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City Corvallis, Oregon
Frequency 550 kHz
Format Public radio; News/Talk
Power 5,000 watts
Class B
Facility ID 50587
Transmitter coordinates 44°38′12″N 123°11′33″W / 44.63667°N 123.19250°W / 44.63667; -123.19250Coordinates: 44°38′12″N 123°11′33″W / 44.63667°N 123.19250°W / 44.63667; -123.19250[1]
Callsign meaning Oregon Agricultural College
Affiliations National Public Radio
American Public Media
Public Radio International
Owner Oregon Public Broadcasting
(Oregon Public Broadcasting)
Webcast Stream
Website opb.org
KOAC Radio building, circa 1941
Arnold Ebert of KOAC interviewing a cow (1950).

KOAC (550 AM) is a radio station licensed to Corvallis, Oregon. The station is owned by Oregon Public Broadcasting, and airs OPBs news and talk programming, consisting of syndicated programming from NPR, APM and PRI, as well as locally produced offerings.

KOAC (AM) is the only directional AM radio station in the United States which uses a shunt-fed antenna.[2]


  1. ^ "Radio locator: Corvallis, Oregon". Theodric Technologies LLC. 2012. Retrieved March 10, 2012. 
  2. ^ http://www.fybush.com/sites/2007/site-070223.html

External links[edit]