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 GJX2 Issue 1, 11 June 2012 500mW Multi-channel 4800 baud Radio Modem The GJX2 is a high power 4800 baud radio modem with on board microcontroller for user proprietary control firmware. The wireless RF link is carried over a fast-switching multichannel 458MHz narrowband transceiver, capable of 500mW RF power output. Figure 1: GJX2-458-4 Features Conforms to EN 300 220-3 and EN 301 489-3 High performance double superhet Low noise PLL Synthesizer with TCXO Data rate is 4800 baud over the radio link Usable range over 5km Fully screened User configurable via RS232 interface Low power requirements Applications Heavy vehicle/machine remote controls EPOS equipment, barcode scanners Data loggers Industrial/commercial telemetry and telecommand In-building environmental monitoring and control High-end security and fire alarms Vehicle data up/download Technical Summary Operating frequency: 458.525-459.1MHz Custom variants from 420MHz to 480MHz on any 5MHz band Up to 32 channels max. Transmit power: +27dBm (500mW) nominal Transmit switching time: 5ms (max) Supply range: 6V - 15V Current consumption: 400mA transmit, 50mA receive Data bit rate: 5kbps max. (standard module) Receive sensitivity is -115dBm for 0.1% data errors (12dB SINAD is -118dBm) Dimension: 119mm x 64mm x TBAmm Radiometrix Ltd GJX2 Data Sheet page 1 Condensed specifications Frequency 458.525 - 459.1MHz (any 5MHz band from 420-480MHz) VHF version TBA ± 1.5kHz 25kHz or 12.5kHz 32 channels controlled via RS232 interface Frequency stability Channel spacing Number of channels Transmit Output power TX on switching time Modulation type Deviation Adjacent channel TX power +27dBm (500mW) ±1dB <10 ms FSK (F1D, F3D) ± 3kHz -37dBm Receive Sensitivity image / spurious blocking adjacent channel Spurious radiations -115dBm for 12 dB SINAD -60dB -85dB <-65dB (Tested per. ETSI EN 300 086) Compliant with ETSI EN 300 220-3 and EN 301 489-3 Supply Voltage Current 6V - 15V DC (+5V regulated version available) 400mA nominal transmit 50mA receive user 3 way terminal block or 4 pin header for 3-wire UART (Inverted RS232 at 5V TTL level) interface Optional RS485 2 way 3.5mm terminal block BNC connector Interface Power RF Dimension Operating temperature Intended approval Radiometrix Ltd 119mm x 64mm x TBA mm -20 to +55 οC -30 to +70 οC (Storage -30 to +70 οC) ETSI Radio standard EN 300 220-3 and EMC standard EN 301 489-3 FCC part 90 compliance GJX2 Data Sheet page 2 Radiometrix Ltd Hartcran House 231 Kenton Lane Harrow, Middlesex HA3 8RP ENGLAND Tel: +44 (0) 20 8909 9595 Fax: +44 (0) 20 8909 2233 [email protected] www.radiometrix.com Copyright notice This product data sheet is the original work and copyrighted property of Radiometrix Ltd. Reproduction in whole or in part must give clear acknowledgement to the copyright owner. Limitation of liability The information furnished by Radiometrix Ltd is believed to be accurate and reliable. Radiometrix Ltd reserves the right to make changes or improvements in the design, specification or manufacture of its subassembly products without notice. Radiometrix Ltd does not assume any liability arising from the application or use of any product or circuit described herein, nor for any infringements of patents or other rights of third parties which may result from the use of its products. This data sheet neither states nor implies warranty of any kind, including fitness for any particular application. These radio devices may be subject to radio interference and may not function as intended if interference is present. We do NOT recommend their use for life critical applications. The Intrastat commodity code for all our modules is: 8542 6000 R&TTE Directive After 7 April 2001 the manufacturer can only place finished product on the market under the provisions of the R&TTE Directive. Equipment within the scope of the R&TTE Directive may demonstrate compliance to the essential requirements specified in Article 3 of the Directive, as appropriate to the particular equipment. Further details are available on The Office of Communications (Ofcom) web site: http://www.ofcom.org.uk/ Information Requests Ofcom Riverside House 2a Southwark Bridge Road London SE1 9HA Tel: +44 (0)300 123 3333 or 020 7981 3040 Fax: +44 (0)20 7981 3333 [email protected] European Communications Office (ECO) Peblingehus Nansensgade 19 DK 1366 Copenhagen Tel. +45 33896300 Fax +45 33896330 [email protected] www.ero.dk