Thread: Dumont 304 scopes
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Old 02-15-2014, 05:01 PM
bob91343 bob91343 is offline
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Join Date: Nov 2010
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I think I still have Dumont 401/401A manuals. I used to own a 401R.

There were two versions, one with 'Sola' type power supply and the other with electronically regulated supply.
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