David Clark 40583G-01 – H3440 Headset for Series 3000 PTT Radio Adapter
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Features
- Designed to connect seamlessly with the Series 3000 PTT Two-Way Radio Adapter
- Behind-the-head design for compatibility with hard hats and other protective gear.
- Equipped with a 30" straight cord for reliable and versatile connectivity
- Constructed with durable and lightweight materials for extended reliability
- Soft ear seals and an adjustable strap for enhanced comfort during long shifts
- Noise-canceling microphone for clear communication in high-noise conditions
- Ideal for industrial, utility, and demanding work environments requiring adapter compatibility
- Made in the USA and backed by a five-year warranty for dependable use
| General Information | |
|---|---|
| Part # | 40583G-01 |
| Manufacturer | David Clark |
| Shipping Information | |
|---|---|
| Schedule B | 8518903000 |
| ECCN | EAR99 |
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AIRCRAFT COMPATIBILITY
| Compatible Aircraft* |
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QUESTIONS & ANSWERS
The H3440 Headset is designed for high-noise environments such as aircraft ramp operations, ground support, and industrial settings where clear two-way communication is essential. Its behind-the-head design accommodates protective helmets or caps, making it ideal for personnel who need both hearing protection and situational awareness.
The H3440 is a dual-ear, behind-the-head headset that provides a balanced blend of comfort, protection, and noise reduction with a certified Noise Reduction Rating (NRR) of 23 dB. The H3441 is a single-ear version for users who require greater ambient awareness, while the H3442 features dual sealed earcups for maximum attenuation in extreme noise environments.
The headset is equipped with the David Clark M-7A noise-canceling electret microphone, which delivers crystal-clear voice transmission even in the noise of jet ramps or heavy equipment. Its hybrid wire-flex boom rotates up to 200 degrees for precise placement on either the left or right side, allowing for comfortable use by any operator.
The H3440 interfaces seamlessly with David Clark Series 3000 PTT Radio Adapters and can also be used with Series 3100, 3400, and 3800 intercom systems. It utilizes the standard SC-267/PJ-051 plug, ensuring compatibility with most commercial or industrial two-way communication setups.
The undercut Comfort-Gel ear seals contour naturally to the wearer’s head, reducing pressure and improving airflow. Combined with a low-tension headband assembly, the headset minimizes fatigue over long operations while maintaining a secure seal for consistent acoustic performance.
Yes. The headset features rugged ABS domes, a reinforced carbon steel spring assembly, and a shielded four-conductor cord designed to resist RFI/EMI interference. These components ensure long-term durability under demanding conditions, such as vibration, moisture, and extreme temperatures.
The 30” straight cord and standard PJ-051 plug allow quick integration with David Clark PTT adapters and mobile radio systems. Its noise-canceling mic ensures clear transmission during vehicle or ramp operations, making it a preferred choice for personnel who rely on hands-on control while maintaining communication.
For optimal performance, ensure the earcups fully enclose both ears and the adjustable strap sits comfortably below any protective headgear. Proper fit is critical for achieving the rated 23 dB Noise Reduction Rating (NRR). Glasses with thin temples or minimal gaps are recommended to maintain a secure seal.
Maintenance is straightforward – wipe ear seals and domes with a damp cloth, avoid solvents, and store the headset in a dry area when not in use. Regular inspection of cables and connectors helps prevent communication dropouts, ensuring consistent reliability throughout daily use.
The H3440 is engineered to operate reliably across a wide range of climates. The gel ear seals remain flexible even in cold conditions, and the shielded cord resists moisture and corrosion, maintaining dependable communication in both arid and humid ramp environments.
Operators favor the H3440 because it provides both high noise protection and clear communication without isolating them completely from situational sounds. The dual-ear, behind-the-head configuration strikes the right balance of protection, comfort, and awareness for ramp agents, mechanics, and tug drivers.
The H3440 utilizes RFI/EMI-shielded four-conductor cabling to maintain audio clarity in the vicinity of high-power transmitters or aircraft electronics. This shielding reduces distortion and ensures consistent voice quality, even in high-signal environments like maintenance hangars or flight lines.
Yes. PJi offers individual replacement parts for the David Clark H3440 headset, including the undercut gel ear seals (40863G-02), M-7A microphone (09168P-33), cord assembly (18028G-09), adjustable strap (10370G-03), and dome and mic boom kits (40688G-71). This allows users to restore their headset to full function without replacing the entire unit.
