Radiometrix Announces 433 MHz Multi-Channel
Multi-channel radio modem transmitter & receiver enable implementation of simple, 9600bps wireless links
Radio Modem Transmitter & Receiver
April 2010 -- The
receiver modules, from London-based wireless solutions developer Radiometrix, are half duplex multi-channel OEM
radio modems offered in the company’s popular SIL standard footprint. Operating in the European license-free 433
MHz ISM (Industrial Scientific and Medical) frequency band, with a choice of 5 user programmed channels, these
products can be employed to form transparent one-way radio data links supporting data rates of 9600 bps over a
line-of-sight range of 500 m (typical).
Unlike raw FM radio module alternatives, these modules take care
of preamble, synchronisation, bit balancing, error checking, and noise squelching, as well as all transmit timing,
valid data identification and datastream buffering activities. This allows a data link to set be set up with the
minimum of engineering effort. Each module can be assigned 1 of 8 unique addresses, so that a multiple radio link
network can be established, provided no two modules are attempting to transmit at the same time on same channel.
The transmitter has an output power of 10 dBm (10 mW), while the receiver has a sensitivity of -107 dBm. The
modules require a 5 V power supply, drawing just 28 mA for transmitting and 22mA for receiving. They have an
operating temperature range of -20 °C to +70 °C.
Both the transmitter and receiver comply with EN 300 220-2 and EN 301 489-3 standards. Key applications for these
modules include handheld/portable terminals, industrial/commercial telemetry systems, data loggers, and
in-building environmental monitoring systems. www.radiometrix.com/node/139
Founded in 1985, London-based Radiometrix has become a leading global developer of low power
VHF and UHF radio modules for licence-exempt and licensed frequency bands. It highly experienced engineering team
produce products for a wide variety of applications, with both customized and off-the-shelf solutions available
through its global sales and distribution network.
For more information go to
231 Kenton Lane
Harrow, Middlesex, HA3 8RP, UK.
Tel: +44 (0) 208-909-9595
Fax: +44 (0) 208-909-2233
For sales enquiries contact