KNBR-FM

KNBR-FM

San Francisco, California
Broadcast area	San Francisco-Oakland-San Jose
Frequency	104.5 MHz
Branding	KNBR 104.5 and 680
Programming
Format	Sports
Network	Infinity Sports Network
Affiliations	San Francisco 49ers Radio Network San Francisco Giants Radio Network Sports USA Radio Network Westwood One Sports
Ownership
Owner	Cumulus Media Inc. (Radio License Holding SRC LLC)
Sister stations	KNBR, KGO, KSAN, KSFO, KTCT
History
First air date	February 4, 1960 (64 years ago) (1960-02-04)
Former call signs	KBAY-FM (1960–1963) KFOG (1963–2019)
Call sign meaning	carried over from KNBR, once owned by NBC
Technical information[1]
Licensing authority	FCC
Facility ID	54770
Class	B
ERP	7,100 watts
HAAT	459 meters (1,506 ft)
Transmitter coordinates	37°45′18″N 122°27′11″W / 37.755°N 122.453°W / 37.755; -122.453
Repeater(s)	See § Booster
Links
Public license information	Public file LMS
Webcast	Listen live Listen live (via iHeartRadio)
Website	www.knbr.com

KNBR-FM (104.5 MHz) is a commercial radio station licensed to San Francisco, California, serving the greater San Francisco Bay Area. Owned by Cumulus Media, KNBR-FM features a sports radio format in a simulcast with co-owned KNBR. Both stations are the San Francisco affiliates for Infinity Sports Network, the flagship stations for the San Francisco Giants Radio Network and co-flagship stations for the San Francisco 49ers Radio Network (along with KSAN and KGO). KNBR-AM-FM are the radio home of Greg Papa and Tom Tolbert.

KNBR maintains studios on Battery Street in San Francisco, while the transmitter is located on Mount Sutro. In addition to a standard analog transmission, KNBR simulcasts over low-power analog Pleasanton booster KNBR-FM3 (104.5 FM), and is available online.