• Country
• United States of America (USA)

• Manufacturer / Brand
• Allied Radio Corp. (Knight, Roamer, Wextark); Chicago (IL)

• Year
• 1941/1942

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 32293

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

• Number of Tubes
• 6

• Valves / Tubes
• 6SK7 6SA7 6SK7 6SQ7 25L6 25Z6

• Number of Transistors

• Semiconductors
• 115-41

• Main principle
• Superhet with RF-stage; ZF/IF 456 kHz; 2 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast plus 2 Short Wave bands.

• Power type and voltage
• AC/DC-set / 110 - 120 with adapter also 220 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 5.5 inch = 14 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: Knight D-109 3 Band AC-DC - Allied Radio Corp. Knight,

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 19.5 x 10.5 x 10 inch / 495 x 267 x 254 mm

• Notes
• The Allied Knight D-109 has a cabinet in selected walnut veneers, hand-rubbed to a lustrous finish. BC = 540 - 1650 kc, SW = 5.25 - 10.25 mc and 11.5 - 16 mc. Built-in loop antenna. Allied and we do not count the ballast tube 115-41. Value $ 38.95 but Allied price is $ 21.95 (20.95 if lot of 3).

• Price in first year of sale
• 22.00 $

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 14 = 1944 = before 1943

• Literature/Schematics (1)
• Allied Radio Catalog (Knight) (Allied Catalog 1942, page 6.)

• Other Models

• Here you find 1035 models, 638 with images and 680 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Allied Radio Corp. (Knight, Roamer, Wextark); Chicago (IL)