• Country
• Switzerland

• Manufacturer / Brand
• Philips - Schweiz

• Year
• 1940/1941

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 13314

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

• Number of Tubes
• 7

• Valves / Tubes
• EF8 ECH3 EBF2 EF9 EM4 EL3 AZ1

• Main principle
• Superhet with RF-stage; ZF/IF 452 kHz; 2 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

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

• Power type and voltage
• Alternating Current supply (AC) / 110; 125; 145; 200; 220; 245 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Power out
• 4.5 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 900X - Philips - Schweiz

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 580 x 330 x 250 mm / 22.8 x 13 x 9.8 inch

• Notes

• The technical papers mention a ECH3B tube instead of ECH3, which is functionally the same but with an octal base. Up to now, no radio has been found with an ECH3B tube.

   

• Price in first year of sale
• 460.00 SFr

• External source of data
• E. Erb 3-907007-36-0

• Source of data
• Radiokatalog Band 2, Ernst Erb

• Circuit diagram reference
• Thali-Schemasammlung und Tungsram-Röhrenbestückung.

• Picture reference
• Das Modell ist im «Radiokatalog» (Erb) abgebildet.

• Other Models

• Here you find 290 models, 216 with images and 224 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philips - Schweiz