QT-5100 RefMicHD


Micro sized transmitter, in an impact resistant nylon case. Protective cover over Lemo mic connector for extra ruggedness. With an internal lithium polymer rechargeable battery.

  • Belt pack style
  • 8 hr run time @ 50mW
  • Power output range 10 – 100mW


Audio Mute Switch

The QT-5100 RefMicHD incorporates a large, easy-use, rocker-style, audio mute switch.  This enables the wearer to mute and unmute the audio without causing any audible popping.  The mute switch is surrounded by a protective fence that prevents unintentional tripping of the switch by bumping the transmitter. There is a highly visible LED indicator light for mute/live.  This transmitter is ideal for Referees, Umpires and a variety of officials who only need audio for brief announcements.

Rugged Protective Mic Connector Shield

The QT-5100 RefMicHD has its Lemo mic connector located on the edge of the transmitter case and protected by a rugged shielding cap that covers the entire connector to prevent damage if the event the transmitter takes a direct hit in use. The protective cap is held in place by a screw, so also prevents the wearer from disconnecting the mic.

Remote Control Audio System

The QT-5100 RefMicHD utilizes RCAS™ (Remote Control Audio System) a revolutionary way to remotely control transmitter settings from a central computer or hand held remote control. The remote functions allow technicians to control; on/off, monitor status and battery level and make on-the-fly adjustments of frequency, mic gain, RF power level, companding mode and grouping, all wirelessly.

3000 Channels

The QT-5100 RefMicHD is offered in 3 tuning blocks that span 470 to 700 MHz in 25 kHz steps, with approximately 3000 channels per block.

Comfortable and Concealable

The QT-5100 RefMicHD has a tough nylon case with belt clip. Weighing just over 2 ounces and only 3/4 of an inch thick, the QT-5100 RefMicHD is rugged, unobtrusive and very easy to use.

Technical Data

  • Dimensions: 66.5mm x 57.5mm x 20mm
  • Weight: including battery, 66.9g
  • Housing Material: Nylon Case
  • RF output power: 10mW to 100mW (user selectable, country restrictions apply)
  • UHF frequency range 470 to 700 MHz in 3 frequency blocks
  • Tunable bandwith: Varies by frequency block (25 kHz steps)
Frequency BlockChannels
470 - 540 MHz2800
525 - 600 MHz3000
600 - 700 MHz4000
  • Modulation: FM
  • Nominal deviation: +/- 40 kHz
  • Peak deviation: +/- 54 kHz
  • Pre-emphasis: 50 us
  • Compander: Q5X DCS-QT
  • Signal to Noise: 105dB (A) RMS
  • Frequency stability: +/- 0.001%
  • Spurious emission: <- 60 dBc
  • Total harmonic distortion (THD): 0.3% at nominal deviation
  • Frequency response: 50 Hz to 17,000 Hz
    • NOTE: System frequency response is dependent on the microphone element
  • Audio connector: 1 pin Lemo
  • Antenna: 1/4 wave UHF and 2.4 GHz
  • Battery: Internal Lithium Polymer
  • Operating time: (Battery) estimated 8 hrs @ 50mW
  • Operating temperatures: -10⁰C to 45⁰C
  • Approvals: FCC, CE, Industry Canada

All Analog transmitters have 2 Q5X Modes. Choose an additional Mode for Lectro UCR/SRc, Shure UR or Sennheiser HiDyn plus receiver compatibility.