KDR 444 (Norwegian "kortdistanseradio", Swedish "kortdistansradio", "short distance radio") or KDR, is a licence-free
personal radio service
A personal radio service is any system that allows individual to operate radio transmitters and receivers for personal purposes with minimal or no special license or individual authorization. Personal radio services exist around the world and typic ...
in the
UHF
Ultra high frequency (UHF) is the ITU designation for radio frequencies in the range between 300 megahertz (MHz) and 3 gigahertz (GHz), also known as the decimetre band as the wavelengths range from one meter to one tenth of a meter (on ...
range used in Sweden and Norway. It is usually referred to as SRBR 444 (Short Range Business Radio) in Sweden. Transmitters are limited to 2 W
ERP (previously 1 W) in Sweden and 0.5 W in Norway
[http://www.lovdata.no/cgi-wift/ldles?ltdoc=/for/ff-20120119-0077.html#40 Norwegian regulation on general permission for use of frequencies $40 (2) ]n Norwegian
N, or n, is the fourteenth Letter (alphabet), letter in the Latin alphabet, used in the English alphabet, modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is English alphabet# ...
/ref>. FM with a bandwidth of 25 kilohertz is used. Norway require a radio with fixed antenna to be used with these frequencies.
Channels
Norway has 6 channels, while Sweden has 8 channels. Note that channel 6 is different in Norway and Sweden.
Channels use FM. Frequencies 444.875 and 444.925 are newer frequencies available in Sweden but may not be available in some other regions (such as Norway); older equipment may also lack these new frequencies. Consequently, 444.975 is likely to be called channel number six on such devices.
European use
KDR 444 is specific to parts of Scandinavia and is not cleared for use across the European Union.
See also
*PMR446
PMR446 (Private Mobile Radio, 446 MHz) is a licence exempt service in the UHF radio frequency band and is available for business and personal use in most countries throughout the European Union.
PMR446 is typically used for small-site, sa ...
*UHF CB
UHF CB is a class-licensed citizen's band radio service authorised by the governments of Australia, New Zealand, Vanuatu, and Malaysia in the UHF 477 MHz band. UHF CB provides 77 channels, including 32 channels (16 output, 16 input) alloc ...
*Family Radio Service
The Family Radio Service (FRS) is an improved walkie-talkie radio system authorized in the United States since 1996. This personal radio service uses channelized frequencies around 462 and 467 MHz in the ultra high frequency (UHF) band. I ...
References
Bandplans
Radio hobbies
{{Radio-comm-stub
no:Privatradio