Airports (McHenry County) Scanner Frequencies and Radio Frequency Reference

Airports (McHenry County)

Last Updated: January 31, 2025, 02:56 am UTC

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Frequency	License	Type	Tone	Alpha Tag	Description	Mode	Tag
122.900		BM	CSQ	0C0 CTAF/UNICOM	CTAF/UNICOM	AM	Aircraft

120.55 for Chicago Approach/Departure

Frequency	License	Type	Tone	Alpha Tag	Description	Mode	Tag
122.800		BM	CSQ	10C CTAF	CTAF/UNICOM	AM	Aircraft

Owned by the village, hosts an air show every June.
120.55 for Chicago Approach/Departure

Frequency	Type	Tone	Alpha Tag	Description	Mode	Tag
120.250	BM	CSQ	3CK RCO	RCO	AM	Aircraft
122.750	BM	CSQ	3CK Lights	Light Control	AM	Aircraft
129.150	BM	CSQ	3CK Platform	Air Show Platform	AM	Aircraft
464.750	BM		3CK Ops	Operations [No License]	FMN	Public Works