KQEH (channel 54), branded on-air as KQED Plus, is a PBS member television station licensed to San Jose, California, United States, serving the San Francisco Bay Area. The station is owned by KQED Inc., alongside fellow PBS station KQED (channel 9) and NPR member KQED-FM (88.5) in San Francisco. The three stations share studios on Mariposa Street in San Francisco's Mission District and transmitter facilities atop Sutro Tower; until January 17, 2018, KQEH's transmitter was located atop Monument Peak.

The station first signed on the air on October 19, 1964, as KTEH, originally intended to serve the South Bay. In the late 1990s, KTEH bought KCAH in Watsonville, which was founded in 1989 to serve as the PBS station for the Santa Cruz–Salinas–Monterey market. Before being acquired by KQED, KTEH maintained a Technical Volunteer program, which allowed volunteers to learn how to operate cameras, audio, shading, directing, and other production and technical responsibilities, while minimizing its costs. These volunteers made up the technical crews for all of their pledge drives and auction programming, as well as other occasional live broadcasts.

In 2006, KQED Inc. and the KTEH Foundation agreed to merge to form Northern California Public Broadcasting. As a result of the merger, KCAH changed its call letters to KQET on August 12, 2007. Subsequently, on October 1, 2007, KQET, which became a satellite of KTEH following its acquisition of the station, switched programming sources from KTEH to KQED. KQET's programming is carried on the second digital subchannel of KQED.

In December 2010, the Board of Directors of Northern California Public Broadcasting changed the organization's name to KQED Inc. KTEH shut down its studio on Schallenberger Road, moved its operations to the KQED studio in San Francisco, changed its call letters to KQEH, and rebranded itself as "KQED Plus" on July 1, 2011, after research found that most viewers were unaware that KTEH was related to KQED; other aspects of the station's operation, including programming and staff, were not affected by this change.

In April 1981, KTEH started showing the British science-fantasy show Doctor Who, which ran on the station until January 2003. On April 10, 2007, Doctor Who returned to the station with the airing of the program's 2005 revival. KTEH has also aired another British sci-fi show, Red Dwarf. In 1998, KTEH aired the entire eighth series of Red Dwarf in one night. In doing so, many episodes were shown on KTEH before their broadcast on British television.

In the mid-1990s, Scott Apel hosted airings of The Prisoner with commentary, using an episode ordering he devised. The ordering is still a popular one in the Prisoner fandom, referred to as the "KTEH order".^{[citation needed]}

KTEH also has a history of airing anime. From 1996 to 2003, the station would air various anime series on Sunday nights. KTEH was notable as the station that saw the broadcast premiere of the English-subtitled Neon Genesis Evangelion, as well as the dubbed version of the Tenchi Universe TV series. Other anime aired on KTEH include Bubblegum Crisis, Key the Metal Idol, subtitled versions of Dirty Pair Flash, All Purpose Cultural Cat Girl Nuku Nuku, Uruesi Yatsura, and Sakura Wars, and dubbed versions of Serial Experiments Lain, City Hunter, Ruin Explorers, Please Save My Earth, Ranma ½, and Generator Gawl. KTEH also aired Robotech, an English production that was originally a combination of three similar, but otherwise unrelated anime series (Super Dimensional Fortress Macross, Super Dimensional Cavalry Southern Cross, and Genesis Climber Mospeada) that originally aired on commercial broadcast television in the United States.

Karen Roberts was the person responsible for acquiring the programming for both British television series and Japanese anime.