• Paese
• Gran Bretagna (Regno Unito)

• Produttore / Marca
• MILITARY U.K. (different makers for same model)

• Anno
• 1945

• Categoria
• Ricetrasmettitore militare

• Radiomuseum.org ID
• 203799

Clicca sulla miniatura dello schema per richiederlo come documento gratuito.

• Numero di tubi
• 11

• Valvole
• CV65 ARTH2 ARP35 VT510 ARP12 ARP12 ARP12 ARP12 ARP12 AR8 CV65

• Principio generale
• Ricetrasmettitore; ZF/IF 460 kHz

• Gamme d'onda
• Onde corte (solamente OC)

• Tensioni di funzionamento
• Batteria di accumulatori, per tutto (es. autoradio, radio amatoriali) / 12 Volt

• Altoparlante
• - Per cuffie o amplificatori esterni

• Materiali
• Mobile di metallo

• Radiomuseum.org
• Modello: Wireless Set No.62 [MKI and MKII] - MILITARY U.K. different makers

• Forma
• Boatanchor (pesante apparecchio militare o commerciale, > 20 kg)

• Dimensioni (LxAxP)
• 20.25 x 10.25 x 12.5 inch / 514 x 260 x 318 mm

• Annotazioni

• Wireless Set No.62: narrow range shortwave transceiver covering 1,6 - 10 MHz in two ranges (1,6-4/4-10 MHz), CW (A1) and AM (A3) modes; RF output power CW 0,8-1,1 Watts, AM 0,5-0,8 Watts.
  Powered by 12 V vehicle accumulator, internal rotary transformer for 340 V HT. 8, 14 or 32 foot rod for mobile use, wire aerial for ground station use.
  Wireless Set No.62 is a general purpose low-power transceiver with a similar appearence and frequency coverage as the Wireless Set No.19, suitable as low power ground station, vehicle station, animal or manpack set. The transceiver is immersion proof for 5 minutes and late models stable enough for parachute dropping.
  The set replaces Wireless Set No.22.

  The Wireless Set No. 62 MKII is a British Army HF-band radio transceiver developed by Pye Ltd (UK) during the late stages of World War II, replacing the earlier Wireless Set No. 22. The MKII version features multiple design improvements, including a lighter aluminium case and better reception performance compared to the Mark I. It was notable for being waterproof, semi-tropicalized, and suitable for both vehicle-mount and portable operation, including as a man-pack radio for airborne and infantry forces.

  Key Technical Specifications

  • Frequency coverage: 1.6–4.0 MHz and 4.0–10.0 MHz (two switchable bands).
  • Modes: AM (voice/radiotelephony) and CW (Morse).
  • Receiver sensitivity: Better than 3 μV (1.6–4 MHz), 6 μV (4–10 MHz).
  • Intermediate frequency: 460 kHz.
  • RF output: Up to 1 watt (typically 0.78–1.1 W CW, 0.44–0.84 W voice).
  • Valves: 11, a mix of British, Philips/Mullard, and Mazda types.
  • Power supply: 12 V DC accumulator, consuming 3 A on receive and up to 5 A on transmit.
  • Construction: Aluminium case (MKII), weight ~30 lb (13.7 kg), waterproof for brief periods, tropicalized interior.
  • Dimensions: 515 × 260 × 324 mm (approx. 20¼ × 10¼ × 12¾ in).
  • Accessories: Integrated power supply, aerial tuner, multiple whip or wire antenna options, Crystal Calibrator No. 10 for frequency reference.
  • Service life: First trials in 1944, produced for the UK, Australia, and India through 1966, used by airborne, SAS, regular army, and even in light aircraft and helicopters in postwar conflicts.

  MKII Improvements and Use

  The MKII replaced the metal waist strap of the Mark I with a flexible fabric strap (for airborne deployment) and included extra case strengthening.

  Used as a man-pack, vehicle, and ground station radio, it saw service not only in WWII but in the Korean War and beyond, thanks to its reliability and versatility.

  It is a true transceiver: a single oscillator drives both receiver and transmitter, maintaining frequency alignment.

  Other companies manufactured the Wireless Set No. 62 MKII, but these were all within the Pye Group and its affiliates. The primary manufacturing company was Pye Ltd in Cambridge, UK. However, the set was also produced by Pye affiliate companies in Australia (notably Electronic Industries Ltd, Melbourne) and under license in India by Bharat Electronics Ltd. No non-Pye or external electronics companies manufactured the Wireless Set No. 62 MKII due to Pye privately funding the design and maintaining manufacturing rights within its group.

  All main production for the UK, Australia, and India remained under Pye Group companies or their direct licensees throughout its service life.

• Bibliografia
• Wireless for the Warrior Vol. 1, L. Meulstee

• Autore
• Modello inviato da Martin Bösch. Utilizzare "Proponi modifica" per inviare ulteriori dati.

• Altri modelli

• In questo link sono elencati 152 modelli, di cui 120 con immagini e 49 con schemi.
  Elenco delle radio e altri apparecchi della MILITARY U.K. (different makers for same model)