QT-5100 RefMic


Micro sized transmitter, in an impact resistant, hard composite case. With an internal lithium ion rechargeable battery and Lemo connector for a removable lavalier.

  • Belt pack style
  • 8hr run time @50mW
  • RF output range 10 – 100mW
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Audio Mute Switch

The QT-5100 RefMic incorporates a non-popping, audio mute switch.  This enables the wearer to mute and unmute the audio without causing any audible popping.  This transmitter is ideal for Referees, Umpires and a variety of officials who only need audio for brief announcements.  This is also a good solution for corporate presenters who need a top quality audio experience that they can control.

Remote Control Audio System

The QT-5100 RefMic 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, mode and grouping, all wirelessly.

3000 Channels

The QT-5100 RefMic offers approximately 3,000 channels. It is remotely tunable from 470 MHz to 700 MHz in 25 kHz steps.

Comfortable and Concealable

The QT-5100 RefMic has a tough, composite hard case with belt clip.  This transmitter is the RCAS™ enabled version of our worlds smallest bodypack, the QT-300 BeltMic. Weighing less than 2 ounces and only a 1/2 of an inch thick, the QT-5100 RefMic joins the QT family as the most comfortable audio transmitters in the industry.

Technical Data

• Dimensions: 71mm x 42mm x 19mm
• RF output power: 10 to 100mW (user selectable, country restrictions apply)
• Number of channels: approx. 3,000
• RF frequency range: 470 to 700 MHz
• Switching bandwidth: 75MHz (25 kHz steps)
• Modulation: FM
• Nominal deviation: +/- 40 kHz
• Peak deviation: +/- 54 kHz
• Pre-emphasis: 50 us
• Compander: Q5X DCS-QT
• Signal to Noise: 110dB (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 flex
• Battery: Internal Lithium Ion
• Operating time: (Battery) estimated 8 hrs @ 50mW
• Operating Temperatures: -10C to +45C
• Approvals: FCC, CE, Industry Canada