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89K2 ; Motorola Inc. ex (ID = 510939) Radio
89K2 ; Motorola Inc. ex (ID = 510943) Radio
89K2 ; Motorola Inc. ex (ID = 510946) Radio
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89K2 ; Motorola Inc. ex (ID = 510939) Radio
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Country:  United States of America (USA)
Manufacturer / Brand:  Motorola Inc. (ex Galvin Mfg.Co. Chicago); Schaumburg (IL)
Year: 1938/1939 perfect model Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 8: 6D6 6A7 6D6 75 75 42 42 80
Main principle Superhet with RF-stage; ZF/IF 455 kHz; 2 AF stage(s)
Tuned circuits 7 AM circuit(s)
Wave bands Broadcast only (MW).
Power type and voltage Alternating Current supply (AC) / 1.25V Bias Cell and 117 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 10 inch = 25.4 cm
Power out
from Model: 89K2 - Motorola Inc. ex Galvin Mfg.Co
Material Wooden case
Shape Console with Push Buttons.

The Motorola 89K2 is an AC operated, 8 tube BC band receiver with built-in clock.  Has push button tuning with electric tuner and push-pull audio output stage. Also has 1.25V bias cell.

The following models make up the 89K and 109K family of radio's:

Model Bands RF tube Separate Osc tube 2nd AF tube Remote Control Number of tubes Speaker
89K1 BC Yes No No No 8 10"
89K2 BC Yes No No Yes 8 10"
89K3 BC, SW No Yes No No 8 10"
109K1 BC, Police, SW Yes Yes Yes No 10 12"
109K2 BC, Police, SW Yes Yes Yes No 10 12"
External source of data Ernst Erb
Literature/Schematics (1) Rider's Perpetual, Volume 9 = 1938 and before (Galvin Mfg section, pages 30 to 34)
Literature/Schematics (2) Beitman Radio Diagrams, Vol. 02, 1939 (Page 48)
Literature/Schematics (3) - - Manufacturers Literature (Motorola Home and Car Radio Combined Service Manuals 1930 to 1942 pages 441 to 448)

All listed radios etc. from Motorola Inc. (ex Galvin Mfg.Co. Chicago); Schaumburg (IL)
Here you find 4109 models, 2818 with images and 3747 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.