• Country
• United States of America (USA)

• Manufacturer / Brand
• Arvin, brand of Noblitt-Sparks Industries

• Year
• 1936–1938

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 33080

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

• Number of Tubes
• 6

• Valves / Tubes
• 15 6A7 15 75 76 19

• Main principle
• Superhet with RF-stage; ZF/IF 456 kHz

• Wave bands
• Broadcast, Short Wave(s) and Police.

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / 6 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 8 inch = 20.3 cm

• Power out
• 2 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 617B Rhythm Maid - Arvin, brand of Noblitt-Sparks

• Shape
• Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.

• Dimensions (WHD)
• 17 x 21.125 x 12.25 inch / 432 x 537 x 311 mm

• Notes
• Home battery radio, drain 2.9 Amperes. Synchronous Mallory Vibrator for +B. The schematic is the same for Arvin models 617B and 627B. They have three bands whitch show in different colors. The IF frequency is 456 kc. The Arvin model 617B Rhythm Maid with 7 3/16 inch dial from Noblitt-Sparks covers BC band (Green) 560 - 171 meters (535 - 1750 kc), the "tropical band" (Yellow) 176 - 52.2 meters (1700 - 5750 kc) and SW1 (Red) 54.5 - 16.65 meters (5.5 - 18 mc). One permanent magnetic dynamic speaker 8 inch. 3-gang condenser, continuous tone control. Cabinet in rich-grained walnut in combinations with pencil-striped mahogany and satin wood.
  
  Rider's shows that the chassis has been published 1936 (or before). The Belknap Hardware & Manufacturing Co. Catalog of 1937 features this model as E-617B Rhythm Maid and sets a price of $ 125.91. Pages 1053 to 1056 show a whole model family for "Rhythm". The family is in that catalog shown with a prefix E- whereas schematics and other ads show the models without this prefix. The "E" could refer to this catalog only since also a storage battery U17 or U175D is here called E-U17 and E-U175D. But we have to add the prefix so that users do find if they put it in.

• External source of data
• Ernst Erb

• Source of data
• The Radio Collector's Directory and Price Guide 1921 - 1965

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

• Other Models

• Here you find 698 models, 487 with images and 556 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Arvin, brand of Noblitt-Sparks Industries