AM HF Transmitter T.1509

The Marconi T.1509 transmitter dates back to the mid to late 1940s. The Royal Air Force used it and shares similarities with the Army's WS53 and the commercial ET-4336 models.

It was part of a broader range of equipment used during and after World War II and was primarily used as a general-purpose HF (high-frequency) communications transmitter for fixed or mobile ground stations.
Its key features and uses include:

• Frequency range: 1.5 MHz to 20 MHz (200 to 15 meters).
• Operational modes: CW (Continuous Wave), MCW (Modulated Continuous Wave), and R/T (Radio Telephony).
• Versatility: Designed for both fixed installations and mobile ground stations.
• Military application: Used by the Royal Air Force for communication purposes.
• Output power: 300 watts carrier on all services.
• Modulation: Capable of 100% amplitude modulation.
• Frequency control: Utilized either crystal control or a temperature-compensated master oscillator.
• Keying capabilities: Supported both hand keying and high-speed keying up to 200 words per minute.

The T.1509 was part of a broader range of transmitters used in military and potentially commercial settings during and after World War II. Its design allowed for flexible deployment in various communication scenarios, making it a valuable asset for long-range ground-based communications.

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