Audio Wireless AD224 4-Way Antenna Distribution System

Built for sound bag use, the Audio Wireless AD224 is a 4-way antenna distribution system that feeds up to four diversity receivers from one pair of antennas.

Custom-tuned band-pass filters at the front end clean up the RF within the operating band before it reaches the receivers, keeping unwanted signals in a crowded spectrum out. One pair of antennas takes the place of the antennas each receiver would otherwise need.

Two BNC inputs take standard low-loss coaxial extension cables, and eight SMA outputs (2 × 4) feed the receivers. System gain is adjustable in 1 dB steps from +6 dB to -10 dB, and power to active antennas is switchable. The AD224 works with full-digital, digital-hybrid, and analog radio mic receivers.

It runs on 10 to 18 V DC through a 4-pin Hirose input, and a built-in voltmeter shows the input voltage on the TFT display. The case is CNC-machined aluminum. The AD224-P adds four switched Hirose DC outputs for powering other gear.

Features

One pair of antennas feeds up to four diversity receivers
Custom-tuned band-pass filtering
Gain from +6 dB to -10 dB in 1 dB steps
Switchable powering for each active antenna
Two BNC inputs and eight SMA outputs
TFT display menu with LED indicators
Built-in DC voltmeter
Runs on 10 to 18 V DC
CNC-machined aluminum case

Available Options

Frequency Band	Span	SKU
470-608 MHz	138 MHz	AUD.AD224.608
470-700 MHz	230 MHz	AUD.AD224.700
470-938 MHz	468 MHz	AUD.AD224.938
470-960 MHz	490 MHz	AUD.AD224.960

What's Included

AD224 antenna distribution system
8 × SMA-RA to SMA-RA RF link cables
2 × BNC-RA to BNC-S antenna extension cables

Specifications

Inputs	2 × BNC sockets, 50 Ω
Outputs	8 × SMA sockets (2 × 4), 50 Ω
Gain	+6 dB to −10 dB, adjustable in 1 dB steps
OIP3	> +41 dBm
Port-to-Port Isolation	> 20 dB minimum
Noise Figure	< 3 dB
Remote Antenna Powering	Switchable DC T-bias, 12 V DC at 250 mA maximum, regulated, short-circuit protected
DC Input	4-pin Hirose-compatible socket, 10 to 18 V DC, fused, reverse-polarity protected
Display	TFT display menu; LED indicators
Dimensions	163 × 67 × 36 mm (6.42 × 2.64 × 1.42 in)
Weight	380 g (13.4 oz)