Medium frequency
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Medium frequency is the ITU designation for radio frequencies in the range of 300 kilohertz to 3 megahertz. Part of this band is the medium wave AM broadcast band. The MF band is also known as the hec
Mast radiator of a commercial MF AM broadcasting station, Chapel Hill, North Carolina, USA
Cage T antenna used by amateur radio transmitter on 1.5 MHz.
Non-directional beacon
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A non-directional beacon or non-directional radio beacon is a radio beacon which does not include inherent directional information. Radio beacons are radio transmitters at a known location, used as an
Radio tower of NKR Leimen-Ochsenbach, Germany
NDB transmitter at 49°12′21″N 002°13′12″W / 49.20583°N 2.22000°W / 49.20583; -2.22000 (Jersey West) Callsign JW – 'Jersey West'. 329.0 kHz.
One of the wooden poles of NDB HDL at Plankstadt, Germany
Ferrite antenna for non-directional beacon (NDB), frequency range 255–526.5 kHz