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David Clark H3440 Dual-Ear Ground Support Headset | 40583G-01
The David Clark H3440 is a rugged, dual-ear, behind-the-head headset designed for clear communication and noise protection in high-noise environments. Ideal for ground crew, maintenance, and industrial personnel working under helmets or hard hats.
Behind-the-head, dual-ear design fits comfortably under helmets
M-7A electret noise-canceling microphone for clear voice transmission
Flexible boom mic with left/right positioning for user convenience
Comfort-Gel undercut ear seals for passive hearing protection and comfort
36-inch straight cord with standard 1/4" plug for direct radio or intercom connection
Noise Reduction Rating (NRR) of 23 dB for effective noise attenuation
Designed for professionals operating in noisy, demanding environments, the David Clark H3440 (Part No. 40583G-01) offers reliable communication and hearing protection. The dual-ear design enhances audio clarity while isolating unwanted ambient noise, making it perfect for ramp agents, maintenance crews, and tug operators.
The headset’s behind-the-head design accommodates hard hats and other protective gear, while the flexible M-7A microphone boom allows precise placement on either side. Comfort-Gel ear seals provide long-lasting comfort during extended use, and the rugged construction ensures durability in harsh work conditions. A 36-inch straight cord with standard plug enables easy integration with aviation radios and intercom systems.
Part Number: 40583G-01
Headset Style: Dual-ear, behind-the-head (BTH)
Microphone: M-7A electret, noise-canceling
Mic Boom: Flexible, adjustable for left/right use
Cord: 36-inch straight cord
Connector: 1/4" standard stereo plug
Noise Reduction Rating: 23 dB
Comfort Features: Comfort-Gel ear seals
Use Cases: Ground support, ramp crew, maintenance, industrial communication
Helmet Compatible: Yes, fits under hard hats or helmets
Used 7 on heavily oxidized Airstream. Sanded off oxidation. Presto changeo, an almost mirror-like finish. Will stick with Nuvite. Important to follow instructional video.
This is an amazing aid to my fisning. Something serious inland fishermen should have. My only regret is that I didn't have this over the last 20 years.
