RX6000

458MHZ RF TRANSMITTER & RECEIVER FEATURES • Miniature Crystal Module • 500mw RF Output Power • Very High Frequency Stability • Up To 20km Range (Direct Line Of Sight) • 1-3km Range (Within Buildings) • 15 Single Channel Versions Available • W ide Tx Voltage Range 6.5 - 9v Dc • Rx - Single Supply Voltage 5vdc • Low Power Consumption • Fast Response Time • Standard TTL/CMOS Interface • Mpt1329 Licence Exempt TX/RX6000 DESCRIPTION The R.F. Solutions 458MHz FM Transmitter and receivers are compact ‘credit card’ sized crystal controlled modules, capable of transmitting data up to 20 kilometres in direct line of sight, up to 1-3km within buildings. These modules are crystal controlled for frequency accuracy and are supplied tuned to one of 15 available channel frequencies. The units are suitable for general purpose telemetry applications where small size and high data rates are needed. The module can transmit digital or analogue (GMSK, or FSK) data at up to 9600baud rate. Supplied as a completed module, no modification or pre tuning is necessary. Connections are by gold plated pins on the module base, enabling the module to be socketed for interchangeability (e.g. for other frequency channels). The radios have been designed to meet ETSI300-220, EN50081-1, EN50082-1 EMC directive and are DTI approved under MPT1329 for licence free use. TYPICAL OPERATION Host Data Source TX6000 RX6000 Host Data Source DS006-2 Oct 02 2003 REG No 277 4001, ENGLAND. Page 1 458MHZ RF TRANSMITTER & RECEIVER TX/RX6000 Frequency of Operation The TX/RX6000 modules operate on the 458.500MHz to 458.950MHz telemetry band. There are 15 channels within this band. The TX/RX6000 modules are supplied at one of these specific channel frequency bands. When ordering the modules, the exact frequency must be stated. Ch No (Hex) Frequency (MHz) 02 458.525 04 458.550 06 458.575 08 458.600 0A 458.625 0C 458.650 0E 458.675 10 458.700 12 458.725 14 458.750 16 458.775 18 458.800 1C 458.850 1E 458.875 20 458.900 22 458.925 Radio Propagation W ith any radio system, there are a number of factors affecting the system performance. These are • Transmitter power output • Height of transmitter and receiver antenna • Length of feeder cables to the antenna • Type and efficiency of antenna • Surrounding topography • The weather Antennas The types of antenna we recommend for this Modem are; Helical : The smallest, most compact antenna, has a gain of