Audio Wireless DADM228-P Diversity Antenna Distribution Diversity Antenna Distribution Module DADM228-P is a custom design, which offers the solution to antenna and power distribution requirements for portable sound bag and sound trolley applications. Designed for where the weight and size matters without sacrificing on performance.
The DADM228-P is a 2xIN and 2x8 OUT active antenna distribution system with in-built band-pass filtering; the DADM228 eliminates multiple receiver antennas and provides a tidy sound bag solution with improved RF performance.
The DADM228-P has a very high input signal handling capacity with very low noise figure and offers an outstanding inter-modulation performance when compared to other low power devices available.
The system box offers, +6dB to -10dB gain user adjustable in 1dB steps to suit individual applications. The user adjustable gain offers flexibility optimising system RF gain budget to suit, Digital, Hybrid and Analogue receivers.
There are two industry standard BNC input connectors for antenna inputs which enables use of standard low loss RF extension cables, and there 2x8 mini-RF SMA connectors feeding the diversity receivers.
In applications when remote antenna powering is needed, the DADM offers switchable MHA powering with RED LEDs indicating power ON/OFF status, the MHA powering can be turned ON/OFF through the OLED display menu.
The antenna inputs compromise a very low loss very selective band-pass filter designs to reject unwanted frequencies below and above the tuning bandwidth.
The DADM is externally powered between 10-18Vdc, the dc input connector is an industry standard 4-pin Hirose, a green LED indicates power-on status of the system box and the OLED display continuously displays dc input voltage.
The DC distribution is with 6xHirose dc output connectors for powering auxiliary equipment in any sound bag. Each dc output port can be individually turned ON/OFF through the OLED menu.
Audio Wireless Diversity Antenna and dc power distribution systems are now first choice among freelance sound engineers, hiring companies as well as major broadcasters for all wireless microphone applications.Key features:- One pair of antenna feeds up to eight diversity receivers
- Built-in band-pass filtering and signal splitters
- User adjustable gain
- Remote antenna powering
- 6 x Hirose dc outputs
- Industry standard connectors
- Intuitive OLED display menu and LED indicators
- Single power source solution
- Master ON-OFF switch
- Continuous system volts monitoring
- Soft ON/OFF switch for each individual Remote Antenna powering
- Soft ON/OFF switch for each Hirose dc output
- CNC machined aluminium custom design, lightweight and rugged - fits neatly in any sound bag or sits in the cart
Further details Frequency range supplied as standard: 470 to 700MHz
Other bands available to order (please contact us):
470-608MHz
470-663MHz
470-960MHz
960-1164MHz Input Impedance: 50 Ω
Output Impedance:50 Ω
OIP3: >+41dBm
Gain (each output): +6 dB to -10dB, adjustable in 1 dB steps
Current Consumption: 135mA@14V
ConnectionsAntenna inputs: 2 x 50 Ω Standard BNC sockets
Output to receivers: 2 x 8 x 50 Ω mini-UHF SMA sockets Main ON/OFF Switch: Master switch
DC Power OUT: 6 x 4-pin (2 panels x 3) Hirose sockets individually fused and protected
DC IN pinouts: Pin1&2 (ground) and Pin3&4 (+dc)
DC OUT pinouts: Pin1 (ground) and Pin4 (+dc) PoweringExternal Power:10-18V dc (polyfused, reverse power protected)
Remote Antenna Powering: Switchable dc T-bias powering, 12Vdc @ 200mA max, regulated for active antenna powering, short circuit protected
Hirose dc output: Unregulated incoming volts, switched, individually polyfused and protected against reverse polarity
Remote Antenna Powering: +12Vdc@250mA, regulated, short circuit protected Outer CaseDimensions: 192x42x64mm (W x H x D)
Weight: 500g
Related accessories:
LPDA-DIV
LPDA-P
LPDA-A-WB
LPDA-A-DT V2
Mono-pole ¼ wave wide-band BNC antenna
Custom length RF Link cables
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