[R-390] Re: Caps and more caps

[N4BUQ at aol.com]

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.
>> >
>> >
>>
>>
>> -----------------------------------------------
>> Scanned by Bayou Internet for all known viruses.
>> http://www.bayou.com
>>
>
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