• Country
• United States of America (USA)

• Manufacturer / Brand
• International Radio Corp (Kadette); Ann Arbor, MI.

• Year
• 1938

• Category
• Pre-stage (adaptor for SW/FM/VHF/UHF incl. built-in), Frequency converter

• Radiomuseum.org ID
• 44979

• • alternative name: International All Wave || International Industries || International Kadette || IRC

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

• Number of Tubes
• 4

• Valves / Tubes
• 6K8 6K7 6B8 25Z6

• Number of Transistors

• Semiconductors
• K72B

• Main principle
• Superheterodyne (common); ZF/IF 1570 kHz

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• AC/DC-set / 110-125 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Kadette KRC-2 Tunemaster - International Radio Corp

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

• Notes

• Ballast tube K72B. This set is not a conventional receiver, it has no Detector (except AGC), Audio amplifier, or Speaker. Radio stations are converted to an IF frequency within the Broadcast band. This IF signal is amplified & radiated (transmitted) from the set. Other radios nearby are tuned to this frequency & reproduce the station selected by the Tunemaster. The set has 4 pre-set station selector buttons plus a tuning knob with scale.

• Price in first year of sale
• 25.00 $

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 10 = 1939 and before

• Mentioned in
• Table Top Radios Vol. 1 Stein 98

• Literature/Schematics (1)
• Machine Age to Jet Age III

• Other Models

• Here you find 194 models, 89 with images and 148 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from International Radio Corp (Kadette); Ann Arbor, MI.