Radiometrix Ltd

LMT2/LMR2 Data Sheet

page 1

Features

Conforms to EN 300 220-3 and EN 301 489-3

High performance double superhet. PLL synthesizer with TCXO

quasi-dc (peak sampling) data recovery circuit (for enhanced performance on unbalanced

datastreams)

SAW front-end filter

Data rates up to 5 kbps for standard module

Usable range over 1km

Fully screened. Low profile

Feature-rich interface (RSSI, analogue and digital baseband)

Re-programmable via RS232 interface

Low power requirements

Applications

Handheld terminals

EPOS equipment, barcode scanners

Data loggers

Industrial telemetry and telecommand

In-building environmental monitoring and control

High-end security and fire alarms

DGPS systems

Vehicle data up/download

Heavy vehicle/machinery controls

Technical Summary

Operating frequency: 433.875-434.650MHz (EU band)

458.525 - 459.1MHz (UK band)

Other custom UHF bands

32 channels

Transmit power: +10dBm (10mW) / +20dBm (100mW)

Supply range: 3.1 – 15V (TX @ 10mW and RX), 4.1 – 15V (TX @ 100mW)

Current consumption: 34mA @ 10mW, 90mA @ 100mW (transmit) and 20mA (receive)

Data bit rate: 5kbps max. (standard module)

Receiver sensitivity: -118dBm (for 12 dB SINAD)

Serial configuration by inverted RS232 at 3V CMOS level

The

LMT2

transmitter

and

LMR2

receiver

modules offer a multi channel, low power, and

reliable data link. This makes the LMT2/LMR2

pair

ideally

suited

to

those

low

power

applications where existing wideband modules

have insufficient range, or where low cost multi-

channel

operation

is

needed

without

compromising on RF specification or regulatory

requirement.

Figure 1: LMT2 transmitter and LMR2 receiver

UHF Narrow Band FM Low Cost multi channel

Hartcran House, 231 Kenton Lane, Harrow, Middlesex, HA3 8RP, England

Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233, www.radiometrix.com

Issue 1, 21 January 2013

LMT2 / LMR2