
AC680 4-Channel UHF Wireless Monitoring Antenna Combiner System
Product Overview
The AC680 is a professional UHF antenna combiner and distribution system designed for wireless in-ear monitoring and other multi-channel RF applications.
It allows up to four wireless monitoring transmitters to share one antenna, simplifying antenna installation while improving RF system organization and coverage. It can also be used with multiple directional antennas to create a wider antenna array for large stages and complex performance environments.
Four internal high-frequency amplifier paths route the input signals to the shared output with minimal signal loss. The system supports a wide frequency range of 400–950 MHz and uses professional 50 Ω RF connections for reliable signal transmission.
Key Features
- Professional antenna combiner for wireless monitoring systems
- Allows up to four transmitters to share one antenna
- Supports multi-antenna array configurations
- Four internal high-frequency amplifier paths
- 400–950 MHz wide UHF frequency range
- 0 dB distribution attenuation with ±1 dB tolerance
- Maximum RF input power of 30 mW per input
- Professional 50 Ω RF impedance
- DC power supply through BNC connections
- Suitable for large stages and multi-channel wireless systems
- Compact metal enclosure for professional installations
Shared-Antenna Operation
Using a shared antenna reduces the number of antennas required for a multi-channel wireless monitoring system. This simplifies installation, reduces cable clutter and supports more organized RF deployment.
The AC680 can operate with one shared antenna for up to four transmitters or form part of a directional antenna array for broader signal coverage.
Applications
- Wireless in-ear monitoring systems
- Live concerts and stage performances
- Touring audio systems
- Theatres and entertainment venues
- Houses of worship
- Broadcast and production studios
- Conference and event systems
- Professional audio rental systems
- Multi-channel UHF installations
AC680 Technical Specifications
| Item | Specification |
|---|---|
| Model | AC680 |
| Product Type | UHF Wireless Monitoring Antenna Combiner |
| Frequency Range | 400–950 MHz |
| Distribution Attenuation | 0 dB (±1 dB) |
| Maximum RF Input Power | 30 mW per input |
| RF Impedance | 50 Ω |
| Power Supply | 12 V DC, 3 A |
| Operating Temperature | −10°C to +55°C |
| Enclosure Dimensions | 210 × 175 × 51 mm |
AC-M1 Signal Enhancement Integrator
The AC-M1 signal enhancement integrator can be used with the AC680 system to provide RF signal routing and coaxial power distribution. Its adjustable output supports flexible system configuration for antennas and connected RF equipment.
AC-M1 Technical Specifications
| Item | Specification |
|---|---|
| Frequency Range | 460–960 MHz |
| Working Voltage | 9 V, coaxial power supply |
| Working Current | 110 mA |
| Output 1 | No gain |
| Output 2 | 0–31 dBm |
Why Choose the AC680?
The AC680 combines wideband UHF operation, four-channel signal integration and shared-antenna functionality in a compact professional system. It is a practical solution for reducing antenna complexity and organizing RF transmission in concerts, theatres, rental systems and other multi-channel wireless monitoring applications.

