• Country
• Poland

• Manufacturer / Brand
• Unitra ZRK, Zaklady Radiowe im. M. Kasprzaka

• Year
• 1983 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 361367

• • Brand: Unitra

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

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Superheterodyne (common); Export model

• Wave bands
• Broadcast, Long Wave and FM or UHF.

• Details
• Cassette-Recorder or -Player

• Power type and voltage
• Line / Batteries (any type) / 220-230 / D: 6 x 1.5 Volt

• Loudspeaker
• 2 Loudspeakers

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: AM/FM Radio Recorder RRS-4050 - Unitra ZRK, Zaklady Radiowe im

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 328 x 195 x 82 mm / 12.9 x 7.7 x 3.2 inch

• Notes

• Wave bands: FM 88 - 108 MHz, MW < 550 - 1600 kHz, LW 160 - 280 kHz.

  Frontally, the scale, horizontally with, on the left, a red tuning indicator diode; the cassette compartment with manual opening; Above, at the extremes, two built-in microphones and, from left to right many buttons: a radio on/off, a two-position tone, five recorder, a mono on/off and three range selection. At the rear, an oscilloscope/super stereo knob, the power supply socket and access to the battery compartment, inside of which are contacts for the use of an appropriate accumulator. On the right side, the tuning knob and headset socket, while on the left side there is a DIN socket.

  Inside the ferrite antenna, 11 cm.

  The handle, which is rigid, is made of plastic, metal-coated on the inside face and has full travel.

  Licence production for export to Western Germany. The original model is Grundig RR 450. Most probably made by Unitra ZRK, Zaklady, but there is no manufacurer stated at the model.

  See also Unitra RMS-451 with OIRT-FM band.

• Net weight (2.2 lb = 1 kg)
• 2.650 kg / 5 lb 13.4 oz (5.837 lb)

• Author
• Model page created by Felice Nicolini. See "Data change" for further contributors.

• Other Models

• Here you find 216 models, 188 with images and 93 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Unitra ZRK, Zaklady Radiowe im. M. Kasprzaka