• Country
• United States of America (USA)

• Manufacturer / Brand
• Champion Radio Labs (Champion Radio Mfg.); Lakewood, OH

• Year
• 1935 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 35194

• • Brand: Monarch

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

• Number of Tubes
• 4

• Valves / Tubes
• 6D6 6C6 43 25Z5

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown)

• Tuned circuits
• 2 AM circuit(s)

• Wave bands
• Broadcast (MW), Police, sometimes also early TV (75-200m).

• Power type and voltage
• AC/DC-set / 110 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Monarch 4 Tube ACDC - Champion Radio Labs Champion

• Shape
• Tablemodel without push buttons, Mantel/Midget/Compact up to 14

• Dimensions (WHD)
• 290 x 210 x 160 mm / 11.4 x 8.3 x 6.3 inch

• Notes
• Champion Monarch 4 Tube ACDC Radio;
  Featuring: Scale illumination, coverage:
  Tropic/Police band: 75 - 175 m (1.7 - 4.0 MHz) & 175 - 550 m/545 KHz - 1714 KHz AM-MW broadcast band,
  for use of AC alternative current [actually as it's usual] as well as DC direct current mains power [as usually partly up to the 1950's]).
  As taken from the RM.org threat "Police Radio":
  The most popular (Police) bands were around 1.6 MHz and 2.4 MHz. These frequencies can be found on radio scales and dials all over the 1930's and even later. The entire band between BC and real SW therefore got the name Police Band.

• Net weight (2.2 lb = 1 kg)
• 3.5 kg / 7 lb 11.3 oz (7.709 lb)

• External source of data
• Ernst Erb

• Source of data
• - - Data from my own collection

• Circuit diagram reference
• Rider's Perpetual, Volume 7 = 1936 and before

• Other Models

• Here you find 64 models, 15 with images and 45 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Champion Radio Labs (Champion Radio Mfg.); Lakewood, OH