• Country
• United States of America (USA)

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

• Year
• 1934 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 32376

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

• Number of Tubes
• 8

• Valves / Tubes
• 78 37 78 78 85 42 42 80

• Main principle
• Superheterodyne (common); ZF/IF 465 kHz

• Wave bands
• Broadcast, Long Wave and more than two Short Wave bands.

• Power type and voltage
• Alternating Current supply (AC) / 110-127 Volt

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

• from Radiomuseum.org
• Model: F-9531 - Allied Radio Corp. Knight,

• Notes

• The Knight F-9531 receiver is an 8-tube, 5-band radio with its bands denoted by different color dial lamps.  It receives the following bands:

  Color	From	To		Band
  Orange	118	381	kHz	Long wave
  Red	528	1532	kHz	Broadcast
  Blue	1490	4380	kHz	Shortwave 1
  Green	3620	11840	kHz	Shortwave 2
  White	7250	23100	kHz	Shortwave 3

  This radio was manufactured by Simplex and is electrically identical to the Simplex W All Wave.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 5 = ca. 1934 and before

• 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)