• Country
• United States of America (USA)

• Manufacturer / Brand
• Karola Corp. (Radio & Television Products Co.); Minneapolis, MN

• Year
• 1947 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 52375

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

• Number of Tubes
• 6

• Valves / Tubes
• 12BA6 12BE6 12BA6 12AT6 50B5 35W4

• Main principle
• Superhet with RF-stage; 2 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast only (MW).

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

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 6.25 inch = 15.9 cm

• Material
• Various materials

• from Radiomuseum.org
• Model: 47-601 [standard model ] - Karola Corp. Radio &

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

• Dimensions (WHD)
• 13 x 9 x 8.25 inch / 330 x 229 x 210 mm

• Notes

• Schematic is in Riders Perpetual Troubleshooters Manual volume 19, in the Misc. Section at the back of the volume, under Radio & Telev. Products Co. (Karola). This schematic shows the standard model 47-601, with dotted lines showing the optional time clock for the 'Hotel Set' variation.

• Circuit diagram reference
• Rider's Perpetual, Volume 19 = 1949 and before

• Author
• Model page created by Peter Rutishauser. See "Data change" for further contributors.

• Other Models

• Here you find 7 models, 5 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Karola Corp. (Radio & Television Products Co.); Minneapolis, MN