San Francisco Giants Radio Network
Flagships
Table:
Callsign
Frequency
Location

KNBR
680 AM
San Francisco (Class A "clear channel" station)

KXZM
93.7 FM
San Jose (Spanish-language)[3]

Having looked at the table information on 'San Francisco Giants Radio Network' (see 'Flagships'), compose one sentence describing only the highlighted cells and provide it inside the JSON object {"answer": "YOUR ANSWER"}.