- Country
- United States of America (USA)
- Manufacturer / Brand
- Philco, Philadelphia Stg. Batt. Co.; USA
- Year
- 1937/1938
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 137615
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 7
- Main principle
- Superhet with RF-stage; ZF/IF 470 kHz
- Tuned circuits
- 7 AM circuit(s)
- Wave bands
- Broadcast plus more than 2 Short Wave bands.
- Power type and voltage
- Storage and/or dry batteries / 135, 90, 2, -3, & -9 Volt
- Loudspeaker
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
- Material
- Wooden case
- from Radiomuseum.org
- Model: 38-643B - Philco, Philadelphia Stg. Batt
- Shape
- Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.
- Notes
-
The Philco model 38-643 series uses a 7-tube 4-band battery powered chassis with shadow meter (a type of signal strength meter used as a tuning aid). For the filament supply, a 2-volt storage battery may be used, or a dry battery (presumably 3 volts) with a type 1Z1 ballast lamp plugged into a socket on the battery pack. Philco service literature indicates that the schematic for the previous year's 37-643 chassis should be used when servicing the 38-643 chassis.
There are two models in the series with different cabinet styles: Model 38-643B is a tombstone, and 38-643X is a console.Stein mentions this model as a two bands radio.
- Price in first year of sale
- 80.00 $
- Source of data
- Philco Radio 1928-1942
- Circuit diagram reference
- Rider's Perpetual, Volume 8 = 1937 and before
- Mentioned in
- Machine Age to Jet Age II (page 221.)
- Literature/Schematics (1)
- Philco Wiring Diagrams, Parts Lists, Alignment Data, and Voltage Tables Vol. 2 (1937-38 models)
- Literature/Schematics (2)
- Cathedral & Tombstone Radios (page 196.)
- Author
- Model page created by Thomas Albrecht. See "Data change" for further contributors.
- Other Models
-
Here you find 4041 models, 2218 with images and 3690 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Philco, Philadelphia Stg. Batt. Co.; USA