Cubic Communications Inc HF Quad Tuner R-3400

This is a Cubic Communications Inc HF Quad Tuner R-3400 P/N 2561
– All RF cards are in the unit. Very good condition. No cables, control unit (computer controlled?) manual or other accessories. Unit(s) appear to be unused. Information below was compiled by online sources.

 

The Cubic Communications R-3400 is a high-performance HF quad tuner designed for multi-channel signal reception and surveillance applications. It is widely used in military, government, and commercial environments requiring high-frequency (HF) monitoring and signal intelligence (SIGINT).

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Product Description:

The Cubic R-3400 HF Quad Tuner is a four-channel digital HF receiver capable of simultaneous signal reception across multiple frequencies within the high-frequency spectrum (3 MHz – 30 MHz). This unit is designed for precision tuning, signal demodulation, and intelligence gathering, making it ideal for military, security, and government communication monitoring.

It features high dynamic range performance, ensuring accurate signal capture even in challenging RF environments. The system integrates advanced filtering, low-noise signal processing, and digital demodulation capabilities, allowing for efficient signal extraction and processing.

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Key Features:

• Quad Tuning Capability – Supports simultaneous reception on up to four HF channels.
• Wide Frequency Coverage – Operates from 3 MHz to 30 MHz.
• High Dynamic Range – Ensures superior performance in RF-dense environments.
• Digital Demodulation – Processes AM, SSB, CW, and other HF signals.
• Low Phase Noise & High Sensitivity – Ideal for weak signal reception.
• Remote Control Interface – Allows for integration into automated monitoring systems.
• Compact and Rugged Design – Built for continuous operation in demanding environments.

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Applications:

• Military & Government Communications – Used in SIGINT, COMINT, and ELINT applications.
• Surveillance & Intelligence Monitoring – Monitors HF band transmissions for security agencies.
• Broadcast Monitoring – Tracks international and long-range HF broadcasts.
• Maritime & Aviation Communications – Receives HF signals from ships and aircraft.
• Emergency & Disaster Communications – Supports HF long-distance emergency networks.

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Specifications:

Specification	Details
Model	Cubic Communications R-3400
Frequency Range	3 MHz – 30 MHz
Number of Tuners	4 (Quad Tuning)
Demodulation Modes	AM, SSB, CW, and other HF modes
Tuning Resolution	1 Hz
Dynamic Range	High, for superior performance in RF-dense areas
Interface	Remote control for automated system integration
Phase Noise	Low phase noise for high sensitivity
Power Requirements	Standard AC or DC options
Form Factor	Rack-mountable unit
Weight	Varies based on configuration

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Why Choose the Cubic R-3400?

✔ Quad-channel HF reception – Monitors four signals simultaneously.
✔ Superior signal clarity – Advanced filtering and digital demodulation.
✔ Reliable & Rugged – Designed for mission-critical applications.
✔ Remote operation capability – Ideal for networked intelligence systems.
✔ Versatile use cases – Supports military, surveillance, maritime, and emergency applications.