Wireless Set No. 19

Wireless Set No. 19
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Name	Wireless Set No. 19
Service	British Army, Commonwealth forces, Allied armies
Designer	British Signal Corps
Design date	1939–1940
Manufacturer	Murphy Radio, EKCO, Pye, HMV
Production date	1940–1945
Number	~250,000
Weight	Varies by set and mounting
Crew	1–3
Transmission	HF, VHF, AM

Wireless Set No. 19 The Wireless Set No. 19 was a British World War II-era vehicle radio transceiver used extensively by British, Commonwealth, and Allied armored and reconnaissance units across campaigns such as the Battle of France, North African campaign, Operation Overlord, and the Italian Campaign. Designed to provide inter-tank, inter-squadron, and artillery coordination, the set combined multiple transmitters and receivers into a single cabinet to support command, control, and liaison among formations including the British Expeditionary Force, 8th Army (United Kingdom), and 21st Army Group. Manufactured by firms such as Murphy Radio, Ekco, Pye (company), and His Master's Voice, it became a standard across many armored vehicles including the Churchill tank, Matilda II, Cromwell tank, and Sherman tank supplied under Lend-Lease.

Development and Design

Development began under the auspices of the Royal Corps of Signals and British War Office requirements in 1939 after lessons from the Spanish Civil War and the mechanized maneuvers of the British Expeditionary Force highlighted the need for integrated radio suites. Engineers collaborated with firms such as Marconi Company and General Electric Company (UK) to combine a low-power short-range intercom system with higher-power long-range sets for coordination with headquarters like Home Forces and corps-level elements such as II Corps (United Kingdom). Design priorities reflected experiences from the Battle of France and doctrinal shifts promoted by figures associated with Royal Tank Regiment and staff officers trained at Staff College, Camberley. The modular cabinet housed separate components to enable field servicing by technicians trained under the Royal Electrical and Mechanical Engineers.

Technical Specifications

The set integrated three principal circuits: an A set medium-range transmitter/receiver operating in the HF band for vehicle-to-vehicle communications, a B set VHF transmitter/receiver for short-range intercom and platoon traffic, and an internal intercom for crew coordination used in vehicles such as Universal Carrier and Armoured Reconnaissance Regiment carriers. Power was supplied from vehicle batteries maintained by dynamos similar to those used in Rolls-Royce-engined chassis and controlled via multigang selectors for channels referenced to frequencies employed by formations including 21st Army Group and Eighth Army (United Kingdom). Components employed vacuum tubes sourced from firms like British Thomson-Houston and used crystal control and variable frequency oscillators to provide ranges cited in wartime manuals used by Royal Artillery forward observation parties. Antennae configurations varied for mounting on vehicles including the Churchill tank and lighter scout cars used by units such as the Reconnaissance Corps.

Variants and Modifications

Field experience prompted factory and field modifications produced by contractors like Pye Ltd. and workshops under the direction of Royal Electrical and Mechanical Engineers. Notable variants included command versions fitted with enhanced power supplies and additional receivers for formations such as Royal Armoured Corps headquarters and liaison models adapted for Royal Canadian Army and Australian Army use. Improvised conversions were common during campaigns involving Free French Forces and Polish Armed Forces in the West, where sets were adapted for compatibility with foreign systems used by United States Army and Soviet Red Army liaison teams. Postwar surplus influenced civilian and military adaptations in countries including India and Egypt.

Operational Use and Deployment

Deployed from the Western Desert campaign to the Normandy landings, the set supported tactical control in combined-arms operations alongside formations such as 1st Armoured Division (United Kingdom), 7th Armoured Division (United Kingdom), and infantry divisions including 3rd Infantry Division (United Kingdom). Crews trained at establishments like Royal Military Academy Sandhurst and technical schools coordinated with signals units attached to corps such as VIII Corps (United Kingdom) and army groups like Allied Expeditionary Force. Use extended to armored reconnaissance, artillery liaison for units attached to Royal Artillery regiments, and to headquarters communications between brigade and divisional HQ such as those operated by commanders who had served in theaters from North Africa to North-West Europe. The set’s ubiquity was reinforced by distribution via Lend-Lease and by indigenous production in Canada and Australia for Commonwealth forces.

Performance and Limitations

Performance in terms of range and clarity varied with terrain and electromagnetic conditions encountered in operations from the deserts of Libya to bocage of Normandy, and signal reliability influenced operations during engagements like the Battle of El Alamein and the Battle of the Bulge. Limitations included susceptibility to engine noise and vehicle vibration affecting vacuum tube components, difficulties in maintenance under fire noted by units such as Princess Patricia's Canadian Light Infantry, and interoperability challenges when coordinating with United States Army radios or captured German systems captured during actions like the Battle of Gazala. Nonetheless, its integrated approach influenced postwar designs adopted by organizations such as North Atlantic Treaty Organization member armies and persisted in reserves and training units well into the early Cold War era when doctrines shaped by veterans of World War II informed communications modernization.

Category:British military radio equipment