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84B Early

84B ; Philco, Philadelphia (ID = 214380) Radio
84B ; Philco, Philadelphia (ID = 520246) Radio
84B ; Philco, Philadelphia (ID = 520247) Radio
84B ; Philco, Philadelphia (ID = 48548) Radio 84B ; Philco, Philadelphia (ID = 639553) Radio
84B ; Philco, Philadelphia (ID = 267203) Radio 84B ; Philco, Philadelphia (ID = 374421) Radio
84B ; Philco, Philadelphia (ID = 374422) Radio 84B ; Philco, Philadelphia (ID = 639609) Radio
84B ; Philco, Philadelphia (ID = 639610) Radio 84B ; Philco, Philadelphia (ID = 665634) Radio
84B ; Philco, Philadelphia (ID = 769447) Radio 84B ; Philco, Philadelphia (ID = 769448) Radio
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84B ; Philco, Philadelphia (ID = 48548) Radio
Philco, Philadelphia: 84B [Radio] ID = 48548 415x456
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For model 84B Early, Philco, Philadelphia Stg. Batt. Co.; USA:
copy gen.
Country:  United States of America (USA)
Manufacturer / Brand:  Philco, Philadelphia Stg. Batt. Co.; USA
Year: 1934/1934 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 4: 77 77 42 80
Main principle Super-Heterodyne (Super in general); ZF/IF 460 kHz; Super, reaction, but not adjustable
Tuned circuits 3 AM circuit(s)
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 [Early] - Philco, Philadelphia Stg. Batt
Material Wooden case
Shape Table-Cathedral-Type (upright, round top or gothic arch, not rounded edges only).
Dimensions (WHD) 12 x 14.3 x 8 inch / 305 x 363 x 203 mm
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 $
Collectors' prices  
External source of data Ernst Erb
Source of data Collector's Guide to Antique Radios 4. Edition
Circuit diagram reference Rider's Perpetual, Volume 4 = ca. 1934 and before
Mentioned in Antique Radios, Johnson 1986
Literature/Schematics (1) Philco Radio 1928-1942 (Philco 1928-36 Wiring Diagrams, Parts Lists, and Essential Service Data)
Literature/Schematics (2) Machine Age to Jet Age II (page 212.)
Literature/Schematics (3) Cathedral & Tombstone Radios (page 194.)
Literature/Schematics (4) Spiegel Catalogs (Aircastle) (Spring/Summer 1934, No. 137, page 178.)

All listed radios etc. from Philco, Philadelphia Stg. Batt. Co.; USA
Here you find 3716 models, 2085 with images and 3097 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.