Royal Sovereign RA-119A

• Country
• United States of America (USA)

• Manufacturer / Brand
• DuMont Labs, Allen B., Inc.

• Year
• 1951 ?

• Category
• Television- and Radio Receiver, perh. also + Rec. etc. (TV Radio)

• Radiomuseum.org ID
• 169647

• • alternative name: Dumont Television & Radio

• Picture
• Schematics

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Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 45

• Valves / Tubes
• 6J6 6BC5 6AB4 6AU6 6AU6 6AU6 6BC5 6AL5 6BA6 6AQ5 6SN7GT 6AU6 6AU6 6AU6 6AL5 12AU7 6V6GT 6AL7GT 6BA6 6AL5 6AU6 6SN7GT 6AU5GT 6AL5 6BC5 6AK6 6BG6G 6BG6G 5U4G 5U4G 5U4G 6SN7GT 6BG6G 6BG6G 6W6GT 6SJ7 0A3 1B3GT 1B3GT 6AL5 6SN7GT 6AL5 5U4G 5U4G 30BP4

• Main principle
• Superhet with RF-stage; ZF/IF 26400/21900 kHz

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• Alternating Current supply (AC) / 60 Hz, 117V = 110 -120 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 10 inch = 25.4 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: Royal Sovereign RA-119A - DuMont Labs, Allen B., Inc.

• Shape
• Console with any shape - in general

• Dimensions (WHD)
• 50 x 48 x 27.5 inch / 1270 x 1219 x 699 mm

• Notes

• The Dumont RA-119A Royal Sovereign has a direct-view 30-inch 30BP4 CRT, giving it by far the largest screen size of its day, and making it the largest screen direct-view black and white TV ever produced. Like many early DuMont sets, it has a continuous tuning 44-217 MHz tuner which covers the VHF low, FM radio, and VHF high bands in a single range. A 6AL7GT eye tube is used as a tuning aid.
  
  The RA-119A uses a regulated pulsed RF transformer with voltage doubler to supply 22 kV to the CRT anode. The RF of the HV supply oscillates in sync with the horizontal sweep, but is otherwise independent of the sweep circuitry. Regulation (unusual in black and white sets) is accomplished by sensing the HV via a voltage divider with a 500 megohm resistor and comparing to a 75 volt 0A3 voltage reference tube. A 6SJ7 control amplifier and 6W6GT control tube are used to adjust the screen voltage on the dual 6BG6G HV pulse amplifiers that drive the HV transformer.
  
  The Royal Sovereign has a huge mahogany cabinet with doors.

• Source of data
• Photofact Folder, Howard W. SAMS

• Circuit diagram reference
• Photofact Folder, Howard W. SAMS

• Literature/Schematics (1)
• SAMS set 156 folder 5; Rider TV vol. 8-1

• Author
• Model page created by Thomas Albrecht. See "Data change" for further contributors.

• Other Models

• Here you find 305 models, 158 with images and 246 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from DuMont Labs, Allen B., Inc.