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The David Clark NX321005B / 09851P-37 Push-to-Talk (PTT) Switch is a genuine replacement component engineered for aviation headset and communications systems.
OEM David Clark spare part delivering reliable PTT performance in headset systems.
Rugged push-to-talk switch design built to withstand high-noise cockpit and ground-crew environments.
Compact, lightweight construction simplifies installation and integrates with headset wiring systems.
Designed for use with David Clark headset communications systems — ideal for repairs or upgrades.
This PTT Switch from David Clark offers professional-grade performance for pilots and technicians who demand clarity and reliability. The NX321005B / 09851P-37 module enables quick push-to-talk activation with crisp tactile response, ensuring clear radio transmissions even in challenging noise environments. Compatible with the same headset families and wiring frameworks used by David Clark, this switch is ideal for refurbishment, replacement, or service of aviation-grade headsets. Installation is straightforward for anyone familiar with David Clark wiring and headset components, making it an excellent choice for maintenance shops and individual pilots alike.
Part Number: 09851P-37 / NX321005B
Type: Momentary Push-to-Talk (PTT) Switch
Function: Single-button transmission control for aviation headsets
Compatibility: David Clark headset communication systems and accessories
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.
