Back in the late 60's IBM was almost brought to its knees by a problem with
silver migration (whiskers) in its flat cable connectors. This happened
primarily in their System 360 Models 50 and 65 mainframes. It cost the
company many millions of dollars because every Model 50 and 65 plus some
others had to have every flat cable replaced. Each machine had a LOT of
cables, I can't even guess how many. It took teams of 5 people working
around the clock 2 days to recable a Model 50. Them were the good old days.
The Model 50 made me a lot of money over the years. 73
John [K7SVV]
----- Original Message -----
From: "Ken Kopp" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Sunday, April 06, 2008 8:28 AM
Subject: [Elecraft] OT - Tin whiskers
These conductive "growths" from metal plating were a -severe- problem for
early versions of GE 2-way radio's MASTR II (sic) series of radios. The
plated cavities that held the tuned circuits for the RF front ends grew
almost invisible whiskers off the walls of the housing that were
astoundingly strong.
73! Ken Kopp - K0PP
[EMAIL PROTECTED]
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