The Global Leader in Long Range Acoustic Hailing Devices


Powerful, Intelligible Air-to-Ground

LRAD 500X MMT Helicopter-Mounted System

The LRAD-500X MMT is an advanced air-to-ground communication system that is self-powered and completely autonomous from other aircraft systems. The LRAD 500X MMT broadcasts loud, highly intelligible voice messages and attention commanding warning tones out to 2,000 meters over wind, engine and rotor wash. Classified as a payload by the FAA, the LRAD 500X MMT easily mounts to the cabin floor of a wide range of helicopters using cargo tie-down quick disconnect fittings. Featuring a rugged mount with a full range of pan & tilt motion and an integrated rechargeable power pack that provides 4 to 6+ hours of continuous operation, the LRAD 500X MMT significantly enhances the operational effectiveness of airborne law enforcement in a variety of missions.

  1. Ruggedized mount allows operator to aim and lock LRAD into position
  2. Self powered for 4 to 6+ hours of continuous operation when fully charged
  3. Integrated battery monitor displays battery charge level reading
  4. Simple to install and operate
  5. Control unit may be mounted on the back of the LRAD or operated via remote cable (included)
  6. Mounts to helicopter cabin floor with included jaw clamps
  1. Powerful, intelligible communication to 2,000 meters
  2. Variable beam width for extended coverage
  3. Quickly installed and removed from helicopter
  4. Self-powered
  5. STC not required
Images & Videos >>

LRAD 500X MMT Images & Videos

Specifications >>

LRAD 500X MMT Specifications

  • Maximum Continuous Output: 149dB SPL @ 1 meter, A-weighted
  • Sound Projection +/- 15° at 1 kHz/-3dB
  • Communications Range: Highly intelligible voice messages over slant ranges up to 2,000 meters+; max range of 650 meters over 88 dB of background noise.
    6+ dB above background noise is based on field trials conducted by independent sources.
  • Hot Operating Temperature: MIL-STD-810G, Method 501.5, Procedure II, Design type Hot, 60°C
  • Cold Operating Temperature: MIL-STD-810G, Method 502.5, Procedure II, Design type Basic Cold, -33°C
  • Hot Storage Temperature: MIL-STD-810G, Method 501.5, Procedure I, 70°C
  • Cold Storage Temperature: MIL-STD-810G, Method 502.5, Procedure I, -40°C
  • Operating Humidity: MIL-STD 810G, Method 507.5, Procedure II – Aggravated Cycle
  • Rain: MIL-STD-810G, Method 506.5, Procedure I, Blowing rain
  • Salt Fog: MIL-STD-810G, Method 509.5
  • Shipboard Vibration: MIL-STD-167-1A
  • Shipboard Shock: MIL-S-901D, Class I, Shock grade B
  • Random Vibration: MIL-STD-810G, Method 514.6, Wheeled vehicles
  • SRS Shock: MIL-STD-810G, Method 516.6, Procedure I, (Functional shock)(1)Tested by National Technical Systems (NTS) following MIL-STD-810G, MIL-STD-167-1A & MIL-S-901D
  • Dimensions: 28” W x 47” H x 13“ D (71.12 cm x 119.38 cm x 33.02 cm)
  • Weight (Mount & 500x): 150 lbs (68.0389 kg)
  • Construction Molded: cross-linked polyethylene, 6061 Aluminum, Stainless Steel connectors
  • Battery Capacity: 70Ah
  • Battery Charger:
    • Input: 100-230VAC 60/60Hz
    • Output: 7A/24VDC
  • Power Consumption: Typical Power consumption 265 Watts (With tone)
  • Normal Power Consumption: 60 Watts (With voice content)
  • Power Input 12 – 28VDC
    (2)Typical Power with warning tone. Normal Power Consumption: with voice content, sound projection is wide and voice boost is off.


(3)MIL-STD-1474D standard establishes acoustical noise limits and prescribes testing requirements and measurement techniques for determining conformance to the noise limits specified therein.

FCC Part 15 class A radiated emissions, CE

(4)Requirements for the control of electromagnetic interference characteristics of subsystems and equipment