Yes and no. ITT auto-gated image tubes use K&M power supplies and the auto-gated supplies can be identified by the product code. Failing that, auto-gated tubes have been known to give off an audible whine. This whine is caused from the vibration of the Micro-channel Plate. However, the Omni VI contract calls for a high light resolution minimum of 36 line pairs per millimeter, and that is the important thing. I have both ITT and Litton Omni VI tubes and only the ITT tube whines. Performance of both tubes is identical in low and high light conditions. So, if you in fact have a Omni VI tube then don’t get hung up on the “auto-gated” moniker as high light performance is what really matters not if the tube whines.
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