Decimeter wave
As decimeter waves , also dm wave range , UHF frequency range , UHF frequency band or UHF band ( English Ultra High Frequency - UHF ) , electromagnetic waves with a wavelength of one to ten decimeters (10 cm to 1 meter) are called, which is a Frequency band from approx. 3000 MHz (3 GHz) to 300 MHz. The decimeter wave range is thus between the (longer) ultra-short waves and the centimeter waves .
According to the "Frequency Range Allocation Plan " of the International Telecommunication Union ( VO Funk ) and the "Frequency Usage Plan Ordinance of the Federal Republic of Germany", there are extensive public, industrial, commercial, private and non-profit usage requirements for this frequency band . In addition, the frequency range is used by the military and BOS services.
In order to be able to cover the need for individual frequency assignments, this frequency band is divided into more than 80 frequency ranges, the use of which is explicitly assigned to radio services . These include - without claiming to be exhaustive - for example:
- Amateur radio service
- Fixed radio service : microwave applications
- Air navigation service : Glide path transmitter ( ILS ) of air traffic control
- Land Mobile Service : PMR , trunked radio , radio data transmission , remote control equipment, radio telephone networks, radio applications of the railway, paging, ISM applications , wireless motion sensor, wireless telecommunication systems, paging systems , wireless
- Mobile aeronautical service : military aeronautical radio
- Mobile maritime radio service via satellites : Inmarsat , worldwide maritime emergency and safety system (GMDSS), satellite buoys to mark the emergency position
- Radio astronomy service :
- Broadcasting service : DVB-T , TV broadcasting bands IV and V , reportage radio , wireless microphones, wireless TV cameras,
- Navigational radio service : Air traffic control systems TACAN , DME , SSR , ACAS
-
Location radio service : radar systems of air traffic control
- Non-navigational location radio service : military radar sensors
- Satellite navigation service : GPS , Galileo , GLONASS satellite navigation systems
- Space research radio service , space telecontrol service , earth exploration radio service via satellites : orbit surveying as well as telemetry and remote control of satellites
- Weather aid radio service : weather probes
- Weather radio service via satellites : Weather satellites
See also
Individual evidence
- ↑ Radio Regulations, Edition of 2012
- ↑ Ordinance on the procedure for drawing up the frequency usage plan (Frequency Usage Plan Preparation Ordinance - FreqNPAV)