Audio Technica MCB4 Audio-Technica MCB4 Antenna Combiner

Audio-Technica MCB4 Antenna Combiner allows the signals of up to four M3 Wireless In-Ear Monitor stereo transmitters to be combined onto a single transmitting antenna, reducing rack clutter.

A wide-band unit that operates over the 440-865 MHz range, the MCB4 is designed to complement Audio-Technica M3 Wireless In-Ear Monitor Systems. It is also suitable for many other in-ear wireless systems (with external BNC antenna connections) operating within the 440 to 865 MHz range. The MCB4 provides one output and four isolated transmitter inputs. All RF connectors are BNC-type.

Four jacks on the rear panel (controlled by the unit's power switch) provide 12V DC (centre positive) to power as many as four transmitters operating on 12 volts at up to 600 mA each. Included with the unit are four DC cables appropriate for use with M3T (or like-powered) transmitters. The 12-volt supplies for powering transmitters are short-circuit protected. The unit features all-metal construction for extreme durability and protection from radio frequency interference.

• Broadband UHF operation (440-865 MHz range)
• Combines the signals of up to four wireless in-ear monitor transmitters into one antenna
• Centralized power supply with ability to power four individual transmitters
• Maintains clean signals with low distortion
• Includes hardware for front-mounting the antenna for improved performance
• Includes adapters to allow the unit to be mounted into a single rack space

• Description: 4-Way Active Combiner
• Bandwidth: 440–865 MHz
• VSWR:
• System Gain (per channel): 0dB Typical (within specified bandwidth)
• Impedance: 50 ohms, typical (within specified bandwidth)
• Termination Type: BNC Female (5 total)
• Maximum RF Input Power: +20 dBm or 100 mW
• Third Order Intercept Point: Greater than 25 dBm
• Weight: 1.0 kg (2.2 lbs.)
• Dimensions: 210 mm (8.27“) W x 176 mm
  (Base unit only) (6.93“) D x 46 mm (1.80“) H
• Power Supply: Desktop Switching Power Supply
  Rated at 5A @ 12VDC or 60 Watts
  Input Voltage 100-240VAC via detachable IEC 320/C14 cable
  Output is provided on an overmolded 3-pin Molex style termination
• Accessories: IEC 320/C14 power cable (for power supply); 5 - 22" RF (BNC to BNC) cables; 4 – DC power cables; Rack kit for front-mounting antennas and adaptation to a 19" rack
• Transmitter power (optional): 600mA @ 12VDC – 4 outputs

Specifications:

- Transmit Power: Switchable 10mW, 50mW
- RF bandwidth: up to 40MHz
- Number of compatible frequencies per band: 20
- Audio frequency range: 35Hz to 15kHz
- S / N Ratio (A weighted): 90dB
- Stereo Separation: 60dB

The ATW-T310b wireless UniPak® body-pack transmitter has both low and high impedance inputs plus a 5V DC bian connection allowing it to be used with condenser and dynamic microphones, as well as Hi-Z instrument pickups. The locking 4-pin HRS-type audio input connector is recessed to protect the connection from damage. Operating on two standard AA batteries, the transmitter features high and low-level RF output settings. The low-level setting allows two additional hours of bttery life while retaining a strong RF signal link. Soft-touch controls provide convenient access to a variety of functions including: RF power, audio input level, power/mute locks and frequency selection. Each transmitterʼs backlit LCD display presents a great deal of setup and operating information clearly and conveniently including battery fuel remaining, mute, and operating frequency. A flashing "Lo-Batt” alert visually signals the battery life is almost depleted. A dual-colour status LED illuminates green when power is on, and red when the transmitter is muted. Programmable power/mute locks limit the functioning of the transmitterʼs power/mute button as desired for particular users and applications. To match the audio input level to the transmitter, a four-position audio input gain setting selected through the function menu is provided.

The body-pack transmitter features a safety cover to protect the soft-touch controls from being accidentally activated and a recessed input connector to increase the life of the microphone cable. Constructed of high impact materials, the body-pack transmitter features a field replaceable whip antenna and captive locking battery cover door.

• RF Power Output: High: 30 mW, Low: 10 mW (switchable), at 50 ohms
• Spurious Emissions: Following federal and national regulations
• Input Connection: Four-pin Locking Connector
  Pin 1: GND, Pin 2: INST INPUT,
  Pin 3: MIC INPUT, Pin 4: DC BIAS +5V
• Batteries: Two 1.5V AA, not included
• Battery Life: High: 6 hours (alkaline), Low: 8 hours (alkaline)
  Depending on battery type and use pattern.
• Dimensions: 66.0 mm W x 24.0 mm D x 87.0 mm H
• Net Weight: 81 g without batteries

User's Manual

The LD Systems MEI 100 G2 is an advanced 96 channel UHF in-ear monitoring system delivering outstanding sound with extended dynamics in both the 823 - 832 and 863 - 865 MHz bands.

Switchable mono and stereo modes select the perfect monitoring setting for live music, theatre and voice applications while an input limiter has been integrated for consistent, distortion-free sound reproduction from 80Hz - 15 kHz with a high S/N ratio and low THD. The LD MEI 100 G2 allows the use of up to 5 systems simultaneously.

* license free: ISM-Band license free in Europe, please check duplex gap on a country-by-country basis

• Product type: Belt pack receiver
• Radio frequency range: 823 - 832 and 863 - 865 MHz
• Channels: 96 (8 groups of 12 channels)
• Transmission method: FM, stereo
• Frequency response: 80 Hz - 15 kHz ± 3 dB
• Audio outputs: 3.5 mm jack
• Max. audio output level: 100 mW
• Controls: Up, Down, Set, Volume
• Indicators: LC display, RF (LED)
• Power supply: 2 x 1.5 V AA
• Operating time: > 10 hrs.
• Width: 65 mm
• Height: 95 mm
• Depth: 25 mm

• Replace the HDMI cable in a meeting room with a wireless connection between a laptop and a display or projector.
• Plug & play: no app or software required.
• No need to connect to a (Wi-Fi) network.
• Supports video resolutions up to Full HD 1080p/60Hz.
• Plug the HDMI receiver into the HDMI input on your display or projector and power via a USB port.
• Plug the HDMI transmitter into the HDMI output or USB-C port on your laptop, MacBook or Chromebook without the use of an additional power cable.
• Turn your PC or laptop into a media center and share content wirelessly on a display mounted on a floor stand or wall mount.