KOBI (channel 5) is a television station in Medford, Oregon, United States, affiliated with NBC. It serves as the flagship property of locally based California Oregon Broadcasting, Inc. KOBI's studios are located on South Fir Street in downtown Medford, and its transmitter is located atop Kings Mountain, 28 miles (45 km) northwest of the city.

KOTI (channel 2) in Klamath Falls operates as a full-time satellite of KOBI; this station maintains a news bureau on South 7th Street in downtown Klamath Falls and a transmitter atop Stukel Mountain. KOTI covers areas of southwest and south-central Oregon that receive a marginal to non-existent over-the-air signal from KOBI, although there is significant overlap between the two stations' contours otherwise. KOTI is a straight simulcast of KOBI; on-air references to KOTI are limited to Federal Communications Commission (FCC)-mandated hourly station identifications during newscasts and other programming.

Together, KOBI and KOTI serve 12 mostly rural counties in southern Oregon and northern California.

KOBI was founded on August 1, 1953, by Bill Smullin, a 20-year veteran of the television industry. Its call letters were originally KBES-TV ("Best TV"), and it carried programming from all four major networks. However, for its first 25 years, it was primarily a CBS affiliate.

Smullin soon realized that KBES' signal was not strong enough to cover all of southern Oregon, which the FCC had ruled was part of the Medford market, so he bought the license for channel 2 in Klamath Falls, and KOTI debuted on August 12, 1956. Its call letters KOTI are believed to have come from the city's local four-year college, the Oregon Institute of Technology (formerly Oregon Technical Institute). Originally, KOTI carried all three networks.

On September 21, 1964, Smullin changed the call letters to KTVM. When channel 10 was allocated to Medford, Smullin helped the owners of KMED get the license, as well as space on his transmitter on Blackwell Hill. Partly because of his help, KMED-TV (channel 10, now KTVL) signed on in 1961. In 1968, KTVM moved to a powerful transmitter on King Mountain and changed its calls to the current KOBI.

By 1978, KOBI had become a primary ABC affiliate, which by then had become the top network. However, they continued to carry some CBS programs (such as the CBS Evening News and several daytime shows). In 1983, KOBI picked up NBC from KTVL, which switched to CBS. It carried a few ABC programs for another year until KDRV (channel 12) signed on.

For many years, KOBI branded itself as "Channel 5M", for its channel bullet designation within the Oregon State/Southern Oregon State edition of TV Guide, with a logo showing a "5" on an Interstate Highway shield, reflecting the area's major interstate highway, I-5. This type of station theming around interstate numbers is common with radio stations, but rare with television stations. The interstate shield motif was later extended to KOTI and KRCR. KOBI rebranded itself as "The News Channel" in 1998 and as "NBC 5" in 2004, but continues to theme its station logo around the I-5 shield.

Bill Smullin retired in 1985 and was succeeded by his daughter, Patricia C. "Patsy" Smullin, who serves as owner and president today.

KOBI added a DT2 channel for AccuWeather's local and national weather digital channel to KOBI's digital signal in early 2008. It was replaced by This TV in January 2014, then Cozi TV in December 2019. In May 2022, Quest and Twist were added.

This section needs additional citations for verification. Please help improve this article by adding citations to reliable sources in this section. Unsourced material may be challenged and removed. Find sources: "KOBI" TV – news · newspapers · books · scholar · JSTOR (June 2024) (Learn how and when to remove this message)

During the 1980s, KOBI broadcast a popular interactive game show called Jackpot Bingo, hosted by Tom Carnes. The show aired before Days of Our Lives and took after the popular Dialing for Dollars format. Jackpot Bingo gave contestants the opportunity to win up to $5,000 in cash by playing blackout bingo. However, contestants usually won the minimum $200 prize. Carnes was replaced by Sally Holliday in 1987 and the show was renamed $10,000 Jackpot Bingo as the prize money doubled. Still, contestants usually won $200. The show garnered the highest ratings for its time slot, although it was canceled in 1988.

This section needs to be updated. Please help update this article to reflect recent events or newly available information. (October 2015)

The Academic Challenge quiz bowl program, similar to GE College Bowl, places local high schools in a head-to-head battle for the championship title and over $40,000 in scholarship money.

