QT-256 World's smallest broadcast quality wireless microphone transmitter

QT-256™

world's smallest broadcast quality wireless microphone transmitter

...exceptional overall reliability including the length of transmitting the rechargeable battery life promises. -Ron Scalise ESPN Remote Operation - Audio Production

Progressively since it’s inception, through the earliest prototypes and several revisions, we have seen the Q5X series of micro-transmitters evolve toward this latest generation offering its best performance specifications yet. To date, the QT-256 has risen to advanced levels meeting improved transmit/reception distances, increased fidelity, and exceptional overall reliability including the length of transmitting the rechargeable battery life promises. Enabling installation and applications that never before have been possible in athlete user sized RF transmitters under game conditions and league application guidelines, we continue to make great use and credit the designers and the unique packaging of the QT-256.Its ease of use and flexibility in our varying arena of sports application uses enable us to move ahead as leaders in television sports technology users.

Ron Scalise
ESPN Remote Operation - Audio Production
invaluable...sound is open and natural -Rick Penn C.A.S. PENNTRAXX INC. Location Film Sound Services

I've used two Quantum QT256 wireless systems on the second season of Lifetime's TV series Wild Card. They were invaluable on our lead actors due to wardrobe and personal preferences. These units are the size of a Zippo lighter and can hide under the skimpiest of costume. Their sound is open and natural; very "boom-like" Excellent compliment to the rest of my sound package.

Rick Penn C.A.S.
PENNTRAXX INC. Location Film Sound Services
worked great, sounded awesome. -Michele McKenzie Freelance Sound Engineer

Gear worked great, sounded awesome. I foresee player mics in all our futures....sigh. My only issue with the Quantum's is the rechargeable function. I feel safer with batteries I have control over. Although they were turned on at 9:30am and lasted until I turned them off at 3pm

Michele McKenzie
Freelance Sound Engineer
unobtrusive, easy to use and sounded great. -Bruce Shapiro Freelance Technical Manager- ESPN

The QT 256 worked wonderfully. They were unobtrusive, easy to use and sounded great.
Thanks for all your help.

Bruce Shapiro
Freelance Technical Manager- ESPN
well-suited for professional sports...impressive device with enormous potential. -Gary Oppenheimer Location Audio Mixer

I had the opportunity to use Quantum5X RF mikes on a documentary I was working on for the National Hockey League. The Q5X transmitters are smaller and lighter than any other transmitter I have ever used and they are already being used by NHL refs and NBA players for their live broadcasts. So when it came time to mike each of the linesmen and referees for our documentary, they were happy to wear the Q5X transmitter. They knew its small size and light weight would not affect their ability to do their job on the ice.

The Q5X system seems to be well-suited for professional sports. I had no problem with the rechargeable battery lasting the entire game and the range was impressive even though I was working off battery power without the benefit of an antenna booster. Additionally, its small size and its resistance to moisture make it an interesting alternative where other RF transmitters simply cannot be worn.

All in all, the Quantum5X is an impressive device with enormous potential.

Gary Oppenheimer
Location Audio Mixer

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
 

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