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38B (38, 38A) Version 3

38B ; Philco, Philadelphia (ID = 489884) Radio
38B ; Philco, Philadelphia (ID = 489885) Radio
38B ; Philco, Philadelphia (ID = 1172402) Radio
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38B ; Philco, Philadelphia (ID = 1172402) Radio
Philco, Philadelphia: 38B [Radio] ID = 1172402 600x800
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For model 38B (38, 38A) Version 3, Philco, Philadelphia Stg. Batt. Co.; USA
Country:  United States of America (USA)
Manufacturer / Brand:  Philco, Philadelphia Stg. Batt. Co.; USA
Year: 1934/1935 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 5: 1A6 32 32 30 19
Main principle Superheterodyne (common); ZF/IF 460 kHz
Wave bands Broadcast (MW) and Tropical/Marine/Police Band(s) = 150-200m.
Power type and voltage Storage and/or dry batteries / 135, 67.5, 2, -3, & -7 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
Power out
from Model: 38B [Version 3] - Philco, Philadelphia Stg. Batt
Material Wooden case
Shape Table-Cathedral-Type (upright, round top or gothic arch, not rounded edges only).
Notes The model 38 series are battery operated 2-band sets with a variety of cabinet styles over several years.

There were five versions of the cathedral 38B: Version 1 (1933) has the classic spade-shaped speaker opening used on many Philco cathedral cabinets. Version 2 (1934) has an oval opening with three vertical bars and downward curving additional bars at the bottom. Version 3 (1934-35) has an oval opening with stepped features at the bottom. Version 4 (1935) is similar to version 3, but has a larger escutcheon opening and new dial design. Version 5 (1936) has a cabinet with a continuous arch shape starting from the base and multiple vertical bars in the speaker opening.

The model 38L lowboy has two versions: an early version (1933-34) with four narrow vertical bars at the edges of the speaker opening, along with other embellishment, and a late version (1934-35) with a single vertical bar through the center of the speaker opening, along with other embellishment.

There was also a highboy (1933) and a floor-type console (1935-36).

The chassis had an early version (used for 1933 and early 1934) with a type 15 mixer tube and a later version with type 1A6 mixer (used from mid 1934 onward). Chassis marked as model 38 have no ballast tube and are designed for use with a 2 volt storage battery for filaments. Those marked 38A have a ballast tube (type 6 early; type 1A1 late) and are designed for a dry battery (presumably 3 volts?) for the filament supply.

Two Philco schematics are available: code 121 with type 15 mixer (also found in Rider vol 4) and code 123 with 1A6 mixer.
Price in first year of sale 50.00 $
Source of data Philco Radio 1928-1942
Circuit diagram reference Rider's Perpetual, Volume 4 = ca. 1934 and before
Literature/Schematics (1) Philco 1928-36 Wiring Diagrams, Parts Lists, and Essential Service Data

Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.

All listed radios etc. from Philco, Philadelphia Stg. Batt. Co.; USA
Here you find 3741 models, 2122 with images and 3137 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.