K/CR/11 RAAF receiver type AR7

Kingsley (brand); various manufacturers

  • Year
  • 1942 ?
  • Category
  • Commercial Receiver (may include amateur bands)
  • Radiomuseum.org ID
  • 206758

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

 Technical Specifications

  • Number of Tubes
  • 10
  • Main principle
  • Superhet with RF-stage; ZF/IF 455 kHz; 2 AF stage(s)
  • Tuned circuits
  • 11 AM circuit(s)
  • Wave bands
  • Wave Bands given in the notes.
  • Power type and voltage
  • Line / Storage batteries (perhaps also batteries) / 240 / 12 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: K/CR/11 [RAAF receiver type AR7] - Kingsley brand; various
  • Shape
  • Rack
  • Notes
  • The Kingsley K/CR/11 is a communications type receiver similar in concept to the National HRO. The AR7 version came with 5 plug in coil boxes: A, 140-405 kHz; B, 500-1420 kHz; C, 1.42-4.3 MHz; D, 4.3-12.5 MHz; E, 12.5-25 MHz. The complete receiver consisted of 3 rack mounted units: the receiver proper, the power supply and the speaker. The two 6X5GT valves are in the power supply unit which uses a non-synchronous vibrator on 12 VDC. About 3200 AR7 versions were made and it is the most commonly found variant of the K/CR/11. Other versions made include one for the Australian Army and another for the Dutch Navy. After the war, the AR7 was keenly sought by amateur radio operators on the surplus market and, as a result, examples found today have usually been heavily modified.
  • Net weight (2.2 lb = 1 kg)
  • 54 kg / 118 lb 15.1 oz (118.943 lb)
  • Literature/Schematics (1)
  • HRSA "Radio Waves" magazine, Oct. '97 P3-8.
  • Author
  • Model page created by Stuart Irwin. See "Data change" for further contributors.

 Collections | Museums | Literature


The model can be seen in the following museums.


The model is documented in the following literature.