40th week of 1982.
If they have never been fired up, they MAY be gassey. I just removed a pair
from a TL922 that were new in the box. On was gassy at less than 500 volts.
I'm not at home so I cant get you the date codes.
There was a run of them in the 80s that had the welds break where the cone
that holds the plate on the stem would break lose from the plate itself and
flop loose inside the tube.
I'm not sure of their date codes that had this problem.
73
Jim W7RY
-----Original Message-----
From: Vic Rosenthal K2VCO
Sent: Tuesday, April 29, 2014 4:23 PM
To: Amps reflector
Subject: [Amps] Eimac 3-500Z date codes
I know this information has appeared here, but I haven't been able to
find it. Which are the "bad" Eimac 3-500Z date codes?
I have a pair that appear to be unused that have the code 8240. Does
this mean they were manufactured on the 40th day of 1982?
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/
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