£349.00 (excluding VAT)

ADB-720-MA-4000 Crypto Level II Digital Modules – 32 bit Key

Available on back-order


ADB-720-MA-4000 Digital Encryption Modules
(Option board for Motorola MOTOTRBO)

ADB-720-MA-4000 Crypto Level II Digital Modules – 32 bit Key

The ADB-720-MA-4000 is designed for simple plug-in installation into MOTOTRBO VHF/UHF mobile and portable radios.

Additional information

Weight 0.5 kg
Dimensions 13 × 9 × 4 cm

ADB-720-MA-4000 Technical

The ADB-720-MA-4000 voice security module for two-way radios uses advanced digital encryption to provide high level protection (Class II) of radio communications traffic from eavesdropping by unwanted listeners and the most determined adversaries. It uses a highly secure AES encryption algorithm with over four billion key combinations to provide discreet and confidential communications. The ADB-720-MA-4000 module is a cost-effective solution for high-end voice encryption for portable and mobile radios used by commercial entities, police departments, public safety organizations, and militaries as a defense against unauthorized interception of private and sensitive voice transmissions by casual eavesdroppers or the most determined listeners that may be a threat to property or life.

The ADB-720-MA-4000 series module ensures that sensitive communications are safe and secure, utilizing a sophisticated encryption algorithm to thwart attacks on private communications. When an eavesdropper attempts to listen to an encrypted conversation, the speech transmission will not be heard at all. There will be no vocalization; instead the unwanted listener will hear only “white noise”. Digitization of the sender’s speech also ensures that the encrypted voice transmission will be clear and easy to understand, which is often vital in emergency situations and military operations.

By using a digital communication channel within a radio communication system, the ADB-720-MA-4000 is able to reject background noise, further enhancing speech quality during chaotic or mission critical operations.

The ADB-720-MA-4000 module offers simple, plug-in installation into the DP/DM4000 range (EMEA) portable and mobile radios.

Programming of the module is performed easily via a personal computer (PC). The ADB-720-MA-4000 digital encryption module provides for high level voice security in radio systems utilizing conventional analog repeaters in the 12.5/25 kHz radio spectrum. It can be used in Simulcast, LTR, and voting systems, as well as dispatch systems that offer Check, PTT-ID, OTAR, and GPS location information.

The ADB-720-MA-4000 module offers a programmable “autodetect” option, enabling automatic receive operation while the radio is operated in secure mode. Other optional capabilities include compatibility with frequency inverters using analog keys and compatibility with double-inversion voice band scramblers using analog keys.

Additionally, these modules have a very unique feature that would allow with our technical guidance the end user to apply their own algorithm. Enabling this product to be customer specific.

Versions of the radios
For correct operation of APJ1 Media services modules in the Motorola MOTOTRBO the DP/DM4000 series radios is to have the corresponding version of the firmware and must have an activated Enhanced Audio/Data Routing Option (Part Number SW000449A01).

Note that the radio firmware version is not the CPS software version.

We strongly recommend using the latest firmware version for all radios to prevent compatibility issues.

The firmware version for DP/DM4000 series is to be R02.30.00 or higher.

This module now works fully in both Analog and digital modes.

Motorola Regional Compatibility
European Equipment: DP4400, DP4401, DP4600, DP4601, DP4800, DP4801, SL4000, SL4010, DM4400, DM4401, DM4600, DM4601.

For example: Africa, Asia Pacific, North America, Latin America and Caribbean – Please contact us or view our Mototrbo comparison chart

Programming modules ADB-720-MA-4000
Programming of the ADB-720-MA-4000 module is carried out with our dedicated software using:
Module external programming probe – via ADP-9-USB, 4-pin programming probe.
While fitted inside the radio (Operational) – via the radios standard programming cable.

Installation of modules ADB-720-MA-4000 – PlugIn module
For installation ADB-720-MA-4000 Modules into Portable and Mobile Radios DP/DM4000 Series a special flex is additionally required as part of the radio interface.


See additional information here

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