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ASDGB449 Digital Burst Audio System
The Mustang is a specialized covert audio transmitter and receiver system for authorized U.S. federal operations that require discreet placement, remote control, long standby potential and reduced continuous RF exposure. Instead of transmitting an uninterrupted carrier, Mustang sends short packets of encrypted digital audio and allows an operator to manage as many as 16 deployed transmitters from the receiver.
Mission-Critical Advantages
Mustang combines a compact body-worn or fixed-position transmitter with a bidirectional receiver architecture that lets monitoring personnel change essential operating parameters without physically recovering the deployed unit.
Short audio-data bursts replace an uninterrupted transmission stream, reducing transmitter duty cycle and making casual interception more difficult than with a conventional continuous carrier.
Use the receiver to turn transmission on or off, change output power, select power-save or VOX operation, choose a microphone, and change the channel or transmitter address.
Address and control as many as 16 Mustang transmitters operating in the same general area from a properly configured receiver.
With transmission and VOX disabled, the published standby current is only 235 picoamps, supporting stated standby potential beyond one year with an appropriate alkaline battery.
Select 150 mW or 50 mW RF output, standard or power-save audio, VOX activation, and either the internal audio input or an external microphone.
The transmitter measures approximately 1.1 x 0.31 x 1.38 inches and weighs 0.88 ounces, allowing body-worn, vehicular, structural and other covert installations.
Operational Workflow
Place the compact transmitter in an authorized body-worn, vehicle, structure or fixed concealment with the mission-appropriate microphone and power source.
From the receiver, select the addressed transmitter and remotely adjust power, channel, audio source, power-save mode or voice activation as operational conditions change.
Receive the encrypted burst-audio packets through the portable whip antenna or an agency-selected SMA antenna configuration appropriate to the deployment.
Specialized Applications
The Mustang digital burst listening system can support appropriately authorized operations such as:
Remote Operational Control
The included receiver does more than monitor audio. It sends control commands back to individually addressed Mustang transmitters, giving operators flexibility as mission conditions, battery priorities and audio requirements change.
Technical Overview
MAXSUR will confirm the current encryption configuration, operating frequencies, antenna selection and power architecture for the purchasing federal agency.
| Specification | Mustang transmitter | Included control receiver |
|---|---|---|
| Primary function | Encrypted digital burst audio transmission | Audio reception and remote transmitter control |
| Data rate | 76.8 kbps | |
| Sampling frequency | 8.26 kHz | |
| Audio bandwidth | 0.1-3.8 kHz | |
| Published encryption specification | 56-bit code; confirm the current production configuration with MAXSUR | |
| Transmission behavior | 84 ms packets; 193 ms standard interval or 1,186 ms power-save interval | Receives and reconstructs the packetized audio stream |
| Audio latency | Not applicable | 180 ms standard; 270 ms power-save |
| RF output | 150 mW high or 50 mW low | 150 mW remote-control output |
| Channels and addressing | 10 published channels; 16-bit address with 16 receiver-selectable identities | Selects transmitter channel and address |
| Maximum stated range | Over 2 miles line of sight under favorable conditions with published antenna configuration | |
| Power requirement | 3.6-9 VDC | 3.6-12 VDC external or 6 VDC internal |
| Current consumption | 45-140 mA transmitting, depending on power and power-save settings; 235 pA with transmission and VOX off | 42 mA receive mode; 140 mA transmit/control mode |
| Audio input/output | Internal or external input, selectable | 3.5 mm line-level output |
| Voice activation | VOX response under 1 second; 10-second follow-up time | Remotely selectable |
| Antenna | Wire antenna | SMA connection; rubber whip included |
| Dimensions | 1.1 x 0.31 x 1.38 in. (27 x 8 x 35 mm) | 3.15 x 1.26 x 4.53 in. (80 x 32 x 115 mm) |
| Weight | 0.88 oz. (25 g) | 11.18 oz. (317 g) |
| Warranty | Two years | |
| Availability | Restricted to U.S. federal agencies; not available for export | |
Range is not guaranteed and varies with antenna selection, placement, body loading, terrain, structures, vehicles, interference, frequency, receiver setup and other field conditions. Standby estimates depend on battery type, capacity, age, temperature and configuration. Frequencies and system use are subject to agency requirements, licensing and applicable authorization.
Complete System
Buyer Questions
Mustang sends short packets of digital audio rather than maintaining a conventional continuous audio carrier. It also allows the included receiver to remotely activate and reconfigure an individually addressed transmitter.
The published Mustang specification identifies 10 discrete operating channels that can be selected remotely from the receiver. It does not describe a continuously changing automatic frequency-hopping sequence. Contact MAXSUR to confirm the operating behavior and current configuration required by your agency.
The receiver can address and issue commands to as many as 16 properly configured transmitters deployed in the same general area. Channel planning, address assignment and RF conditions affect the practical deployment architecture.
Operators can remotely turn transmission on or off, select high or low RF power, enable power-save operation, choose internal or external audio input, enable VOX, and select the transmitter channel and address.
The published current draw with transmission and VOX disabled is 235 picoamps, and the manufacturer literature states potential standby beyond one year with an ordinary alkaline battery. Actual standby life depends on the complete power system, battery type and condition, temperature and field configuration.
The published system performance is over two miles line of sight under favorable conditions. Actual range varies with transmitter placement, antennas, terrain, structures, vehicles, RF interference, frequency, power mode and receiver setup.
The published system is restricted to U.S. federal agencies and is not available for export. Contact MAXSUR at ops@maxsur.com or 1-314-270-2150 to confirm eligibility and obtain an official quote.
Talk With MAXSUR
Tell us about the deployment duration, concealment, transmitter count, standoff distance, antenna environment and control requirements. MAXSUR will confirm eligibility and help configure the Mustang system for your federal agency.
Restricted and authorized use only: The Mustang is restricted to U.S. federal agencies and is not available for export. Covert audio surveillance equipment must be purchased, configured and deployed in accordance with applicable law, agency policy, licensing requirements and appropriate legal authorization.
