• Country
• United States of America (USA)

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

• Year
• 1938/1939

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 50608

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

• Number of Tubes
• 11

• Valves / Tubes
• 6K7G 6J8G 6K7G 6H6G 6J5G 6J5G 6J5G 6J5G 6F6G 6F6G 5Y4G

• Main principle
• Superhet with RF-stage; ZF/IF 470 kHz

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

• Power type and voltage
• Alternating Current supply (AC) / 115, 220 Volt

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

• Power out
• 7.5 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 39-2770T - Philco, Philadelphia Stg. Batt

• Shape
• Tablemodel, high profile (upright - NOT Cathedral nor decorative).

• Notes
• The Philco Tropic model 39-2770 series had two models, an upright table model 39-2770T and a console 39-2770XX. Both use a chassis similar to Philco model 39-770, but with a long wave band replacing one of the three short wave bands of the 39-770.
  
  Band coverage is 140-390 kHz (LW), 540-1720 kHz (BC), 5.7-11.5 MHz (SW1), and 11.5-22 MHz (SW2).
  
  Philco "Tropic" radios were export models intended for harsh environments.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 11 = ca. 1940 and before

• Literature/Schematics (1)
• Philco 1939 RMS Yearbook

• Other Models

• Here you find 4073 models, 2222 with images and 3721 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philco, Philadelphia Stg. Batt. Co.; USA