Radiometrix Ltd

HMT2 Data Sheet

page 1

Features

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

PLL Synthesized transmitter with TCXO

Data rates up to 5 kbps for standard module

Usable range over 5km

Fully screened

User configurable via RS232 interface

Low power requirements

Applications

Handheld terminals

On-site paging system (e.g. Nurse call pagers)

Heavy vehicle/machine remote controls

Data loggers

Industrial telemetry and telecommand

High-end security and fire alarms

Vehicle data up/download

Technical Summary

Operating frequency: 458.525 - 459.1MHz (standard)

or 458.8 - 459.3MHz and 461.3MHz (for paging)

16 parallel / 32 serial select channels

Transmit power: +27dBm (500mW) nominal

Supply range: +5V regulated (or +6 - +9V for -R version)

Current consumption: 350mA transmit, <5µA standby

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

Size: 66 x 23 x 9 mm

The HMT2 transmitter module offers a

500mW RF output in the UK 458MHz. This

unit is ideally suited to applications where

existing

lower

powered

transmitters

provide

insufficient

range.

The HMT2

transmitter is a multi-channel, narrowband

design,

suitable

for

licensed

and

unlicensed UHF allocations. Together with

a matching LMR2 receiver a one-way radio

data link can be achieved over a distance

of well over 5km (with a suitable antenna).

Figure 1: HMT2-458-5

NBFM Multi-channel 500mW UHF Transmitter

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 A, 06

HMT2-458-5

PRELIMINARY