• Country
• United States of America (USA)

• Manufacturer / Brand
• Philco, Philadelphia Stg. Batt. Co.; USA

• Year
• 1935

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 131764

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 8

• Valves / Tubes
• 78 6A7 78 75 42 42 42 80

• Main principle
• Superhet with RF-stage; ZF/IF 460 kHz

• Wave bands
• Broadcast, Long Wave and 2 x Short Wave.

• Power type and voltage
• Alternating Current supply (AC) / 115 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Power out
• 10 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 650B [common] - Philco, Philadelphia Stg. Batt

• Shape
• Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.

• Notes
• The Philco 650 series (1935) is based on an 8-tube 4-band chassis with shadow meter (tuning aid). The band covereage is 145-390 kHz, BC, 2.2-2.6 MHz, and 5.8-18 MHz. The standard 650 chassis uses 115 VAC 50-60 Hz power, and the 650A chassis is for 115 VAC 25-40 Hz.
  
  There are six individual models in the series with different cabinet styles. Model 650B is a shouldered tombstone.
  
  Model 650H is a short-legged console (not really a highboy, even though Philco uses the -H suffix to designate a highboy) with controls under a small lid on the top of the cabinet. Model 650X is a floor-type console with inclined sounding board and controls on the front of the cabinet. Model 650MX is another floor-type console with controls under a lid on the top of the cabinet.
  
  Model 650RX is two part radio with a chairside control unit and a large separate speaker cabinet (the speaker cabinet itself being as large as a console radio).
  
  Model 650PX is a console radio-phonograph with a 78 RPM single-play phonograph under the top cover.
  
  The tombstone 650B, with its smaller cabinet, uses a smaller speaker and a code 121 chassis. The other models use a larger speaker and a code 122 chassis.
  
  The model 650 series was superceded in 1936 by the 655 series, which is electrically similar, but without the long wave band, and has updated cabinet styles.

• Price in first year of sale
• 80.00 $

• Source of data
• Collector's Guide to Antique Radios (7th Edition)

• Circuit diagram reference
• Rider's Perpetual, Volume 6 = 1935 and before

• Mentioned in
• Philco Radio 1928-1942

• Literature/Schematics (1)
• Philco Service Bulletin # 220; Philco Wiring Diagrams, Parts Lists, and Essential Serv. Data 1928-36

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

• Other Models

• Here you find 4041 models, 2217 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