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Product Features
LMR400 DSP based integrated UHF Modem is the single board OEM wireless transceiver intended for SCADA,
outdoor telemetry applications and transmission / receiving of differential corrections and additional in-
formation by terrestrial radio channels between two GNSS receivers. LMR400 is a half duplex, UHF Radio
Transceiver. It takes incoming data, modulates it with GMSK, FSK, PSK or most spectrum efficient QAM modu-
lation and transmits it at RF power output levels from 15 dBm up to 30 dBm operating in UHF frequency band
(406 to 470 MHz).
LMR400 OEM board
The UHF transceiver is also capable of receiving RF signals through a 50 Ohm impedance external antenna
port.
LMR400 delivers a reliable radio link at up to 38.4 kbps over the air for the 25 kHz channel spacing, 30 kpbs for
20 kHz, 19.2 kbps for 12.5 kHz, and 9.6 kbps for 6.25 kHz. The module requires a regulated DC voltage power
supply 4.2 V ± 5%.
The delivered product is a wireless system, which includes:
• LMR400 – UHF Radio Transceiver;
• AWLaunch – Windows based Unit Configuration and Maintenance Software Application running on a IBM
PC compatible computer and connecting to the device over RS-232 interface or USB-to-Serial adapter.
The setting can be done through the built-in Command Line interface (CLI), or through the configuration and
maintenance application software running either on PC – AWLaunch.
The diagnostic feature of the LMR400 system provides the information to monitor and maintain user’s com-
munications link. The output transmit power, receive signal strength (RSSI), antenna/feedline condition, and
data decode performance are transmitted online without application interruption.
The product is designed for maximum performance and reliability even in the harshest environments. Plug
and play at its best, robust, withstanding the most adverse of conditions.
Description
INTRODUCTION
