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ASDG544 Wireless Digital Audio System
The Phantom ASDG544 is a remotely managed digital body wire system for authorized law-enforcement and government operations. It combines secure QPSK wireless audio, a user-selectable code with 65,000 possible combinations, remote transmitter power and RF control, long standby capability, and an integrated recorder in the monitoring receiver.
Mission-Critical Advantages
Phantom gives the monitoring team direct control over important transmitter functions while keeping the undercover operator's equipment compact and straightforward.
Monitoring personnel can turn the transmitter off when live audio is not required and reactivate it later without physically recovering or handling the deployed unit.
Remote activation helps conserve the transmitter's internal rechargeable battery and supports published standby periods exceeding two months.
Select low power for shorter-range or battery-conscious deployments and high power when the operation requires additional RF output.
Proprietary QPSK modulation works with a manually selectable five-position code, providing 65,000 possible system combinations.
The receiver captures monitored audio to removable microSD media for later review, export and authorized evidentiary workflows.
Use the built-in Knowles microphone or connect an external microphone. The receiver's female SMA connection also supports mission-specific antenna options.
Operational Workflow
Conceal the compact Phantom transmitter on an undercover officer, confidential informant or within another authorized deployment using the internal or an external microphone.
From the receiver, authorized monitoring personnel can remotely activate or disable transmission and adjust the transmitter's power or operating frequency as conditions change.
Listen to the live digital audio and record it at the receiver to removable microSD media, with a published recording capacity of up to 40 hours.
Undercover Applications
The Phantom digital body wire can support appropriately authorized missions such as:
Remote Operational Flexibility
The purpose-built receiver provides remote-control functions in addition to live monitoring and recording. This allows the surveillance team to respond as mission conditions, battery priorities and RF requirements change.
Reception and Antenna Planning
The Phantom includes a portable wideband rubber whip antenna. When additional reception performance is required, the receiver's female SMA connection supports compatible high-gain, mobile, vehicle-mounted and other application-specific antenna configurations.
The published performance is up to approximately 1.1 miles under favorable line-of-sight conditions. The specification sheet also cites approximately 500 feet through residential construction in a reported test. Actual results vary with transmitter placement, buildings, terrain, vehicles, antenna selection, interference and local RF conditions.
Technical Overview
MAXSUR will confirm the current operating frequencies, system coding, accessories and agency-specific configuration in the official quotation.
| Component | Specification | Published Detail |
|---|---|---|
| Transmitter | Digital frequency range | 875 to 915 MHz; 200 kHz steps |
| Transmitter | RF output | +10 dBm low power / +20 dBm high power |
| Transmitter | Modulation and audio coding | QPSK modulation; nonlinear PCM audio coding |
| Transmitter | Power source | Internal 3.6 V, 230 mAh rechargeable LiPo battery |
| Transmitter | Published operating time | More than 2 months standby; up to 6 hours low power; up to 2 hours high power |
| Transmitter | Microphone | Built-in Knowles microphone; external microphone connection |
| Transmitter | Dimensions | 0.9 x 1.88 x 0.47 in. (23 x 48 x 12 mm) |
| Transmitter | Charging time | Less than 90 minutes with specified 5 VDC charger |
| Receiver | Digital reception | 875 to 915 MHz; QPSK; published sensitivity -95 dBm |
| Receiver | Digital channel capacity | Up to 200 channels |
| Receiver | System coding | Five-position manually selectable code; 65,000 possible combinations |
| Receiver | Analog reception | 400 to 465 MHz; WFM and NFM |
| Receiver | Power and runtime | Internal 3.7 V, 2000 mAh LiPo battery; up to 24 hours |
| Receiver | Charging and operation | Mini USB connection |
| Receiver | Dimensions and weight | 2.64 x 5.0 x 1.61 in. (67 x 126 x 41 mm); approximately 8 oz. (220 g) |
| Receiver Recorder | Media and capacity | Removable microSD card; up to 2 GB; up to 40 hours stated recording time |
| Receiver Recorder | File format | Encrypted .AU files; included software is required for decryption |
| System | Published range | Up to approximately 1.1 miles line of sight; results vary by environment and configuration |
| System | Warranty | One year |
Specifications are based on the supplied Phantom ASDG544 documentation and are subject to change. Frequency availability, licensing, configuration, range, runtime and operational performance depend on agency requirements and deployment conditions.
Complete System
Buyer Questions
Phantom combines digital QPSK transmission, a configurable code with 65,000 possible combinations, remote transmitter activation, selectable high and low RF power, long standby capability, and recording at the receiver. It gives the monitoring team more control over when and how the transmitter operates.
No. Phantom records the audio at the monitoring receiver. If the mission requires recording at the body-worn transmitter while simultaneously transmitting live audio, consider the Hornet digital body wire.
Yes. The Phantom receiver can remotely disable and reactivate a properly configured transmitter. This can conserve battery power and reduce transmission when live monitoring is not needed.
Yes. The published transmitter output is +10 dBm in low-power mode and +20 dBm in high-power mode. Low power supports longer stated operating time, while high power provides additional RF output when required.
The receiver includes an analog mode covering 400 to 465 MHz with WFM and NFM reception. MAXSUR will confirm compatibility with an agency's existing analog transmitters and operating frequencies.
The published recorder capacity is up to 40 hours on microSD media up to 2 GB. Recordings are stored as encrypted .AU files and require the included software for decryption.
The published maximum is approximately 1.1 miles under favorable line-of-sight conditions. The specification sheet also reports approximately 500 feet through residential construction. Actual range varies with transmitter placement, structures, vehicles, terrain, interference and antenna configuration.
The Phantom is intended for authorized law-enforcement, government and other qualified public-safety customers. MAXSUR will confirm customer eligibility, frequency requirements and the final system configuration before sale.
Agency Pricing and Configuration
Tell the MAXSUR team about your mission, operating environment, monitoring requirements and preferred accessories. We will help configure the appropriate Phantom system and provide an official agency quotation.
