[R-390] OT: Low-voltage tubes

[Barry Hauser]

Yeah, like those Pensylvania farmers got peeved when that black goop oozed
out of the ground when they tried to plow.

Then there's those stoopid 3 volt tubes with just a long filament in them
and nothing else. Not to mention those matched pair Mullard 6V6's -- pain in
the neck if you just need one tube.

Usually about $40-45 is right for an NOS 1L6, somewhat less for a good used
one.

You wouldn't happen to have some crappy 50A1's in that box of yours?
They're one of them toobs with just a filament -- not much good for anything
at all.  I'd be happy to safely dispose of them for you.  ;-)

Barry (non-Williams)

PS -- we might risk suffering an identity crisis if we keep signing off in
terms of who we aren't.  Or am I? Huh?  What?  Shaddup!  (y'see).


----- Original Message -----
From: "bw" <ba.williams@charter.net>
To: "R390 (E-mail)" <R-390@mailman.qth.net>
Sent: Friday, August 15, 2003 8:21 PM
Subject: Re: [R-390] OT: Low-voltage tubes


> Which Barry?
>
> Forty bucks you say? I think I have a lot of those around here. I keep
> tossing the under 6 volt tubes in boxes for cataloging one day. I seem to
> remember being peeved at so many 1L6s in a big box of free tubes.
>
>
> Barry non-Hauser
>
>
> > Barry,
> >
> > Beware:
> >
> > 1) The 1L6 is worth forty bucks if it is working.
> >
> > 2) IF you have an open filament in one tube, AND you run the radio on
the
> > power line, AND you then plug in a good tube, ALL The tube filaments
will
> > BLOW OUT.   This is because the filament filter cap has charged up to a
> > high voltage and will apply excessive voltage to the whole string when
you
> > plug in the last non-open tube.
> >
> >>  I put them in my tester and did not notice any glow
> >> but without the glow, some still tested okay.
> >
> > The total filament power is extremely low.  Do your testing in the dark
and
> > use a magnifying glass to see the glow.
> >
> > Roy
>
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