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2-Zone Antenna Combining and Distribution System AC224.
RF filtering protects receivers from interfering signals and unwanted RF, ensuring continuous reception during diversity operations.
- 2-Zone Combiner, RF and DC distribution system
- Four antennas feed up to four diversity receivers
- Custom-tuned band-pass filtering at each antenna input
- Remote antenna powering at each antenna input
- Independent 4xHirose dc outputs
- User-adjustable system gain at each antenna input
- BNC industry standard connectors
- Intuitive colour TFT display menu and LED indicators
- Single DC power source solution
- Soft master ON-OFF switch
- Continuous system volts monitoring
- Soft ON/OFF switch for each Antenna Input LNA gain settings
- Soft ON/OFF switch for each Remote Antenna powering settings
- Soft ON/OFF switch for each DC output port settings
- Custom CNC-machined aluminium design, lightweight and rugged - fits neatly in any sound cart, trolley and sound bag
AC224 is a custom-designed antenna combiner and distribution module, featuring 2-zone antenna combining and DC power distribution. It is designed for applications where weight and size are critical, without compromising performance.
The AC224 is an active antenna combiner and distribution system featuring 2x2 inputs and 2x4 outputs. It includes built-in front-end low-loss band-pass filtering, a low-noise amplifier (LNA), and a user-adjustable gain stage at each antenna input. The AC224 allows users to cover a wider area across two zones for cart and trolley set-up applications, resulting in improved RF coverage and performance. Additionally, it offers a compact solution for sound bag applications with its 2x1 input and 2x4 output configuration.
The device features four industry-standard BNC antenna input connectors, allowing for the use of standard low-loss RF extension cables. Additionally, eight mini-RF SMA connectors supply the diversity receivers. Each antenna input can be individually turned ON or OFF through the display menu when not in use, and an LED indicator shows the status of each antenna input.
In applications that require remote antenna powering, the AC224 provides individually switchable remote antenna powering. LEDs indicate the power status, and the Active Antenna Powering can be turned ON or OFF through the display menu.
The AC224 has a high input signal handling capacity, very low noise figure, and outstanding inter-modulation performance compared to other low-power devices.
The frequency range is custom-tuned according to the customer's specifications. The front-end band-pass filter is designed for very low loss while maintaining high selectivity at both lower and upper frequencies. Each antenna input gain can be individually adjusted by the user in 1 dB increments. The AC224 is compatible with a range of radio microphone receivers in the industry, including full-digital, digital-hybrid, and analogue models.
A large colour TFT display provides user-selectable colour combinations for optimal lighting and visibility. Brightness can be adjusted through the display menu to enhance visibility.
The AC224 requires external power within a range of 10-18 VDC. It uses a standard 4-pin Hirose connector for the DC input. Additionally, it features a DC distribution system with four Hirose output connectors for powering auxiliary equipment. Each DC output port can be individually turned on or off through the display menu. A voltmeter continuously monitors the input voltage.
Audio Wireless systems with a wide tuning range are now the preferred choice among freelance sound engineers, rental companies, and major broadcasters for all applications involving wireless microphones.
| RF Distribution Section | |
| Frequency Range | 470 to 1260MHz (in bands) |
| Input Impedance | 50 Ω |
| Output Impedance | 50 Ω |
| Gain* | +6dB to -10dB(nom.), user-adjustable in 1dB steps * 470-1164MHz and 470-1260MHz bands gain set at +2dB to -10dB(nom.), user-adjustable in 1dB steps |
| Current Consumption | 300mA+/-20mA @ 12.0V dc (depends on display brightness setting) |
| UHF Bandpass Type | |
| Available Bandwidths (to order) |
470-1164MHz (Covers UK DME BAND), 470-960MHz, 470-608MHz, 470-700MHz, 470-663MHz, 470-865MHz, 510-622MHz, 960-1164MHz (UK DME BAND), 470-1260MHz (Covers Japan Band) |
| OIP3 | > +41dBm |
| Port-to-port isolation | > 20dB (min.) |
| Noise figure | < 3dB |
| Connections | |
| RF Inputs | 4x50Ω Standard BNC Sockets |
| RF outputs | 8x50Ω mini-UHF SMA sockets |
| DC Power IN | 4-pin Push-Pull - Hirose Compatible socket, fused and protected against reverse polarity, 10-18V dc |
| DC Power OUTPUTS | 4x4-pin Push-Pull - Hirose compatible sockets |
| DC IN pinouts | Pin 1+2 (-ve) and Pins 4+3 (+ve) |
| DC OUT pinouts | Pin 1+2 (-ve) and Pins 4+3 (+ve) |
| Powering | |
| Operating voltage range | 10-18V, input reverse power, and short circuit protected |
| Remote Antenna Powering | Switchable DC T-bias powering, 12Vdc @ 500mA max, regulated for active antenna powering, short circuit protected |
| Hirose DC output |
Unregulated incoming volts, menu-driven - switched, protected against reverse polarity. |
| Total Current Distribution | 3A (max.) |
| Outer Case | |
| Dimensions | 192x83x36mm (W x H x D) |
| Weight | 500g |
| Related Accessories | 8 x SMA to SMA link cables (custom lengths) 2 x LPDA-DIV 4 x LPDA-P 4 x LPDA-A-WB V2 4 x LPDA-A-DT V2 4 x LPDA-A-DB (470-700MHz and 960-1164MHz inc. UK DME Band) |
updated on 24.05.26
