AC990 500–950 MHz Professional UHF Antenna Distribution System with Directional Antennas
Product Overview
The Haozhiseng Audio AC990 is a professional wideband UHF antenna distribution system designed for wireless microphone installations, live performances, touring productions, theatres, houses of worship, broadcast studios and fixed audio systems.
The AC990 allows two to four UHF wireless receivers to share one pair of antennas, reducing antenna clutter and simplifying system installation. Its active wideband circuitry provides stable signal distribution across the 500–950 MHz frequency range while helping improve reception coverage and overall system reliability.
The system supports standard whip antennas, coaxial extension antennas, remote antenna systems and directional log-periodic antennas. DC power is available through the antenna inputs for compatible antenna boosters and active directional antennas.
Key Features
- Professional wideband UHF antenna distribution system
- 500–950 MHz operating frequency range
- Wide 450 MHz operating bandwidth
- Distributes one antenna pair to two to four wireless receivers
- Compatible with diversity wireless receiver systems
- Typical gain of +6 to +9 dB at the center band
- +22 dBm input compression point
- Low 4.0 dB typical noise figure
- Minimum 15 dB output-port isolation
- 50 Ω system impedance
- Female BNC antenna connections
- Supports whip, coaxial, remote and directional antennas
- Provides DC power for compatible active antennas and antenna boosters
- Four 12 V DC power outputs for receiver equipment
- Universal 100–240 V, 50/60 Hz power supply
- 1U rack-mount design for professional installations
Shared-Antenna Distribution
The AC990 enables multiple wireless receivers to operate from one pair of antennas. This reduces the number of antennas required in a multi-channel wireless system and helps create a cleaner, more organized rack installation.
One AC990 system can distribute antenna signals to two to four compatible UHF receivers, making it suitable for small and medium-sized multi-channel wireless systems.
Low-Noise Active Circuit Design
The internal active circuitry uses high-dynamic-range, low-noise components with active-feedback constant-current biasing. This design provides low intermodulation distortion and helps reduce interference when multiple wireless channels are operating simultaneously.
A typical center-band gain of +6 to +9 dB helps compensate for distribution and cable losses, while the +22 dBm input compression point supports reliable operation in demanding RF environments.
Flexible Antenna Compatibility
The antenna inputs can be connected to several types of antennas operating within the supported frequency range, including:
- Standard whip antennas
- Coaxial extension antennas
- Remote antenna systems
- Directional log-periodic antennas
- Active antennas with integrated boosters
The antenna input connectors can supply power to compatible antenna boosters and amplified directional antenna systems.
Integrated Equipment Power Outputs
The AC990 provides four 12 V DC outputs for powering compatible wireless receiver equipment. This simplifies rack wiring and reduces the number of separate power adapters required in a multi-receiver system.
Applications
- Multi-channel wireless microphone systems
- Live concerts and touring productions
- Theatres and performance venues
- Houses of worship
- Broadcast and television studios
- Conference and corporate audio systems
- Schools and auditoriums
- Stadiums and sports venues
- Professional audio rental systems
- Fixed wireless audio installations
Technical Specifications
| Item | Specification |
|---|---|
| Model | AC990 |
| Product Type | UHF Antenna Distribution System |
| Frequency Range | 500–950 MHz |
| Operating Bandwidth | 450 MHz |
| Input Compression Point | +22 dBm |
| Noise Figure | 4.0 dB Typical, Center Band |
| Gain | +6 to +9 dB, Center Band |
| Output-Port Isolation | ≥15 dB |
| System Impedance | 50 Ω |
| RF Connections | Female BNC |
| Receiver Distribution | 2–4 UHF Wireless Receivers |
| DC Power Outputs | 4 Outputs, 12 V DC / 600–1000 mA |
| AC Power Supply | 100–240 V AC, 50/60 Hz |
| Current Consumption | 170 mA |
| Installation Format | 1U Rack Mount |
Why Choose the AC990?
The AC990 combines wideband UHF coverage, low-noise active distribution and flexible antenna compatibility in a practical 1U rack-mount system.
By allowing multiple wireless receivers to share one antenna pair, it simplifies installation, reduces antenna congestion and provides a more organized solution for professional multi-channel wireless microphone systems. Its integrated DC outputs and universal power supply further simplify equipment setup for touring and fixed installations.
