1. Introduction
The BOMGE UHF Wireless Antenna Distribution System is a professional solution designed to enhance signal reception and distribution for wireless microphone systems. It features active directional antennas, 8 outputs, and 2 cascade ports, providing extended long-range coverage up to 988ft (300m). This system is built with durable metal materials, ensuring reliable performance in various professional audio environments such as stages, gigs, live shows, conferences, and large-scale outdoor events.
Figure 1: BOMGE UHF Wireless Antenna Distribution System overview.
2. Package Contents
Please check the package carefully to ensure all items are present and in good condition:
- 1 x UHF Antenna Distribution System Unit
- 2 x Directional Antennas
- 1 x Power Supply
- 1 x Power Cable
- 4 x Power DC Lines
- 1 x User Manual
- 2 x Wing Cables
- 10 x Mic Connection Lines
Figure 2: Contents included in the product package.
3. Setup Instructions
3.1 Antenna Placement Precautions
- The installation height of the antenna should be higher than 1.8 meters for optimal reception.
- The antenna needs to be placed within the range of the signal transmitter and at a distance greater than 1.5 meters from it. Ensure there are no obstructable blocks between the antenna and the transmitter.
- The antenna should be positioned away from large metal objects and various signal interference sources.
- When used outdoors, place the antenna in a dry position to prevent damage.
Figure 3: Correct and incorrect antenna placement for optimal signal.
3.2 System Connection Method
Follow these steps to connect your UHF Wireless Antenna Distribution System:
- Connect the two directional antennas (ANT-A and ANT-B) to the corresponding ANTENNA IN ports on the distribution system unit.
- Connect the power supply to the distribution unit and plug it into an AC power source.
- Use the provided Mic Connection Lines to connect the RF OUTPUT A and RF OUTPUT B ports of the distribution system to your wireless microphone receivers. The system supports 8 outputs, allowing connection to 4 dual wireless receivers.
- If expanding your system, use the CASCADE ports to connect another antenna distribution system or additional wireless receivers.
Figure 4: Connection diagram for multiple wireless microphone systems.
Figure 5: Comprehensive wiring diagram for the antenna power distribution system.
4. Operating Instructions
4.1 Powering On/Off
Connect the power cable to the distribution unit and a suitable AC power outlet. Press the power button on the front panel to turn the system on or off.
4.2 Adjusting Antenna Gain
The directional antennas feature a gain switch to compensate for insertion loss and match different operation ranges. There are 18 gain settings available, offering up to +12dB boost. Adjust the gain according to your environment and signal strength requirements to optimize reception and minimize interference.
- Gain Settings: +12dB, +6dB, 0dB, -6dB, -12dB (and intermediate settings)
- Monitor the RF overload indicator on the antenna unit. If the indicator lights up, reduce the gain setting to prevent signal distortion.
Figure 6: Directional antenna with gain switch and RF overload indicator.
4.3 Cascade Port Usage
The two 50Ω BNC antenna cascade ports allow for system expansion. You can connect an additional antenna distribution system or a fifth wireless receiver to these ports to accommodate larger setups and increase the number of wireless channels.
5. Maintenance
To ensure the longevity and optimal performance of your BOMGE UHF Wireless Antenna Distribution System, follow these maintenance guidelines:
- Cleaning: Regularly wipe the units and antennas with a soft, dry cloth. Avoid using abrasive cleaners or solvents that could damage the finish or internal components.
- Environmental Protection: The system features anti-corrosion and anti-oxidation properties. However, for outdoor use, always ensure the antennas are placed in a dry position to protect against moisture.
- Cable Management: Keep all cables neatly organized and free from kinks or excessive bending to prevent damage and ensure reliable signal transmission.
- Storage: When not in use for extended periods, store the system in a cool, dry place, preferably in its original packaging or a protective case.
6. Troubleshooting
If you encounter issues with your antenna distribution system, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No signal or weak signal |
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| Signal dropouts or intermittent signal |
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| System does not power on |
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7. Specifications
| Feature | Detail |
|---|---|
| Model Number | BAM-844 |
| Brand Name | BOMGE |
| Type | Signal Processing |
| Power Source | AC |
| Inbox Adaptor | Yes |
| Built-in Battery | No |
| Origin | Mainland China |
| Frequency Range | 470-950 MHz |
| Antenna Gain Settings | 18 settings, up to +12dB |
| RF Signal Boost | Approx. 6dB at 50Ω impedance |
| Outputs | 8 (for 4 dual wireless receivers) |
| Cascade Ports | 2 x 50Ω BNC |
| Transmission Range | Up to 988ft (300m) |
| Package Length | 55 cm |
| Package Width | 41 cm |
| Package Height | 13 cm |
| Package Weight | 5.7 kg |
8. User Tips
- Antennas Included: The package explicitly includes the necessary directional antennas, so there is no need to purchase them separately.
- Bracket Note: While the antennas are included, mounting brackets for the antennas are typically for display purposes in promotional images and may need to be purchased separately if required for your specific setup.
- Power Compatibility: Ensure you select the correct voltage version (e.g., 110V US or 220V EU) for your region to avoid electrical issues.
Figure 7: 110V US Plug variant of the system.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the contact information provided by your retailer or the official BOMGE website. Keep your purchase receipt as proof of purchase for any warranty claims.
