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Opb logo.png
Portland, Oregon
Branding OPB
Channels Digital: 10 (VHF)
Affiliations PBS
Owner Oregon Public Broadcasting[1]
First air date February 6, 1961
Call letters’ meaning Oregon
Former callsigns KOAP-TV (1961-1989)
Former channel number(s) Analog:
10 (VHF, 1961-2009)
27 (UHF, 2001-2009)
Former affiliations NET (1961-1970)
Transmitter Power 32.4 kW
Height 524 m
Facility ID 50589
Transmitter Coordinates 45°31′21″N 122°44′45″W / 45.5225°N 122.74583°W / 45.5225; -122.74583

KOPB-TV is a public television station serving the Portland, Oregon television market. It is owned and operated by Oregon Public Broadcasting. It broadcasts its digital signal on VHF channel 10.

Channel 10 signed on the air as KOAP on February 6, 1961. Called letters mirroring originating station KOAC-TV Channel 7 Corvallis. KOAP call letter meaning: Oregon Air Portland. The station was first housed at campus of Portland State University. With the transmitter being located on Council Crest. KOAP was a member of NET, National Educational Television carrying its programs. On April 30, 1962 KOAP's FM sister service signed on the air. By 1966 most local programs originated at KOAP-TV. In October 1970 PBS, Public Broadcasting Service replaced NET. KOAP-TV and KOAC-TV were known on the air as OEB, Oregon Educational Broadcasting. In early 1972 OEB became OEPBS, Oregon Educational & Public Broadcasting Service. In October 1981 OEPBS became OPB, Oregon Public Broadcasting. On February 15, 1989 KOAP FM-TV became KOPB FM-TV.

OPB was a pioneer in HDTV. As early as March 5, 1997 OPB's experimental HDTV station transmitted a random-bit data stream. On September 15, 1997 OPB Portland was assigned the experimental call letters KAXC for channel 35. Then on October 11, 1997 at 4:37 P.M. KAXC became the first TV station in Oregon and one of the first on the west coast to transmit an HDTV picture. After experimentation ended, channel 35 was vacated. On December 7, 2001 KOPB-DT began operation on channel 27.

Analog-to-digital conversion

At the analog television shutdown on June 12, 2009 [2], KOPB-TV returned to channel 10. [3]

External links




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