[R-390] Re: Caps and more caps

[Dallas Lankford]

What you and Walter have said violates the laws of statistics.  That is why
I say I don't believe you.

Are you and Walter friends?

Dr. Dallas Lankford
retired Professor of Mathematics and Statistics
Louisiana Tech University

----- Original Message -----
From: <N4BUQ at aol.com>
To: <r-390 at mailman.qth.net>
Sent: Wednesday, January 12, 2005 7:29 AM
Subject: Re: [R-390] Re: Caps and more caps


> Again, I can only concur with Walter.  A large percentage of the "brown
beauties" in my '56 Motorola had cracks that could easily be seen.  I don't
think mine was abused, but just old.
>
> Barry(III) - N4BUQ
>
> >Walter,
> >
> >I do not believe you. The laws of statistics say that if 7out of 10 brown
> >beauties were cracked (as you claim), then my friend and I would have
> >observed several hundred cracked brown beauties. The odds of us seeing
none
> >(which is what we saw) are way beyond 1 in a trillion.
> >
> >Dr. Dallas Lankford
> >retired Professor of Mathematics and Statistics
> >Louisiana Tech University
> >
> >----- Original Message -----
> >From: "Walter Wilson" <wewilson at knology.net>
> >To: "Dallas Lankford" <dallas at bayou.com>; <R-390 at mailman.qth.net>
> >Sent: Wednesday, January 12, 2005 5:04 AM
> >Subject: Re: [R-390] Re: Caps and more caps
> >
> >
> >> Dallas,
> >> I keep a bag of old capacitors that I've removed from R-390As. I
> >> randomly pulled 10 of the brown tubular ones out of the sack this
> >> morning. I counted 7 of those with cracks. While it is certainly true
> >> that not all capacitors need to be replaced, I'd err on the side of
> >> replacing too many than too few, especially if it is filled with the
> >> brown tubulars.
> >>
> >> Walter Wilson - KK4DF
> >>
> >> Dallas Lankford wrote:
> >>
> >> >Perhaps you are shopping at the wrong R-390A store, but it is far more
> >> >likely that you are mistaken. I have carefully inspected and rebuilt
> >> >between 10 and 20 R-390A's, and a good friend of mine has carefully
> >> >inspected and rebuilt well over 100. Neither of us have ever found a
bad
> >> >(cracked or otherwise) brown encapsulated paper capacitor in an
R-390A.
> >> >
> >> >
> >>
> >>
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