JMT Two-Way LoRa Signal Booster — 863-870/902-928MHz Power Amplifier Module

Overview

The JMT Two-Way LoRa Signal Booster is a compact, dual-path amplifier designed to extend LoRa links across diverse environments. Covering Europe 863-870 MHz and US 902-928 MHz, this module delivers symmetric enhancement for receive and transmit paths, enabling longer reach and more reliable connections in LoRa ecosystems, routers, Ethernet setups, and RC drones.

In practice, the device operates in a true two-way TDD workflow. It intelligently switches between receiving and transmitting without needing extra front-end control signals, simplifying integration with a range of compatible devices and networks. The result is a flexible, plug-and-play solution that supports a variety of modulation schemes beyond LoRa, including FSK, ASK, MSK, and GFSK, making it a versatile choice for developers and integrators.

Key benefits you can expect

• Two-way amplification—receive sensitivity and transmit power are enhanced in tandem, improving link margin on both ends of the connection.
• High isolation—strong separation between receive and transmit paths reduces self-interference and helps resist external disturbances.
• Flexible modulation support—compatible with LoRa and multiple other modulation methods for diverse device integration.
• Smart, built-in switching—no extra switching hardware is required; the module adapts in real time to front-end activity.
• Adjustable gain—transmission gain can be tuned from 5 to 11 dB (±2 dB) while receiving gain sits at 11 dB (±2 dB).
• Broad voltage and output range—operates from 3.6 to 6.0 V with maximum TX power increasing with supply voltage (up to 34.5 dBm at 6.0V).

Specifications at a glance

• Frequency bands: Europe 863-870 MHz, US 902-928 MHz (no filter required).
• Receiving gain: 11 dB ± 2 dB
• Receiving noise figure: ≤ 2.0 dB
• Transmission gain: 5–11 dB (±2 dB) adjustable
• Input power range: 1–25 dBm
• Operating voltage: 3.6–6.0 V
• Maximum transmit power: 31.5 dBm at 3.7 V; 34.5 dBm at 6.0 V
• Recognition threshold for switching: -2 dBm

Usage scenarios and practical notes

Ideal for LoRa gateways, remote sensor networks, and industrial deployments where range and reliability matter. The unit can also support RC drones requiring extended telemetry and control ranges, or any setup needing robust long-distance LoRa communication.

• Status indicators: green (receiving) and blue (transmitting); in TDD, the lights flash alternately.
• Power considerations: RX typically draws ~10 mA; TX can peak at up to 1.5 A depending on supply voltage.
• Warm tips: reserve at least 3 dB transmit margin for reliable switching; minimum front-end power should not fall below 1 dBm.
• Filter note: the module does not include an internal filter; add your own as needed for your design.

Installation and performance tips

For best results, pair the booster with a stable power supply and appropriate heat dissipation. Proper mounting and cable management help maintain stable operation during extended use and high-load scenarios.