Editing Medium wave (section)

===Receiving antennas===
[[Image:Ferritantenne 2.jpg|thumb|Typical ferrite rod antenna used in AM radio receivers]]
Because at these frequencies atmospheric noise is far above the receiver [[signal-to-noise ratio]], inefficient antennas much smaller than a wavelength can be used for receiving.  For reception at frequencies below 1.6&nbsp;MHz, which includes long and medium waves, [[loop antenna]]s are popular because of their ability to reject locally generated noise.  By far the most common antenna for broadcast reception is the [[Ferrite rod|ferrite-rod antenna]], also known as a loopstick antenna.  The high permeability ferrite core allows it to be compact enough to be enclosed inside the radio's case and still have adequate sensitivity.
For weak signal reception or to discriminate between different signals sharing a common frequency directional antennas are used. For best signal-to-noise ratio these are best located outdoors away from sources of electrical interference. Examples of such medium wave antennas<ref>{{Cite web|title=4: MW Aerials – Antennas – Medium Wave Circle|url=https://mwcircle.org/4-mw-aerials-antennas/|access-date=2021-11-28|language=en-GB}}</ref> include broadband untuned loops, elongated terminated loops, wave antennas (e.g. the [[Beverage antenna]]) and the ferrite sleeve loop antenna.