The use of onfield audio - wiring players, coaches, and officials for sound - is accelerating, thanks in large part to improvements in the RF bodypack transmitters. Here's a selection of some of the leading current models.
CLICK HERE for Tech Focus: Bodypacks, Part 1: Transmitters Boost Use of Onfield Audio.
Audio-Technica
The AEW-T1000a UniPak bodypack transmitter features an LCD display, soft-touch controls, and field-replaceable helical and flexible-wire antennas. It has a four-pin locking connector and offers both low- and high-impedance inputs plus a bias connection, for use with dynamic and electret condenser microphones, as well as Hi-Z instrument pickups. Switchable RF power provides eight hours of battery life in the high (35-mW) setting and 10 hours in the low (10-mW) setting (two AA alkaline batteries). A three-position sliding control cover prevents accidental shut-off/channel-switching. www.audio-technica.com
Quantum5X Systems
The RCAS (remote-control audio system), the control system behind the QT-5100 PlayerMic and QT-5100 RefMic sports transmitters, has been totally upgraded. The hardware features a new, more powerful 2.4-GHz radio transceiver used to communicate the remote-control commands and telemetry from the bodypack, for a significantly increased remote-control range. Software and firmware upgrades add new user functionality, including a 2.4-GHz spectrum scanner, the ability to change the 2.4-GHz channel, and additional companding modes for use with various receiver companding schemes. These are in addition to the existing remotely controlled functions of on/off, frequency, mute/live, mic gain, group commands, and RF transmit power (10-250 mW). Since the RCAS is RF based, transmitter settings can be changed through uniforms and over relatively long distances without interfering with the athletes or on-air talent.
Quantum5X QT5100 PlayerMic S
The QT-5100 family of wideband remotely controlled transmitters are designed for sports applications and are frequency agile from 525 to 598 MHz with 3,000 selectable channels in 25-kHz steps. Currently, there are five models of the QT-5100: Incognito, AquaMic (waterproof), RefMic (with integrated non-popping audio mute switch), PlayerMic, and PlayerMic S. The QT-5100 PlayerMic S, the smallest remote-controlled PlayerMic to date, features a soft, tough, flexible polymer enclosure measuring 3 x 1.5 x 0.4 in. and a run time of 3.5 hours at a 50-mW RF transmit power setting.
The QT-300 series, an updated version of the QT-256 legacy product, is available in three models: BeltPack, PlayerMic, and AquaMic. All are tunable to 3,000 frequencies in 25-kHz steps between 525 MHz and 598 MHz. The output power is adjustable in preselected steps between 10 mW and 250 mW. Mic gain is adjustable as well. The standard QT-300 enclosure is milled from industrial-grade aluminum and is the size of two AA batteries. The QT-300 AquaMic is a fully waterproof transmitter. The QT-300 PlayerMic comes in a 4.3- x 1.5- x 0.4-in. flexible, sweat-proof polymer enclosure designed for player safety.
Every Q5X transmitter uses the latest lithium-ion battery technology to maintain a green environment while providing four to 15 hours of run time (depending on battery size and transmitter power) on a single charge. www.q5x.com
Shure
Shure Axient AXT400 receiver
The Axient system in Frequency Diversity mode uses two AXT100 bodypacks to deliver seamless audio while mitigating interference during mission-critical audio broadcasts. Unique to Axient, Frequency Diversity allows the referee-audio payload to be simultaneously transmitted on two independent RF links so that, if one carrier is compromised, the second RF carrier continues to deliver the content. Different from simply double-packing the referee, the AXT400 receiver manages all audio and provides a single feed to both the stadium and the broadcast trucks. When it's combined with the WA662 in-line dual bodypack mute switch, on-field officials can easily mute their microphones connected to their AXT100's. Broadcasters can operate in full confidence with the best possible protection against interference while providing clear audio from the referees throughout the game. www.shure.com
Sennheiser
Announced in November, the Digital 6000 Series uses the same long-range mode and proprietary Sennheiser Digital Audio Codec as the top-of-the-range Digital 9000 wireless series. Comprising a two-channel receiver in two versions, a bodypack, a handheld transmitter, and a rack-mount 19-in. charging unit, the Digital 6000 Series will be available in March. The digital two-channel receiver works across a switching bandwidth of 244 MHz (470-714 MHz), which is covered by three transmitter versions (470-558 MHz, 550-638 MHz, and 630-718 MHz). For larger systems, up to eight receiver units can be daisy-chained without the need for an additional antenna splitter; the multichannel system will work with a single pair of antennas. System latency is 3 ms. The Digital 6000 features true-bit diversity, transmission-error correction, and additional intelligent error concealment. For data security, a feature that is particularly important for conference and corporate use, Digital 6000 features switchable AES 256 encryption.
Sennheiser Digital 6000 Series receiver
The SK 9000 high-resolution, uncompressed digital wireless beltpack transmitter is compatible with three-pin Lemo connector lavaliere microphones. Its housing is die-cast magnesium to provide maximum robustness at very low weight. The user interface offers an icon-based menu structure, and the device features infrared synchronization with the receivers, as well as exchangeable energy packs with lithium-ion batteries. The SK9000 is compatible with the flagship EM 9046 digital wireless mainframe, which accommodates up to eight receiver channels.
The SK 5212
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The use of onfield audio - wiring players, coaches, and officials for sound - is accelerating, thanks in large part to improvements in the RF bodypack transmitters. Here's a selection of some of the leading current models.
