Thread: Width & Focus in DuMont RA-103
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Old 10-29-2009, 07:24 PM
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jr_tech jr_tech is offline
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Perhaps 12QP4, RP4, UP4, ZP4 ...? I don't know,but all of these 12" types are shown in my old (don't see a date...early 60s?) GE tube manual, as requiring only a single magnet.

jr
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