• Country
• Poland

• Manufacturer / Brand
• PZT - Państwowe Zakłady Tele- i Radiotechniczne; Warsawa

• Year
• 1935

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 85487

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

• Number of Tubes
• 4

• Valves / Tubes
• AF3 AF7 AL1 AZ1

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown)

• Wave bands
• Broadcast (MW) and Long Wave.

• Power type and voltage
• Alternating Current supply (AC) / 110-220 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 22 cm = 8.7 inch

• Power out
• 3 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Echo 231Z - PZT - Państwowe Zakłady Tele-

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

• Dimensions (WHD)
• 520 x 300 x 260 mm / 20.5 x 11.8 x 10.2 inch

• Net weight (2.2 lb = 1 kg)
• 9 kg / 19 lb 13.2 oz (19.824 lb)

• Author
• Model page created by Klaus Dräger. See "Data change" for further contributors.

• Other Models

• Here you find 25 models, 22 with images and 7 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from PZT - Państwowe Zakłady Tele- i Radiotechniczne; Warsawa