David Clark Ground Support Headset

The David Clark H3312 is a dual-ear, over-the-head style headset designed for airline ground support and high-noise environments. It ensures clear communication and effective hearing protection, making it ideal for commercial aircraft interphone systems and de-icing intercoms.

FEATURES
• Noise-canceling microphone for clear transmissions
• Foam-filled ear seals for comfort in all weather conditions
• Durable construction with carbon steel hardware and chrome finish

BENEFITS
• Enhanced communication clarity in noisy environments
• Comfortable for extended use, even in extreme temperatures
• Reliable and durable, ensuring long-term performance

SPECIFICATIONS
• Weight (without cord): 20.4 oz (578g)
• Ear Impedance: 300Ω each, wired in series
• Ear Sensitivity: 90 dB SPL/1mW @ 1kHz
• Ear Frequency Response: 200 to 5,500 Hz
• Mic Impedance: 150Ω nominal
• Mic Sensitivity: 400mV ± 6dB into 150Ω load @ 1kHz for 114 dB SPL input
• Mic Frequency Response: 150Hz to 8kHz
• Mic DC Supply Voltage: 8-16V, 220 – 2,200Ω (not polarity sensitive)