Most of the intrusions on amateur radio bands in this mode of transmission are carried out by broadcasting stations.

These intrusions are produced by the direct transmission on the amateur bands frequencies, by splatter, by harmonics of the main transmission frequency or by intermodulation products

The ITU classification of emissions code for AM is A3E, where,
A = Double-sideband
3 = A single channel containing analogue information
E= Telephony (including sound broadcasting)

Here, some examples

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