Editing LPD433 (section)

{{Short description|European radio band for license-free devices}}
'''LPD433''' (low power device 433&nbsp;MHz) is a [[ultra high frequency|UHF]] band in which license free communication devices are allowed to operate in some regions. The frequencies correspond with the [[International Telecommunication Union region|ITU region 1]] [[ISM band]] of 433.050&nbsp;[[megahertz|MHz]] to 434.790&nbsp;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,<ref name=rec_70-03>[[European Conference of Postal and Telecommunications Administrations|CEPT/ERC]] [http://www.erodocdb.dk/docs/doc98/official/pdf/rec7003e.pdf  REC 70-03] {{Webarchive|url=https://web.archive.org/web/20130805013647/http://www.erodocdb.dk/Docs/doc98/official/pdf/REC7003E.PDF |archive-url=https://ghostarchive.org/archive/20221009/http://www.erodocdb.dk/Docs/doc98/official/pdf/REC7003E.PDF |archive-date=2022-10-09 |url-status=live |date=2013-08-05 }} (22 August 2011)</ref> with 25 [[kilohertz|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 (radio)|antenna]] with a maximum legal power output of 10 [[milliwatt|mW]].

Voice communication in the LPD band was introduced to reduce the burden on the eight (now sixteen)<ref>{{cite web|url=http://www.erodocdb.dk/Docs/doc98/official/pdf/ECCDEC1505.PDF|title=ECC Decision (15) 05|publisher=CEPT Electronic Communications Committee|access-date=2017-12-06|archive-url=https://web.archive.org/web/20170819055247/http://www.erodocdb.dk/Docs/doc98/official/pdf/ECCDEC1505.PDF|archive-date=2017-08-19|url-status=dead}}</ref> [[PMR446]] channels over shorter ranges (less than 1&nbsp;km).<ref>{{Cite web|title=The Consumer Electronics Hall of Fame: Motorola T250 Talkabout Walkie-Talkies|url=https://spectrum.ieee.org/the-consumer-electronics-hall-of-fame-motorola-t250-talkabout-walkietalkies|website=IEEE Spectrum: Technology, Engineering, and Science News|language=en|access-date=2020-05-09}}</ref>

LPD is also used in vehicle key-less entry device, garage or gate openers and some outdoor home weather station products.