Most usually, the received in the HF amateur radio bands using FM modulation are received in the 10 meter band.

Frequency modulation is an angular modulation technique that allows information to be transmitted via a carrier wave by varying its instantaneous frequency.

The ITU classification of emissions code of FM is F3E, where
F = Frequency modulation
3 = A single channel containing analogue information
E = Telephony (including sound broadcasting)

An exemple of non-amateur communications on amateur radio bands using FM are the short transmissions sent on the 10 meter band, usually by female operators, supposed to be Russian taxis and taxi dispatch. 

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