Jamming is usually distinguished from interference that can occur due to device malfunctions or other accidental circumstances. Devices that simply cause interference are regulated under different regulations. Unintentional ‘jamming’ occurs when an operator transmits on a busy frequency without first checking whether it is in use, or without being able to hear stations using the frequency. Another form of unintentional jamming occurs when equipment accidentally radiates a signal, such as a cable television plant that accidentally emits on an aircraft emergency frequency. […]
Obvious jamming is easy to detect because it can be heard on the receiving equipment. It usually is some type of noise such as stepped tones (bagpipes), random-keyed code, pulses, music (often distorted), erratically warbling tones, highly distorted speech, random noise (hiss) and recorded sounds. Various combinations of these methods may be used often accompanied by regular morse identification signal to enable individual transmitters to be identified in order to assess their effectiveness.
(Wikipedia - Radio Jamming https://en.wikipedia.org/wiki/Radio_jamming)

Featuring mutations of field recordings* from Kunming, Lijiang and the medium wave radio in the valleys of Yunnan Province, China, April 2016. In collaboration with The So Far Channel (http://sofarchannel.com)


*No media was harmed in the creation of this radio show