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Audio Wireless DADM224 Diversity Antenna Distribution Module
DADM224 is a custom design which offers the solution to antenna and power distribution requirements for portable sound bags.
A unique custom design, Antenna and Power Distribution system offers excellent rejection for interference free operation feeding up to four Diversity Receivers. User adjustable settings can be controlled via the intuitive OLED display menu. Used to power remote antenna amplifiers, to turn each receiver ON/OFF, and to turn Hirose dc output volts within the frequency range from 470 – 700MHz.
The DADM224 is fitted with 2 x BNC as Antenna inputs and 2 x 4 SMA Antenna output connectors, with switchable Remote Antenna Powering. The six switchable DC Hirose power sockets supply dc power to sound bag or sound cart equipment. DADM224 is a CNC machined aluminium box to withstand daily location work, finished in black anodising with clearly laser marked legends for long term readability.
Specifications
| RF Distribution Section | |
| Frequency Range | 470 to 700MHz |
| Input Impedance | 50 Ω |
| Output Impedance | 50 Ω |
| Gain (each output) | +6 dB to -10dB, user adjustable |
| Current Consumption | 185mA |
| UHF Bandpass Type | |
| Bandwidth | 470-700MHz, (others available on request only) |
| OIP3 | > +41dBm |
| Port to port isolation | > 20dB (min.) |
| Noise figure | < 3 dB |
| Connections | |
| RF Inputs | 2 x 50 Ω Standard BNC Sockets |
| RF/DC outputs to receivers | 2 x 4 x 50 Ω mini UHF SMA sockets |
| Main ON/OFF Switch | Master switch |
| DC Power OUT | 6 x 4-pin Hirose sockets individually fused and protected against reverse polarity, standard pin-outs, Pin1(-ve) and Pin4(+ve) |
| Powering | |
| External Power | 10-18V @ 1A (min.)*, reverse power and short circuit protected (*higher current limit is required if mixer/recorders are powered-max current 2A) |
| Phantom dc to Receivers | 9Vdc (regulated), individually switched ON/OFF |
| 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 fused and protected against reverse polarity |
| Outer Case | |
| Dimensions | 190x64x30mm (W x H x D) |
| Weight | 400g |
| Related Accessories |
8 x SMA to SMA link cables (custom lengths) |
