The QT-256™ is the world's smallest broadcast quality wireless microphone transmitter. This proprietary patent pending micro transmitter technology is so small it can be worn or hidden anywhere, and is being used successfully by ESPN to provide a voice channel from athletes and coaches at MLB, and NHL games, as well as by actors and entertainers in television, film, on live stage and studio performances. The QT-256™ transmitter has companding, pre-emphasis and provides high quality broadcast audio together with either an integral or lavaliere mounted microphone and a 2 antenna Diversity Receiver. It features the latest Lithium Ion batteries technologies that last up to 12 hours depending on output power ranging from 50 to 250mW. Its 256 frequency selectable from 450-950.000 MHz. Extreme low noise, and broadcast quality audio with proprietary companding. The QT-256™ comes with various assecories including the new AX-1 power supply. the AX-1 has been especially designed to provide replaceable AA batteries as an optional attachement for the QT-256™. Allowing if used the capablility of around the clock operation, ideal for Reality TV applications. The AX-1 like the QT-256™ is made from solid aluminium providing extreme durability and reliability.

Technical Data

• RF output power: 50-250 mW
• Transmission Frequencies: 256
• RF frequency range: 450...950 MHz
• Switching bandwidth: 25MHz
• Modulation: FM
• Nominal deviation: - +/- 40 kHz
• Peak deviation: +/- 54 kHz
• Compander: DCS-QT
• Operating time: (Battery) 7-8 hrs @ 100mW 
• Dimensions: 56mm x 33.5mm x 13.5mm
• Weight: 1.5 oz with battery
• Audio connector: 4 pin lemo
• Antenna: 1/4 wave flex
• Signal to Noise 110dB (A) rms
• Frequency stability +/- 0.001%
• Spurious emmisions 60 dB below carrier
• THD 0.3% at nominal deviation
• AF Frequency response 20-20,000 Hz
• Specific Absrption Ratio (SAR) 0.68 W/Kg
• Battery: Lithium
• Temperatures: -10c to +45C
• Approvals: FCC, CE, Industry Canada