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221 ; Detrola; Detroit MI (ID = 1296384) Radio
221 ; Detrola; Detroit MI (ID = 1300136) Radio
221 ; Detrola; Detroit MI (ID = 2372263) Radio 221 ; Detrola; Detroit MI (ID = 2372264) Radio
221 ; Detrola; Detroit MI (ID = 2372265) Radio
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221 ; Detrola; Detroit MI (ID = 2372263) Radio
Detrola; Detroit MI: 221 [Radio] ID = 2372263 933x686
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For model 221, Detrola; Detroit (MI)
Country:  United States of America (USA)
Manufacturer / Brand:  Detrola; Detroit (MI)
Year: 1938 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 5: 6A7 6D6 6Q7G 25L6G 25Z5
Semiconductors (the count is only for transistors) BK49BG
Main principle Superheterodyne (common); ZF/IF 456 kHz; 2 AF stage(s)
Tuned circuits 5 AM circuit(s)
Wave bands Broadcast and Short Wave (SW).
Power type and voltage AC/DC-set / 105-125 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
Power out
from Model: 221 - Detrola; Detroit MI
Material Wooden case
Shape Tablemodel with Push Buttons.
Notes BC (540-1720 kHz) and SW (2300-6250 kHZ) bands. BK49BG is a ballast tube.
Mentioned in Rider's Perpetual, Volume 9 = 1938 and before (Rider's 9, Detrola section, page 11)

Model page created by Robin Roeckers. See "Data change" for further contributors.

All listed radios etc. from Detrola; Detroit (MI)
Here you find 322 models, 182 with images and 281 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.