26 Apr
2005
26 Apr
'05
4:49 p.m.
I also have a Phillips/Mullard and Eimac manuals. I
should have used
numbers more common there. I see both here so it's no big deal. For
Don't worry about it. I have a small equivalents book to hand, I have
several valve databooks, and the manual for my valve tester (an AVO Mk 4
characteristic meter...). The US numbers are no problem for me. But the
Philips numbers do give rahter more information without having to look
them up.
Sure. My warning, again, was based on the fact
that you're likely to get
inside the set (but as I said, I am sure you realised the dangers anyhow).
The dangers are less here with 117V nominal mains. However I've been at this racket for over 35 years. It's usually me
telling others to
be careful and lockout/tagout.
Please don't think I was questioning your knowledge and experience. If
you feel I was, then I apologise now. You have considerably more
knowledge and experienmce than me.
You doubtless realised from that valve line-up that it was likely to be a
live chassis. And you have the advantage of being able to see the set and
notice there is no mains transformer [1].
However, there are plenty of other people reading this list, who might
come across similar sets. I would hope they might now realise that the
chassis could be live.
[1] The presence of a mains transformer in a valve radio does not imply an
isolated chassis!. It was not unhead-of for the transformer to be to
supply the heaters only, with the HT coming by half-wave rectifying the
mains, thus giving a live chassis. Some UK sets even had the heaters in
series, runn from the mains via an autotransformer...
-tony