LPD433
European radio band for license-free devices / From Wikipedia, the free encyclopedia
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LPD433 (low power device 433 MHz) is a UHF band in which license free communication devices are allowed to operate in some regions. The frequencies correspond with the ITU region 1 ISM band of 433.050 MHz to 434.790 MHz. The frequencies used are within the 70-centimeter band, which is currently otherwise reserved for government and amateur radio operations in the United States and most nations worldwide.
LPD hand-held radios are authorized for licence-free voice communications use in most of Europe using analog frequency modulation (FM) as part of short range device regulations,[1] with 25 kHz channel spacing, for a total of 69 channels. In some countries, LPD devices may only be used with an integral and non-removable antenna with a maximum legal power output of 10 mW.
Voice communication in the LPD band was introduced to reduce the burden on the eight (now sixteen)[2] PMR446 channels over shorter ranges (less than 1 km).[3]
LPD is also used in vehicle key-less entry device, garage or gate openers and some outdoor home weather station products.