• Country
• United States of America (USA)

• Manufacturer / Brand
• Motorola Inc. (ex Galvin Mfg.Co. Chicago); Schaumburg (IL)

• Year
• 1955 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 81765

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

• Number of Tubes
• 5

• Valves / Tubes
• 1T4 1R5 1U4 1U5 3V4

• Main principle
• Superhet with RF-stage; ZF/IF 455 kHz

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Line / Batteries (any type) / AC/DC 110-120 / 9 & 90 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4 inch = 10.2 cm

• Material
• Metal case

• from Radiomuseum.org
• Model: Roto-Tenna 600 66L1 Ch= HS-515 - Motorola Inc. ex Galvin Mfg.Co

• Shape
• Portable set > 8 inch (also usable without mains)

• Notes

• Selenium Rectifier. Sams photofact set 338 folder 7 date 11-56 featueres the Motorola models 66L1 and 66L2 as the same schematic. See here about Tinkertoy technique. The Beitman R-18 shows the following models with the chassis HS-559: 5P31A, 5P32C, 5P32E, 5P32R and 5P32Y but also 5P33EW, 5P33VW and 5P33W for chassis HS-561. See also 66L1 and 66L2 with Tinkertoy technique.

• Circuit diagram reference
• Beitman Radio Diagrams Vol. 16, 1956

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Set 338 folder 7 date 11-56)

• Author
• Model page created by Egon Penker. See "Data change" for further contributors.

• Other Models

• Here you find 4596 models, 2962 with images and 4095 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Motorola Inc. (ex Galvin Mfg.Co. Chicago); Schaumburg (IL)