Quote:
Originally Posted by earlyfilm
My theory is the constant CRT heat enabled the getter to do its job better.
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My understanding is that the getter does nothing after its first firing. I think what you were seeing is the cathodes being kept cleaner. In the early Saticon tube HDTV cameras, we were advised to run the camera for a few hours at least once every 6 months to counter the effects of residual gas in the tubes. Whatever reaction was happening I believe was at the cathodes themselves.