WDC-903M

Relacart WDC-903M - main controller for digital wireless conference system

Relacart WDC-903M is the main controller of the digital wireless conference system, designed for modern AV installations. With professional design, advanced circuitry and stable performance, it is ideal for government institutions, business venues and international conference centers.

The unit uses LoRa protocol for control signal transmission and UHF band for audio, ensuring high-quality sound and strong resistance to interference from computers, mobile phones and Bluetooth devices. It supports Dante audio networking, automatic video tracking (VTS-2000), multiple meeting modes, Auto Frequency Selection (AFS), and RS-232 integration with central control systems.

Functionality

• LoRa protocol (433MHz) for control signal transmission
• UHF band for audio transmission
• Dante protocol support - integration with Dante-enabled devices
• Multiple meeting modes:
  ① Limited time mode
  ② FIFO mode
  ③ Application mode
  ④ Voice control mode
• Compatible with Power Card antenna system
• Integration with VTS-2000 video tracking system
• RS-232 interface for central control systems
• Automatic power-on of conference units
• Auto Frequency Selection (AFS) function

Product Features

• Main frame size: 1U
• Receiving channels: 6
• Frequency reliability: ±0.005%
• Carrier frequency range: 521.25MHz-936.85MHz
• Sampling rate: 48KHz/24bit
• Modulation: FM
• Operating distance: up to 80m (open space)
• Oscillation: PLL synthesized
• Bandwidth: 32MHz
• Max. deviation: ±45KHz
• S/N ratio: >100dB
• THD: <0.5%@1KHz
• Frequency response: 50Hz-18KHz
• Outputs: balanced XLR-M, 2 x RCA
• Power supply: AC 110-240V 50/60Hz
• Weight: approx. 3.2kg
• Dimensions: 480x43x350mm

Relacart WDC-903M is a powerful and reliable main controller, forming the core of the digital conference system with full AV integration and advanced control capabilities.