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A-5 Dwarf

A-5 Dwarf; Halson Radio Mfg. Co (ID = 424925) Radio
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A-5 Dwarf; Halson Radio Mfg. Co (ID = 424925) Radio
Select picture or schematic to display from thumbnails on the right and click for download.
Country:  United States of America (USA)
Manufacturer / Brand:  Halson Radio Mfg. Co.; New York City (NY)
Year: 1938 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 4: 6K7GT 6J7GT 25L6GT 25Z6GT L49B
Main principle TRF without regeneration; 1 AF stage(s)
Tuned circuits 2 AM circuit(s)
Wave bands Broadcast only (MW).
Power type and voltage AC/DC-set / 115 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
Power out
from Model: A-5 Dwarf - Halson Radio Mfg. Co.; New
Material Catalin (a brand name for a thermosetting polymer popular in the 1930s and 1940s - a phenol formaldehyde resin - like Bakelite, but a two-stage process with a lot of work afterwards).
Shape Tablemodel without push buttons, Mantel/Midget/Compact up to 14
Notes BC (545-1720 kHz) band.
Colors: red, green or ivory.
External source of data Ernst Erb
Source of data The Radio Collector's Directory and Price Guide 1921 - 1965
Circuit diagram reference Rider's Perpetual, Volume 9 = 1938 and before
Mentioned in Collector's Guide to Antique Radios (7th Edition)
Literature/Schematics (1) Table Top Radios Vol. 4 Stein 2003

All listed radios etc. from Halson Radio Mfg. Co.; New York City (NY)
Here you find 105 models, 35 with images and 64 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.