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649 ; DeWald Radio Mfg. (ID = 310337) Radio
649 ; DeWald Radio Mfg. (ID = 2284336) Radio 649 ; DeWald Radio Mfg. (ID = 2284344) Radio
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649 ; DeWald Radio Mfg. (ID = 2284336) Radio
DeWald Radio Mfg.: 649 [Radio] ID = 2284336 1280x955
Select picture or schematic to display from thumbnails on the right and click for download.
For model 649, DeWald Radio Mfg. Corp., Pierce Airo Inc.
Country:  United States of America (USA)
Manufacturer / Brand:  DeWald Radio Mfg. Corp., Pierce Airo Inc.
Pierce Airo
Year: 1939 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 6: 6A7 76 6D6 6Q7G 41 84
Main principle Superheterodyne (common); ZF/IF 456 kHz; 2 AF stage(s)
Tuned circuits 6 AM circuit(s)
Wave bands Broadcast and Short Wave (SW).
Power type and voltage Alternating Current supply (AC) / 117 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
Power out
from Model: 649 - DeWald Radio Mfg. Corp.,
Material Wooden case
Shape Tablemodel with Push Buttons.
Notes BC (540-1725kHz) and SW (6.0-18.5MHz) bands. Separate oscillator tube (76).
External source of data Ernst Erb
Source of data Collector's Guide to Antique Radios 4. Edition
Circuit diagram reference Rider's Perpetual, Volume 9 = 1938 and before
Mentioned in The Radio Collector's Directory and Price Guide 1921 - 1965
Literature/Schematics (1) Table Top Radios Vol. 4 Stein 2003

All listed radios etc. from DeWald Radio Mfg. Corp., Pierce Airo Inc.
Here you find 424 models, 191 with images and 327 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.