KOPB-TV

Last updated

KOPB-TV
Oregon Public Broadcasting (logo).svg
City Portland, Oregon
Channels
BrandingOPB
Programming
Subchannels
NetworkOregon Public Broadcasting
Affiliations PBS, APT
Ownership
Owner Oregon Public Broadcasting [1]
History
First air date
February 6, 1961;62 years ago (1961-02-06)
Former call signs
KOAP-TV (1961–1989)
Former channel number(s)
  • Analog: 10 (VHF, 1961–2009)
  • Digital: 27 (UHF, 2001–2009)
NET (1961–1970)
Call sign meaning
Oregon Public Broadcasting
Technical information [2]
Licensing authority
 FCC
Facility ID 50589
ERP 46 kW
HAAT 524 m (1,719 ft)
Transmitter coordinates 45°31′20.5″N122°44′49.5″W / 45.522361°N 122.747083°W / 45.522361; -122.747083
Translator(s) see § Translators
Links
Public license information
Website www.opb.org

KOPB-TV (channel 10) is a PBS member television station in Portland, Oregon, United States, owned by Oregon Public Broadcasting. The station's transmitter is located in the city's Sylvan-Highlands section.

Contents

History

KOPB-TV originally signed on the air as KOAP-TV, on February 6, 1961. [3] The call sign letters stood for "Oregon Agricultural Portland", preceded by the "K" prefix the Federal Communications Commission uses when assigning call signs for stations west of the Mississippi River. [4] It was a sister station to KOAC-TV in Corvallis, Oregon, whose call letters –carried over from KOAC-AM, which received them in the mid-1920s during its early years broadcasting as an AM radio station –stood for "Oregon Agricultural College" (Oregon State University's original name). KOAP-TV was first housed at the campus of Portland State College (now Portland State University), with the transmitter being located on Council Crest. [4] KOAP-TV was a member of NET, or National Educational Television (NET), carrying its programs. On April 30, 1962, KOAP-TV's FM sister service (KOAP-FM) signed on the air. By 1966, most local programs originated at KOAP-TV.

Originally known on-air as OEB (Oregon Educational Broadcasting), the organization running the station changed its name in early 1972 to OEPBS (Oregon Educational & Public Broadcasting Service). The network was spun off from the state board of education in October 1981 and renamed Oregon Public Broadcasting. At the same time, the network moved to Portland, and KOAP-FM/TV became the flagship stations. On February 15, 1989, KOAP changed their call letters to KOPB, for both radio and television. [5]

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.

Technical information

Subchannels

The station's signal is multiplexed: [6]

Subchannels of KOPB-TV [7]
Channel Res. Aspect Short nameProgramming
10.1 1080i 16:9 OPBMain KOPB-TV programming / PBS [6]
10.2World OPB World (Formerly OPB Plus) [6] [8]
10.3 480i OPBKids OPB Kids
10.4OPB-FMOPB radio main programming (SAP audio channel 1)
KMHD Jazz Radio (SAP audio channel 2) [6]

