long wave
Sign in to savethumb|Tuning dial on 1946 Dynatron Radio|Dynatron Merlin T.69 console radio receiver, showing LW wavelengths between 800 and 2000 metres (375–150 kHz)
Article
16 sectionsContents
- Propagation
- Non-broadcast use
- Non-directional beacons
- Time signals
- Submarine communication
- Amateur radio
- LowFER
- Historic
- Broadcasting <span class="anchor" id="longwave_broadcasting_anchor"></span>
- Carrier frequencies
- Long-distance reception
- List of long-wave broadcasting transmitters
- See also
- Notes
- References
- External links
thumb|Tuning dial on 1946 Dynatron Radio|Dynatron Merlin T.69 console radio receiver, showing LW wavelengths between 800 and 2000 metres (375–150 kHz)
In radio, longwave (also spelled long wave or long-wave and commonly abbreviated LW) is the part of the radio spectrum with wavelengths longer than what was originally called the medium-wave (MW) broadcasting band. The term is historic, dating from the early 20th century, when the radio spectrum was considered to consist of LW, MW, and short-wave (SW) radio bands. Most modern radio systems and devices use wavelengths which would then have been considered 'ultra-short' (i.e. VHF, UHF, and microwave).