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Earl 31 AC

Earl 31; Freshman Co. Inc., (ID = 811694) Radio
Earl 31; Freshman Co. Inc., (ID = 1085743) Radio
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Earl 31; Freshman Co. Inc., (ID = 811694) Radio
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Country:  United States of America (USA)
Manufacturer / Brand:  Freshman Co. Inc., Chas.., (Polydyne); New York
Year: 1929 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 8: 227 227 227 227 227 245 245 280
Main principle TRF without regeneration; Neutrodyne
Tuned circuits 4 AM circuit(s)
Wave bands Broadcast only (MW).
Power type and voltage Alternating Current supply (AC) / 115 Volt
Loudspeaker -Loudspeaker incorporated, but system not known.
Power out
from Model: Earl 31 [AC] - Freshman Co. Inc., Chas..,
Material Wooden case
Shape Console with any shape - in general
Notes One dial (primary tuning control knob); Push-pull af output; Phono input.
Price in first year of sale 144.00 $
Collectors' prices  
External source of data Ernst Erb
Source of data Radio Collector`s Guide 1921-1932
Circuit diagram reference Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
Mentioned in The Radio Collector's Directory and Price Guide 1921 - 1965
Literature/Schematics (1) Rider's Perpetual, Volume 2 = 1932 and before
Literature/Schematics (2) Collector's Guide to Antique Radios (7th Edition)

All listed radios etc. from Freshman Co. Inc., Chas.., (Polydyne); New York
Here you find 129 models, 71 with images and 41 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.