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Author Topic: 813 gettering?  (Read 1755 times)
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K1ZJH
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« on: October 08, 2011, 11:28:27 PM »
Does anyone know how the old RCA graphite plate tubes were gettered?
The data sheet mentions they were "direct gettered" but I am not able
to find an explanation as to what "direct gettered" implies.
Did the gettering method change between the early graphite plates and
later metal plate 813 tube versions?

Pete
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VK7ZL
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« Reply #1 on: October 09, 2011, 04:44:45 AM »
Probably refering to directly heated getters.

This page has a full explanation of getters.
http://www.thevalvepage.com/valvetek/getter/getter.htm

Bob  VK7ZL
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