Translators

City of licenseCallsignChannel ERP HAAT Facility ID Transmitter coordinatesOwner
Arlington K17GK-D 170.3 kW183 m (600 ft)50572 45°45′49.4″N120°14′44.1″W / 45.763722°N 120.245583°W / 45.763722; -120.245583 (K17GK-D) Oregon Public Broadcasting
Astoria K23GK-D 236.2 kW378 m (1,240 ft)129764 46°17′10.3″N123°53′49.5″W / 46.286194°N 123.897083°W / 46.286194; -123.897083 (K23GK-D)
Burns K36BA-D 360.62 kW264 m (866 ft)50572 43°34′22.5″N119°7′52.7″W / 43.572917°N 119.131306°W / 43.572917; -119.131306 (K36BA-D)
Christmas Valley K26KQ-D 260.5 kW515 m (1,690 ft)185204 43°33′24.5″N120°4′26.8″W / 43.556806°N 120.074111°W / 43.556806; -120.074111 (K26KQ-D)
Gold Beach K29JN-D 290.55 kW79 m (259 ft)50565 42°26′24″N124°25′2″W / 42.44000°N 124.41722°W / 42.44000; -124.41722 (K29JN-D)
Heppner, etc. K28GD-D 282.1 kW518 m (1,699 ft)50561 45°12′46.4″N119°17′45″W / 45.212889°N 119.29583°W / 45.212889; -119.29583 (K28GD-D)
Hood River, etc. K36FG-D 361.2 kW370 m (1,214 ft)50575 45°44′30.4″N121°34′47.2″W / 45.741778°N 121.579778°W / 45.741778; -121.579778 (K36FG-D)
John Day K26FQ-D 260.3 kW−56 m (−184 ft)50567 44°26′2.5″N118°57′31.8″W / 44.434028°N 118.958833°W / 44.434028; -118.958833 (K26FQ-D)
Lakeview K19BK-D 191.22 kW−148 m (−486 ft)50569 42°10′41.5″N120°21′22.8″W / 42.178194°N 120.356333°W / 42.178194; -120.356333 (K19BK-D)
Newberg KOPB-TV (DRT) 290.21 kW339.6 m (1,114 ft)50589 45°21′15.4″N122°59′21.3″W / 45.354278°N 122.989250°W / 45.354278; -122.989250 (KOPB-TV (DRT))
Paisley K09VC-D 90.13 kW−128 m (−420 ft)50570 42°41′43.4″N120°33′14″W / 42.695389°N 120.55389°W / 42.695389; -120.55389 (K09VC-D)
K28LO-D 280.5 kW344 m (1,129 ft)129759 42°23′27.5″N120°22′7.8″W / 42.390972°N 120.368833°W / 42.390972; -120.368833 (K28LO-D)
Rainier K28IH-D 0.34 kW227 m (745 ft)130975 46°9′45.4″N122°51′9.4″W / 46.162611°N 122.852611°W / 46.162611; -122.852611 (K28IH-D) Rural Oregon Wireless Television
Rockway Beach K36GU-D 360.975 kW387 m (1,270 ft)49337 45°44′37.3″N123°56′27.4″W / 45.743694°N 123.940944°W / 45.743694; -123.940944 (K36GU-D)
Seneca K34LS-D 340.29 kW374 m (1,227 ft)184599 44°17′38.5″N119°2′31.8″W / 44.294028°N 119.042167°W / 44.294028; -119.042167 (K34LS-D) Oregon Public Broadcasting
Sentinel Hill KOPB-TV (DRT) 283 kW279.7 m (918 ft)50589 45°29′24.8″N122°41′49.9″W / 45.490222°N 122.697194°W / 45.490222; -122.697194 (KOPB-TV (DRT))
Silver Lake, etc. K08LG-D 80.22 kW359 m (1,178 ft)50577 43°9′53.5″N120°52′47.9″W / 43.164861°N 120.879972°W / 43.164861; -120.879972 (K08LG-D)
The Dalles, etc. K31HZ-D 312.06 kW563 m (1,847 ft)50573 45°42′42.4″N121°7′2.2″W / 45.711778°N 121.117278°W / 45.711778; -121.117278 (K31HZ-D)
Wedderburn, etc. K04MG-D 40.25 kW460 m (1,509 ft)13042 42°23′50.3″N124°21′55.3″W / 42.397306°N 124.365361°W / 42.397306; -124.365361 (K04MG-D)
Grays River, WA K31IR-D 310.8 kW597 m (1,959 ft)50568 46°27′39.3″N123°33′2.5″W / 46.460917°N 123.550694°W / 46.460917; -123.550694 (K31IR-D)

Analog-to-digital conversion

KOPB-TV shut down its analog signal, over VHF channel 10, on June 12, 2009, the official date on which full-power television stations in the United States transitioned from analog to digital broadcasts under federal mandate. The station's digital signal relocated from its pre-transition UHF channel 27 to VHF channel 10. [9] [10]

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References

  1. ↑ Nelson, Bob (June 2, 2009). "Call Letter Origins". Vol. 238. The Broadcast Archive. Archived from the original on February 18, 2016. Retrieved June 21, 2009.
  2. ↑ "Facility Technical Data for KOPB-TV". Licensing and Management System. Federal Communications Commission.
  3. ↑ "Educational TV Wins Good Opening Response". (February 7, 1961). The Oregonian , p. 9.
  4. 1 2 Swing, William (February 5, 1961). "Portland To Get First Glimpse Of Educational TV Monday". The Sunday Oregonian , p. 33.
  5. ↑ Farrell, Peter (February 15, 1989). "Not all of 'Elephant' has Dumbo cuteness" (TV column headed by review of new National Geographic special). The Oregonian, p. F7. Excerpt: "New name: After more than a quarter-century, Portland's public television and radio stations have new call letters. KOAP has become KOPB, for Oregon Public Broadcasting."
  6. 1 2 3 4 "Channels". OPB.org. Archived from the original on June 16, 2013. Retrieved February 25, 2013.
  7. ↑ RabbitEars TV Query for KOPB
  8. ↑ "OPB launches OPB WORLD, a 24/7 multicast channel". OPB.org. February 1, 2023. Retrieved May 6, 2023.
  9. ↑ "DTV Tentative Channel Designations for the First and the Second Rounds" (PDF). Archived from the original (PDF) on August 29, 2013. Retrieved March 24, 2012.
  10. ↑ CDBS Print [ dead link ]
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