• Year
  • 1951–1954
  • Category
  • Military Equipment (not Re, Tr or RXT)
  • Radiomuseum.org ID
  • 154150

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 460 kHz
  • Wave bands
  • Wave Bands given in the notes.
  • Power type and voltage
  • Storage Battery for all (e.g. for car radios and amateur radios) / 12 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 MK II - 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 Mk2 reception set is an improved version of the R209 general-purpose receiver. 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. Variable BFO with audio-peak-filter at 950 Hz. The FM-mode is present because of the existing R209 circuitry, but it is rather useless. For FM reception V8 is used as an amplifier-limiter and the diode-section becomes a discriminator, but FM was never introduced in the R209 frequency-range.. There is an IF-signal-out connector, and the power input is now for a 12 volts battery . The RF-amplifier is changed to a CV131 in stead of the 1T4, and a CV284 stabilizer replaces the 9512S. The oscillator coils are modified and compensated to achieve better frequency-stability. New is a dial-lock and a 12 volts fuse-holder at the place of the spare desiccator. A further development is the R209/2/B with a choice for 4 different power sources.
  • Net weight (2.2 lb = 1 kg)
  • 10.5 kg / 23 lb 2 oz (23.128 lb)
  • Source of data
  • -- Original-techn. papers.
  • Literature/Schematics (1)
  • -- Original prospect or advert

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