• Country
• Great Britain (UK)

• Manufacturer / Brand
• MILITARY U.K. (different makers for same model)

• Year
• 1956 ?

• Category
• Military Receiver

• Radiomuseum.org ID
• 176755

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

• Number of Tubes
• 10

• Valves / Tubes
• CV131 or EF92 CV782 or 1R5 CV284 or 75B1 CV785 or 1T4 CV785 CV785 CV785 CV784 or 1S5 CV785 CV784 CV784

• Main principle
• Superhet with RF-stage; ZF/IF 460 kHz; 1 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast plus more than 2 Short Wave bands.

• Power type and voltage
• Line / Storage batteries (perhaps also batteries) / 12; 24; 115; 220 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 8 cm = 3.1 inch

• Power out
• 0.05 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Reception Set R209/2/B - MILITARY U.K. different makers

• Shape
• Boatanchor (heavy military or commercial set >20 kg).

• Dimensions (WHD)
• 310 x 215 x 230 mm / 12.2 x 8.5 x 9.1 inch

• Notes
• The R209/2/B reception set is a later variant of the R209 MK II general-purpose receiver. The construction is very solid and waterproof.
  Antenna connections for wire/rod and for dipole ca. 80 ohms, with antenna-trimmer.
  Frequency range in 4 bands 1,0-2,3 MHz, 2,3-5,6 MHz, 5,5-12,5 MHz, 12,0-20,0 MHz. Sigal modes AM/CW/FM. The BFO is variable to tune an audio-peak at ca. 950 Hz.
  The FM-mode is present because of the existing circuitry, but it is rather useless. V8, CV784 acts in FM-mode as IF-limiter and the diode section is the discriminator. The audio stage is push-pull, with a 10 ohm speaker and a socket for two extra 150 ohm headphones.
  The set lacks the IF-signal-out connector, at it's place, the on/off switch is located now.
  It has a new PSU, 12 volts or 24 volts battery supply, as well as mains-supply 110 and 220 volts. The mains transformer also enables 230 volts. For mains supply a second connecting-cable is supplied. The voltage selector is found left at the top, besides the now locked fuseholder.
  A spare box with different fuses and a spare desiccator is supplied.
  Valves are specified after their schematic-numbering.

• Net weight (2.2 lb = 1 kg)
• 10.9 kg / 24 lb 0.1 oz (24.009 lb)

• Source of data
• - - Data from my own collection

• Mentioned in
• Wireless for the Warrior; L.Meulstee (Vol. 3)

• Literature/Schematics (1)
• equipment manual Mullard London, 1956

• Author
• Model page created by Jan Terranea. See "Data change" for further contributors.

• Other Models

• Here you find 151 models, 117 with images and 48 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from MILITARY U.K. (different makers for same model)