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84B Late

84B ; Philco, Philadelphia (ID = 520250) Radio
84B ; Philco, Philadelphia (ID = 520251) Radio
84B ; Philco, Philadelphia (ID = 870279) Radio 84B ; Philco, Philadelphia (ID = 870280) Radio
84B ; Philco, Philadelphia (ID = 870283) Radio 84B ; Philco, Philadelphia (ID = 870281) Radio
84B ; Philco, Philadelphia (ID = 870284) Radio 84B ; Philco, Philadelphia (ID = 870285) Radio
84B ; Philco, Philadelphia (ID = 1351186) Radio 84B ; Philco, Philadelphia (ID = 1351187) Radio
84B ; Philco, Philadelphia (ID = 1351188) Radio 84B ; Philco, Philadelphia (ID = 1516691) Radio
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84B ; Philco, Philadelphia (ID = 870279) Radio
Philco, Philadelphia: 84B [Radio] ID = 870279 641x768
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For model 84B Late, Philco, Philadelphia Stg. Batt. Co.; USA:
Philco model 84B-Late with courtesy by Bruce Myron.
Country:  United States of America (USA)
Manufacturer / Brand:  Philco, Philadelphia Stg. Batt. Co.; USA
Year: 1936 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 4: 77 77 42 80
Main principle Superheterodyne (common); ZF/IF 460 kHz
Wave bands Broadcast only (MW).
Power type and voltage Alternating Current supply (AC) / 115 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
Power out
from Model: 84B [Late] - Philco, Philadelphia Stg. Batt
Material Wooden case
Shape Table-Cathedral-Type (upright, round top or gothic arch, not rounded edges only).
Notes Model 84B was the third of a series (models 80B, 81B, and 84B) of low cost 4-tube cathedrals that used a regenerative combined IF/detector stage to maximize sensitivity with very few components.

The early version (1934) had a round speaker opening with three vertical bars. The middle version (1935) had a lyre-shaped opening with three vertical bars. The late version (1936) had a continuous arch-shape extending upward from the base, and an oval speaker opening with five mostly vertical bars.

Model 84B continued onward for one more year as model 37-84B, with two more cabinet styles, and a new tube lineup (but still using a similar circuit).
Price in first year of sale 20.00 $
Source of data Philco Radio 1928-1942
Circuit diagram reference Rider's Perpetual, Volume 4 = ca. 1934 and before
Mentioned in Machine Age to Jet Age II (page 212.)
Literature/Schematics (1) Philco 1928-36 Wiring Diagrams, Parts Lists, and Essential Service Data
Literature/Schematics (2) Cathedral & Tombstone Radios (page 194.)

Model page created by Thomas Albrecht. See "Data change" for further contributors.

All listed radios etc. from Philco, Philadelphia Stg. Batt. Co.; USA
Here you find 3746 models, 2126 with images and 3140 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.