Metal anodes were produced by Eimac and China.
Graphite anodes were/are produced by Eimac, Amperex, Philps, and China.
Carl
KM1H
----- Original Message -----
From: "Paul Baldock" <paul@paulbaldock.com>
To: "'Amps reflector'" <amps@contesting.com>
Sent: Monday, May 27, 2013 10:05 PM
Subject: [Amps] Different 3-500Z amplifiers
I have 2 amps with 3-500Zs. The 3-500Z's have Eimac labeling. The
anode of these has vertical fins.
I just acquired another amp with 3-500Zs. These tubes have no
lebeling and have an anode with a horizontal disks.
Could somebody educate me on the operational difference if any of
these 2 very different looking 3-500Z's?
Thanks
- Paul
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