• Country
• Great Britain (UK)

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

• Year
• 1942

• Category
• Military Receiver

• Radiomuseum.org ID
• 276104

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

• Number of Tubes
• 8

• Valves / Tubes
• ARP12 ARP12 ARP12 ARP12 ARP12 AR8 AR8 AR8

• Main principle
• Superhet with RF-stage; ZF/IF 465 kHz; 3 AF stage(s)

• Tuned circuits
• 10 AM circuit(s)

• Wave bands
• Short Wave (SW only)

• Power type and voltage
• Dry Batteries / 6 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Material
• Metal case

• from Radiomuseum.org
• Model: Reception Set R109 - MILITARY U.K. different makers

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

• Dimensions (WHD)
• 14.75 x 12.5 x 11.5 inch / 375 x 318 x 292 mm

• Notes

• The reception set R-109 is an eight-valve superheterodyne, designed for R.T. or C.W. reception. The wireless set, a loudspeaker and vibrator power-pack are built in one metal case, which also contains a set of spare valves and spare vibrator.

  It is mechanically similar to the receiver unit of Wireless Set No. 21 but incorporates a loudspeaker. The RF part of the circuit has major upgrades.

  There were 5 models of the R109

  MODEL	FREQUENCY	CURRENT DRAIN (A)	NOTES
  R109	1.8 – 8.5MHz	1.3	Standard Model
  R109A	2 – 12MHz	2.0	RF Gain Control
  R109B	2.5 – 12MHz	2.0	Uses ARP36 valve
  R109C	1.8 – 8,.4MHz	1.3	No AVC
  R109AT	2 – 12MHz	2.0	Same as A with tropical coating

   

• Net weight (2.2 lb = 1 kg)
• 43 lb (43 lb 0 oz) / 19.522 kg

• Mentioned in
• HRSA Radiowaves,No. 25, July 1988, page 25

• Author
• Model page created by Gary Cowans. 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)