- Published in issue 5/1998 on page 34
418/433 MHz short-range communication:
licence-exempt data transmission and remote control systems
In the UK, two small sections of the 70-cm band, around 418 MHz and 433 MHz, have been available for some time for licenceexempt wireless communication using type-approved lowpower devices (LPDs), also called short-range devices (SRDs). In this article we look at the use of these frequency bands, and some general design considerations for SRD modules.