Virtually all the "Hunt" branded capacitors in the Racal RA-17 series failed. I
guess you call if the British version of the Black/Grey ladies of death that were in lots
of different receivers, but mainly Hammarlund SP-600's.
Les
----- Original Message -----
From: Jim Whartenby via R-390 <[email protected]>
Reply-To: Jim Whartenby <[email protected]>
To: R-390 Mailing List <[email protected]>
Sent: 7/5/2024 1:40:15 AM
Subject: Re: [R-390] Paper on failure modes of mica capacitors (historical)
________________________________________________________________________________
This paper is from Great Britain. I am not sure that they manufactured
capacitors with the same materials and technique that the U.S. manufacturers
used. When the Cold War was heating up in the early 1950's all of the U.S. component specs were rewritten to insure the best manufacturing practice for increased reliability. I am not sure what happened on the other side of the "pond" in this respect. It seems to me that the vast majority of the component issues were solved in the U.S. by the mid to late 1950s which was when this paper was published.
Perhaps some of our fellow R-390 owners in Great Britain can comment?Regards,Jim
Logic: Method used to arrive at the wrong conclusion, with confidence. Murphy
On Thursday, July 4, 2024 at 04:06:45 PM CDT, jkharvie via R-390 <r-
[email protected]> wrote:
As attached
cheers
John N3JKE
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