Saturday, August 2, 2008

Compact housing defines UHF FM transmitter module

Radiometrix's TX2S is a miniature PCB-mounted UHF radio transmitter for the 433.92MHz (UK) or 434.42MHz (European) radio bands.

Contained within a compact package, measuring 20mm x 10mm x 2mm, the TX2S allows design engineers to create a simple data link (either with a node-to-node, or multi-node architecture), which is capable of supporting rates of up to 40Kbit/s at distances of as much as 75m in-building and 300m across open ground.

The crystal-based PLL controlled FM transmitter operates off an input voltage of between 2.2 and 4V (allowing it to be used in portable, battery-powered system designs) and delivers nominally +0dBm at 7mA. The transmitter module is approved to the EN 300 220-3 and EN 301 489 standards. Internal filtering helps to ensure EMC levels are kept low by minimizing spurious radiation.

Key applications include car/building security systems, EPOS monitoring, inventory tracking, remote industrial process control, and computer networking. Price is about $15 each in quantities between 1 and 99.

- Ismini Scouras

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