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F-5-M; DeForest Radio (ID = 829277) Radio F-5-M; DeForest Radio (ID = 829271) Radio
F-5-M; DeForest Radio (ID = 829272) Radio F-5-M; DeForest Radio (ID = 829273) Radio
F-5-M; DeForest Radio (ID = 829274) Radio F-5-M; DeForest Radio (ID = 1959033) Radio
F-5-M; DeForest Radio (ID = 829275) Radio F-5-M; DeForest Radio (ID = 829276) Radio
F-5-M; DeForest Radio (ID = 1319242) Radio F-5-M; DeForest Radio (ID = 383302) Radio
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F-5-M; DeForest Radio (ID = 829277) Radio
DeForest Radio: F-5-M [Radio] ID = 829277 677x800
Select picture or schematic to display from thumbnails on the right and click for download.
For model F-5-M, DeForest Radio Telephone & Telegraph Co. (De Forest); New York:
Ebay 160486453718
Country:  United States of America (USA)
Manufacturer / Brand:  DeForest Radio Telephone & Telegraph Co. (De Forest); New York
alternative name
Lee De Forest Mfg.
Year: 1925/1926 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 5: DV2 DV2 DV2 DV5 DV5
Main principle TRF (Tuned-Radio-Frequency but use of regeneration unknown); 2 AF stage(s)
Tuned circuits 3 AM circuit(s)
Wave bands Broadcast only (MW).
Power type and voltage Storage and/or dry batteries
Loudspeaker Horn
Power out
from Model: F-5-M - DeForest Radio Telephone &
Material Wooden case
Shape Tablemodel, Box - most often with Lid (NOT slant panel).
Dimensions (WHD) 22.75 x 16.75 x 16.25 inch / 578 x 425 x 413 mm

The DeForest F-5-M is a battery operated BC band receiver.  Has three dial primary tuning controls. Uses 6V "A" battery, 90V "B" battery with taps in 22.5V increments and a 4.5V "C" battery.  The detector stage operates from the first 22.5V tap on the "B" battery.

Equipped with built-in Horn Loudspeaker and battery compartment. Same chassis is used in all of the F-5 models.

M is for Mahogany wooden case.

DeForest Tubes
Five required for any F-5

Type DV-2 Storage Battery Type Audion  $3.00
Type DV-5 Storage Battery Type Audion  $3.00

Note: When storage "A" Battery is used for filament current supply in the F-5, 5 DV-2's or 5 DV-5 tubes are required, or preferrably, 2 DV-5 and 3 DV-2 tubes.

Type DV-3 Dry Battery Type Audion  $3.00

Note: When Dry batteries are used for filament current supply in the "F-5," 5 DV-3 Tubes are required. 

Price in first year of sale 110.00 $
Collectors' prices  
External source of data Ernst Erb
Source of data Radio Collector`s Guide 1921-1932
Mentioned in Collector's Guide to Antique Radios 4. Edition (January 1926, Electrical Record Supplement page 31)
Literature/Schematics (2) Radio Broadcast, Dec. 1925, p. 225

All listed radios etc. from DeForest Radio Telephone & Telegraph Co. (De Forest); New York
Here you find 141 models, 111 with images and 10 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.