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Motorola XPR 8400

Motorola XPR 8400 Repeater

Motorola XPR 8400 UHF 450-512 Mhz 40W MOTOTRBO Repeater w/ Duplexer

Status: Discontinued

Motorola XPR 8400 Repeater/Base Station

Motorola has canceled the XPR 8400 repeater. If you are looking for a replacement repeater, please check out our current Motorola repeater models.

Maximize the performance of your MOTOTRBO™ system. Extend range and overcome signal obstructions to ensure reliable communication between multiple locations or a single site. Features vary from integrated data applications to analog-digital migration capabilities. Supports two simultaneous voice or data paths in digital mode, doubling capacity without adding new frequencies.

With extended radio coverage and expanded voice and data capability, this multi-site digital trunking solution enables you to accommodate the high volume, wide area communication that’s required to keep your mobile work teams connected.

The Motorola XPR 8400 Repeater is the backbone of most Motorola Mototrbo systems deployed today. This repeater does it all by not just expanding the coverage area but also by offer advanced features for when you need to expand to a larger system. The XPR 8400 advanced repeater functions allow you to connect remote offices, double the capacity, and deploy data applications.

Feature Highlights

Reliable Performance:
Runs 100% continuous full-duty cycle at 40 Watts.

TDMA Digital Technology:

Time-division multiple-access (TDMA) provides twice the calling capacity for the price of one license.

Easy Installation:

Wall- or rack-mountable, with sturdy handles.

Transmit Interrupt:

Enables intervention during conversations to deliver critical communication exactly when and where needed.
Dynamic Mixed Mode:
Allows for automatic switching between analog and digital mode for mixed radio fleets.

Repeater Diagnostics and Control:

Monitor and manage your system via the Repeater Diagnostics and Control utility.

IP Repeater Programming:

Use Internet Protocol (IP) at a central location to complete programming changes and upgrades on remotely located repeaters.

Digital Telephone Interconnect:

Communicate between radios and landline or mobile phones.

SCADA Solutions:

Supervisory Control and Data Acquisition (SCADA) solutions are designed to monitor and control equipment located at remote, unmanned sites. With MOTOTRBO, you can now combine SCADA data and voice communication over the same reliable network.

Additional Features

  • 100% continuous duty at 40W/UHF, 45W/VHF and 35W/800 MHz
  • Supports two simultaneous voice or data paths in digital TDMA mode
  • Integrated power supply with connector for optional external DC battery backup
  • Operates in analog or digital mode
  • LED’s clearly indicate transmit and receive modes in both channel slots
  • Rack or wall-mountable
  • Sturdy handles for easier installation and handling
  • Transmit Interrupt function
  • Dynamic Mixed Mode automatic switching between analog and digital mode for mixed radio fleets
  • Diagnostics and Control utility
  • IP Repeater Programming uses Internet Protocol (IP) at a central location to complete programming changes and upgrades on remotely located repeaters
  • Digital Telephone Interconnect
  • Available frequency and power options**:
    • VHF 136-174 MHz / 25 W
    • VHF 136-174 MHz / 45 W
    • UHF 403-470 MHz / 25 W
    • UHF 403-470 MHz / 40 W
    • UHF 450-512 MHz / 40 W
    • 806-870 MHz & 896-941 MHz / 35 W (Dual Band)


Motorola MOTOTRBO repeater model number: AAM27TRR9JA7BN.

Frequency Compatibility

Type/Style: Analog, Digital, Trunking
Frequency Range: 806-941 MHz

Technology Compatibility


Analog technology is a legacy method of communication that enables the transmission of voice between users over dedicated frequencies. While analog technology has served its purpose effectively for decades, it is rapidly being replaced by digital technology, which offers enhanced clarity, security, and efficiency in communication. Digital technology also provides for the ability to incorporate data protocols, whereas analog operation is typically voice communication only. Nevertheless, analog technology remains a critical part of the legacy infrastructure for many land mobile radio systems, particularly in regions where digital upgrades may still be pending.


Digital technology represents a modern approach to wireless communication. Unlike analog technology, which uses continuous waveforms, digital technology encodes voice and data into discrete, binary code. This transformation allows for more efficient and secure transmission of information over radio waves. Digital technology offers several advantages, including improved voice clarity, reduced interference, and the ability to transmit data alongside voice communication. It also enables advanced features like encryption for secure conversations, GPS tracking for location services, and the integration of various applications for enhanced functionality. Digital technology has become the standard for many public safety agencies, commercial businesses, and organizations relying on reliable and efficient communication in their operations, making it a crucial component of modern land mobile radio systems.

Radio System Compatibility

Supports All MOTOTRBO System Types

Whether you need the simplicity of a single site conventional system, or the powerful trunking capabilities of Capacity Plus, Linked Capacity Plus or Connect Plus, the XPR 8400 repeater delivers the power of digital two-way radio to your workforce. It can also operate as an analog repeater, or as a mixed mode analog/digital repeater while you transition away from a legacy analog system.
The XPR 8400 repeater supports the full MOTOTRBO feature set, and is compatible with all the MOTOTRBO system architectures: single site conventional, IP Site Connect, Capacity Plus, Linked Capacity Plus and Connect Plus. The IP interface allows you to build applications and consoles directly into your system.

Motorola Two-Way Radio Systems

Direct Mode

All MOTOTRBO two-way radios have the capability to connect directly: radio-to-radio, for basic voice, data, text, and application support. However, this approach has limitations.


A conventional system is a step up from basic radio-to-radio communications. Radios communicate via a high-power repeater, giving better coverage and more centralized control.

Capacity Plus

Expand the capacity and extend the coverage of MOTOTRBO digital two-way radios with this entry-level digital trunking system. Up To 15 Sites / Up To 1600 Users Per Site*

Florida Two-Way Radio Specialists

Speak to the experienced team at EMCI Wireless to find the perfect solution for your business.