Can any one advise me where I can obtain a schematic or manual for a Dumont Osc. model 109 also listed as:
AN/USM 281 D.

:Can any one advise me where I can obtain a schematic or manual for a Dumont Osc. model 109 also listed as:
:AN/USM 281 D.

Hello Bud,

You may want to check with Fair Radio Sales, 2395 St. Johns Road, Lima, Ohio 45802; PH.(419) 223-2196 or on their web site http://www.fairradio.com specifically http://www.fairradio.com/manual.htm. Fair Radio lists a manual with schematic there for a AN/USM-281D. It is possibly a reproduction.

Radiodoc