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Sennheiser HME 46-31-II Air Traffic Control Headset (Double-Sided without ActiveGard)

code: 507249
  • £307.50
  • RRP: £307.50
Availability | Usually dispatched within 24 hours


  • Sennheiser Voice Clarity for accurate communication, provides excellent voice transmission and reception
  • Perfect speech transmission Noise-cancelling microphone filters out ambient noise for optimum speech clarity to reduce “call-back/read-back” events
  • Fits every application with a choice of electret/dynamic microphone, and single sided or dual sided earcup model
  • Two channel stereo application for multi-channel communication
  • Sound protection from acoustic injury caused by sudden sound bursts on the line with Sennheiser ActiveGard® technology

Sennheiser 507249 (507-249, 507/249, 50-72-49, 507 249) (HME-46-31-II, HME 46 31 II, HME/46/31/II) HME 46-31-II Air Traffic Control Headset (Double-Sided without ActiveGard)

Sennheiser’s HMD 46-II Series of very lightweight, extremely comfortable headsets are designed specifically for all air traffic control communication and C3 (Command, Control & Communications) operators requiring excellent sound and long-term wearing comfort. A noise-cancelling microphone delivers optimum speech clarity for reduced “call-back/read-back” events. The headset can be operated in two channel mode. Soft acoustic foam ear pads and patented two-piece automatic headband deliver first class comfort with a perfect, secure fit. A flip away headphone allows for single-sided listening and a reinforced flexible microphone boom allows for left or right sided use. The headsets feature a single sided cable which is easy to exchange. Sennheiser ActiveGard® technology protects users hearing against acoustic injury caused by a sudden sound burst on the line, without interrupting communications - an added safety feature that differs from traditional acoustic shock clipping circuitry. The headset features a dynamic microphone and the series consists of two variants: HMD 46-3-II (double-sided including ActiveGard®) and HMD 46-31-II (double-sided without ActiveGard®)

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  • Color : black 
  • Impedance : 300Ω 
  • Frequency response (Microphone) : 100 - 12,000 Hz 
  • Transducer principle (Microphone) : Dynamic, noise cancelling, uni-directional 
  • Frequency response (Headphones) : 20 - 14,000 Hz 
  • Microphone : Load resistance 150 - 2,200 Ohm 
  • THD, total harmonic distortion : < 1 % at 95 dB SPL (300 - 3,000 Hz) 
  • Contact pressure : 2.7 N 
  • Ear coupling : Supra-aural (on ear) 
  • Weight : 150 g /5.29 oz 
  • Storage temperature : -55 °C - +70 °C 
  • Operating temperature : -15 °C - +55 °C 
  • SPL for peak deviation : 95 dB (1 kHz, 1 mW) 
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In The Box

  • Headset HMD 46
  • Cable clip
  • Wind and pop screen
  • Safety Guide
  • Quick Guide
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