Vitavox are fully operational. As we practise more flexible working arrangements, please be understanding as our VPN and telephone systems are adjusted to suit the new environment.

UHF Hearing Protection Headset

Vitavox have designed and manufactured the VQ90401 UHF headset as a naval main broadcast magnetic loop system replacement.

These are used on the Royal Navy Astute class of submarine.

  • Greater clarity and less noise interference than magnetic loop
  • Comfortable, passive attenuation

  • Protection from sound levels above 87dB(A)

  • Typical attenuation @1,000Hz reduction of 30 dB(A)

  • Operates at 864.5MHz to satisfy the exacting EMC requirements

  • Fully integrated with standard issue MK7 cloth flight deck helmet

  • Standard twin AA batteries

  • Standby mode lasting up to 120 hours

  • Up to 60 hours receiving transmitted signal

  • Manufactured from highest grade ABS noise attenuating plastic

  • On/Off, out of range & low battery audio and visual warnings

  • Magnetic loop compatible, receive only version is also available and may be easily upgraded in the future to UHF if and when required

  • Requires UHF transmitter
VQ90401 UHF Receive Only Headset
Product: UHF Receive Only Headset
NSN: 5965-99-894-1629
Attenuation: Passive attenuation, –30 dB(A) at 1 kHz
Headband Adjustment: 250mm (450mm to 700mm)
Operating Frequency: UHF Band E, 864.5 MHz
Frequency Response: 100 Hz to 12 kHz
Power Supply: 2 x Standard AA Batteries (weight 75g)
Battery Life:

a. >120 hours on standby with 5% audio output

b. >60 hour continuous audio receive and output at maximum level

c. Additional 4-6 hours after low battery warning
RX Sensitivity: Will receive signals < 2.5uV @52dBA
Dynamic Operating Current: 45mA

Audio and visual when;

- Out of range

- Loss of main broadcast transmitted signal

- Low battery power
Range: 75m (line of sight)

Product: 130 x 120 x 100 mm

Packaged: 155 x 135 x 107 mm
Weight: 450g (without batteries)