve done if I ran
across a receiver using, a say, UA55, though it may not have seemed too
unusual to a guy from the UK.
--Chuck