Aviation radio frequencies

What are the different uses for company frequencies by airlines?

There are several different uses for company frequencies by airlines: Dispatch - Many carriers have their own dispatch frequencies but some use the ARINC En Route Service instead as needed

Sometimes the Dispatch and Operations frequencies are the same at a given airport

×Aviation radio frequencies are the frequencies used for communication and navigation in aviation.Some of the aviation radio frequency bands are:

Non-directional Beacons (NDB): 190 - 435 & 510 - 535 kHz
HF Radio Communications: 2100 - 28,000 kHz
NAV-AID (Marker Beacons): 75 MHz
VOR and ILS Localizer: 108 - 112 MHz
ILS Glide Slope: 328.6 - 335.4 MHz
VHF Radio Communications: 118 - 137 MHz
UHF Radio Communications: 225 - 400 MHz
Radar: 960 - 1215 MHz
GPS: 1227.6 & 1575.42 MHz

Technical Development of Broadcasting

The early history of radio is the history of technology that produces and uses radio instruments that use radio waves.
Within the timeline of radio, many people contributed theory and inventions in what became radio.
Radio development began as wireless telegraphy.
Later radio history increasingly involves matters of broadcasting.

Technical Development of Broadcasting