29 Aug
2008
29 Aug
'08
12:26 p.m.
In particular, the tube socket. Not as bad as the
phenolic based
tubes, but still a factor.
Yes, but even the wiring. Looking at a Burroughs module, I see they
liked to run the signal wires right up against the metal chassis of
the module.
In early HF work, you'd see tubes with
the base removed or with hacksaw slots in the base between pins--and
connections soldered directly to the pins.
Cheap ass hams (that is, 90 percent of them) would run a 10 WAY beyond
what they were made to do, so they cut the sockets (and tube bases) so
they would not burn up due to high voltages. Sometimes you can find a
10 (or other triode) that has not been cut, yet the plastic of the
base is all bubbly from the leakage.
You could find this with some 1960 audio tubes as well, where the amp
maker pushed too hard.
--
Will