They are in the database for Chester County:
Airports
Brandywine Municipal
Frequency License Type Tone Alpha Tag Description Mode Tag
123.00000 unicom unicom FM Aircraft
123.02500 helicopter u helicopter unicom channel 1 FM Aircraft
123.07500 helicopter u helicopter unicom channel 2 FM Aircraft
132.67500 app/dep app/dep FM Aircraft
Chester County G. O. Carlson Airport
AirNav: KMQS - Chester County G O Carlson Airport
Frequency License Type Tone Alpha Tag Description Mode Tag
122.70000 unicom unicom FM Aircraft
125.60000 clearnce del clearnce delivery FM Aircraft
126.25000 ATIS ATIS FM Aircraft
128.95000 keystone hel keystone helicopters FM Aircraft
132.67500 app/dep app/dep FM Aircraft
Keystone Heliport
Frequency License Type Tone Alpha Tag Description Mode Tag
123.05000 KeystonUnicm Keystone Heliport Unicom AM Aircraft