Twenty high schools from Southern Oregon and Northern California participate in the Academic Challenge. Each school brings in a team of five students, four participating and one alternate, who answer a series of questions from the host, NBC 5 chief meteorologist Jeff Heaton, on topics such as history, math, literature, current events and a variety of other categories.

At the end of this double-elimination competition the final two teams split the scholarship money (60% to the championship team, 40% to the runner-up team).

The idea for Academic Challenge started at KRCR-TV in Redding in 1998 and was hosted by Gary Gunter from 1998 to 2005, then Tim Mapes from then on. NBC 5's newly hired general manager Bob Wise brought the identically formatted program to southern Oregon in 2005.

The program regularly aired on Sundays at 6:30 p.m., or after NBC Sunday Night Football and NBC 5 News during the NFL season, but has since been canceled.

In 2005, KOBI started a special program called the Southern Oregon Meth Project to educate viewers and concerned citizens about the dangers of methamphetamine and what can be done to prevent it. The project was headed up by KOBI's lead news anchor Christina Anderson, where she remained until her departure for KOVR in Sacramento in 2010.

KOBI presently broadcasts 22 hours of locally produced newscasts each week (with four hours each weekday and one hour each on Saturdays and Sundays).

KOTI previously produced its own newscasts (separate from KOBI) focusing on the eastern portion of the Medford–Klamath Falls market. The newscasts included NBC 2 News at 5, 6 and 11 p.m. Lyle Ahrens had served as the Klamath Basin news bureau chief, but retired in 2020.

At one time, KOTI aired a separate newscast at 6:30 p.m. with its own news bureau before becoming a repeater of KOBI.

After KMVU-DT discontinued its 7 a.m. and 10 p.m. newscasts in December 2023, KOBI added a 10 p.m. newscast to its Cozi TV subchannel on January 8, 2024.

The stations' signals are multiplexed:

Subchannels of KOBI and KOTI

Channel		Res.	Aspect	Short name		Programming
KOBI	KOTI			KOBI	KOTI
5.1	2.1	1080i	16:9	KOBI-TV	KOTI-TV	NBC
5.2	2.2	480i		COZI		Cozi TV
5.3	2.3			QUEST		Quest

KOBI shut down its analog signal, over VHF channel 5, on February 17, 2009, the original target date on which full-power television stations in the United States were to transition from analog to digital broadcasts under federal mandate (which was later pushed back to June 12, 2009). The station's digital signal relocated from its pre-transition UHF channel 15 to VHF channel 5 for post-transition operations.

KOTI shut down its analog signal, over VHF channel 2, on February 17, 2009. The station's digital signal remained on its pre-transition VHF channel 13, using virtual channel 2.

KOBI has a UHF translator, K32DY-D, to serve non-antenna-rotator-equipped households between Medford and Ashland. It is located on Mt. Baldy, east of Phoenix.

• K07JT-D Brookings (translates KOBI)
• K07PZ-D Cave Junction (translates KOBI)
• K06NS-D Chiloquin (translates KOTI)
• K36BX-D Coos Bay (translates KOBI)
• K16LL-D Cottage Grove (translates KOBI)
• K25EN-D Gold Beach (translates KOBI)
• K31OQ-D Grants Pass (translates KOBI)
• K33PM-D Grants Pass (translates KOBI)
• K34KJ-D Harbor (translates KOBI)
• K07NR-D Lakeview, etc. (translates KOTI)
• K32DY-D Medford (translates KOBI)
• K36IB-D Midland, etc. (translates KOTI)
• K08AK-D Port Orford, etc. (translates KOBI)
• K20MK-D Roseburg (translates KOBI)
• K13MI-D Squaw Valley, etc. (translates KOBI)
• K07HS-D Williams (translates KOBI)
• K25OK-D Yoncalla (translates KOBI)
• K34OW-D Yreka, CA (translates KOBI)

• Official website
• ThisTV Southern Oregon website
• Western States Museum of Broadcasting: History of Television In Southern Oregon
• Bill Smullin: Southern Oregon TV's pioneer