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LMT1-151-5-12K5

Description
VHF Narrow Band FM Low Cost multi channel radio modules
File Size242KB,10 Pages
ManufacturerRadiometrix Ltd.
Websitehttp://www.radiometrix.com/
Download Datasheet View All

LMT1-151-5-12K5 Overview

VHF Narrow Band FM Low Cost multi channel radio modules

EW
N
Issue 1, 06 March 2008
Radiometrix
Hartcran House, 231 Kenton Lane, Harrow, HA3 8RP, England
Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233
LMT1/LMR1
VHF Narrow Band FM Low Cost multi channel radio modules
The LMT1 transmitter and LMR1
receiver modules offer a multi channel,
low power, and reliable VHF data link.
This makes the LMT1/LMR1 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: LMT1 transmitter and LMR1 receiver
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)
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: 173.200 - 173.325MHz (UK band)
150.825 - 152.450MHz (Australian Band)
Other VHF frequencies available
4 UK allocation channels (32 maximum)
Transmit power: +10dBm (10mW) nominal @ 3.1V (Adjustable 1 - 25mW)
+20dBm (100mW) nominal @ 4.1V (Adjustable 25 - 100mW)
Supply range: 3.1 – 15V (@10mW) transmitter and receiver
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
LMT1/LMR1 Data Sheet
page 1
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