Kort Distanse Radio
Encyclopedia
Short distance radio or KDR also KDR 444, is a radio service in the UHF range that is open without licensing for personal usage in Sweden and Norway. Transmitters are limited to one-half watt and use FM
with a bandwidth of 16 kilohertz.
channels fairly arbitrarily spaced.
The assigned frequencies are used for other services in other countries; for example, in Germany some of these channels are allocated for public safety (police, fire, ambulance) services (See :de:BOS-Funk, in German). Countries in ITU region 2 may allocate these frequencies to the amateur radio
service.
Frequency modulation
In telecommunications and signal processing, frequency modulation conveys information over a carrier wave by varying its instantaneous frequency. This contrasts with amplitude modulation, in which the amplitude of the carrier is varied while its frequency remains constant...
with a bandwidth of 16 kilohertz.
Channels
There are six FMFM broadcasting
FM broadcasting is a broadcasting technology pioneered by Edwin Howard Armstrong which uses frequency modulation to provide high-fidelity sound over broadcast radio. The term "FM band" describes the "frequency band in which FM is used for broadcasting"...
channels fairly arbitrarily spaced.
| Channel | Frequency (MHz) |
|---|---|
| 1 | 444.600 |
| 2 | 444.650 |
| 3 | 444.800 |
| 4 | 444.825 |
| 5 | 444.850 |
| 6 | 444.975 |
The assigned frequencies are used for other services in other countries; for example, in Germany some of these channels are allocated for public safety (police, fire, ambulance) services (See :de:BOS-Funk, in German). Countries in ITU region 2 may allocate these frequencies to the amateur radio
Amateur radio
Amateur radio is the use of designated radio frequency spectrum for purposes of private recreation, non-commercial exchange of messages, wireless experimentation, self-training, and emergency communication...
service.