slogan always learning live . learn . love . l.a. tv s force for good channels digital 41 uhf virtual 58 psip affiliations .1 pbs .2 pbs kids .3 create .4 first nations experience owner los angeles unified school district first air date november 5 1973 ; 42 years ago 1973 11 05 call letters meaning los angeles city schools former channel number s analog 58 uhf 1973 2009 transmitter power 1 000 kw height 900.8 metres 2 955 ft facility id 38430 transmitter coordinates 34 13 26 n 118 3 45 w 34.22389 n 118.06250 w 34.22389 ; 118.06250 coordinates 34 13 26 n 118 3 45 w 34.22389 n 118.06250 w 34.22389 ; 118.06250 licensing authority fcc public license information profile cdbs website www.klcs.org klcs channel 58 is a non commercial educational television station located in los angeles california united states . the station is licensed to the los angeles unified school district lausd and is one of eight television stations in the u.s. that is operated by a local school system . klcs s studios are located in downtown los angeles adjacent to downtown magnets high school and its transmitter is located atop mount wilson . klcs is one of three public broadcasting service pbs member stations in the los angeles television market ; the others are kvcr dt channel 24 in san bernardino and koce tv channel 50 in huntington beach which in 2011 replaced kcet as the primary pbs station in los angeles . klcs is the fifth most watched public television station in the country . contents 1 history 1.1 pre klcs years 1957 1973 1.2 present operations 2 digital television 2.1 digital channels 2.2 analog to digital conversion 2.2.1 channel sharing trial 3 references 4 external links history edit pre klcs years 1957 1973 edit in october 1957 the los angeles unified school district began producing televised instructional programs to be viewed in school by students . by the 1966 67 school year it was producing over 700 television programs per year for broadcast on various local stations in the los angeles area and leasing airtime to broadcast 40 hours of instructional programming monday through friday each week . over the years the district earned the support of teachers and administrators who were impressed with the effectiveness of the programs on the learning experience in the classroom . in 1963 the lausd began the application process to acquire a license from the federal communications commission and launch its own full service television station on uhf channel 58 . in 1967 the district also applied for and later received state and federal grants to build and equip a broadcast facility for the new station . in the summer of that year advocates for the lausd testified before the fcc on the benefits of an instructional television station for students staff and the local community . five years later on march 3 1972 the fcc granted the district a license to broadcast on channel 58 and the new station signed on the air on november 5 1973 as klcs the call letters an apparent acronym for los angeles city schools . 1 present operations edit klcs s former logo used from 2007 to 2013 . the station presently produces more than 700 hours of educational informational sports and entertainment programming a year including live telecourse instruction from the california state university system . it is one of five television stations licensed in the los angeles market that continue to utilize their original call signs alongside ktla channel 5 kttv channel 11 kcet channel 28 and kmex tv channel 34 . since 1984 klcs has produced homework hotline a weekday afterschool call in program where students receive homework help from lausd teachers and other faculty who appear on the show . in its first year homework hotline was featured in a time magazine article titled education help from the hotline and has won many los angeles area emmy awards over the years including two in 1986 for best instructional program and creative technical crafts . 2 unlike most public television stations klcs neither holds an annual pledge drive nor broadcasts its programming in high definition . however its website lists special premiums and discounts given to subscribers who support the station at various levels including recognition on air and in klcs monthly viewer magazine . 3 klcs was slated to begin high definition broadcasting in the autumn of 2014 but still broadcasts in standard definition as of april 2015 . for a period of time instead of broadcasting a 24 hour program schedule klcs signed off at the end of each broadcast day ceasing programming on some or all of its four subchannels at either 1 00 or 2 00 a.m. and resuming its schedule the next morning at either 5 00 or 6 00 a.m. one subchannel may continue overnight programming such as for create programs or regular meetings of the los angeles county board of supervisors while the others have individually signed off . in lieu of a test pattern a overnight themed title card is aired reminding viewers to tune in the next morning when programming resumes . this made klcs one of the largest television stations in the united states by market size to still have traditional sign on and sign off procedures . 4 klcs has since resumed a 24 hour schedule . its second digital subchannel also broadcasts 24 hours a day and is featured as part of directv s digital programming package . digital television edit digital channels edit the station s digital channel is multiplexed channel video aspect psip short name programming 5 58.1 480i 16 9 klcs 1 main klcs programming pbs 58.2 klcs 2 pbs kids 58.3 klcs 3 create 58.4 klcs 4 first nations experience the annenberg channel originally aired on channel 58.4 until october 1 2008 when that service was discontinued . analog to digital conversion edit klcs shut down its analog signal over uhf channel 58 at 3 p.m. on june 12 2009 as part of the federally mandated transition from analog to digital television . 6 the station s digital signal remained on its pre transition uhf channel 41 using psip to display klcs s virtual channel as 58 on digital television receivers which was among the high band uhf channels 52 69 that were removed from broadcasting use as a result of the transition . channel sharing trial edit in february 2014 klcs and kjla were granted special temporary authority by the fcc to conduct trials in partnership with ctia and the association of public television stations which tested the ability and viability of broadcasting two sets of television services within the same 6 mhz channel band including varying combinations of high and standard definition feeds . these tests came as the fcc was in the process of preparing for a spectrum auction in 2015 ; broadcasters will be able to voluntarily sell their television spectrum to the government and then receive profits from its sale to wireless providers . an fcc spokesperson stated that channel sharing would allow broadcasters to take advantage of the incentive auction s once in a lifetime financial opportunity while still maintaining its ability to run over the air television programming . 7 8 the experiment which occurred in march 2014 was deemed successful although certain scenarios particularly two hd feeds on both channels were found to affect video quality on more complex content . 9 10 on september 10 2014 klcs announced that following negotiations with kcetlink owner of educational independent and former pbs station kcet it would partake in a channel sharing arrangement and sell its existing spectrum during the incentive auction . both stations will retain separate licenses . 11 12 references edit about klcs from station website . retrieved 2 september 2010 . linan steven knbc and khj take top honors in local emmys los angeles times 5 may 1986 . retrieved 2 september 2010 . support klcs from station website . retrieved 31 august 2010 . tv schedules program schedule for all klcs subchannels at station website . retrieved 29 august 2010 . rabbitears tv query for klcs list of digital full power stations fcc grants sta for l.a. spectrum sharing . tv technology . retrieved 17 march 2014 . tv stations in los angeles to share a channel to free up spectrum . the new york times . retrieved 17 march 2014 . la trial finds that broadcasters can share their tv channels . gigaom . retrieved 29 march 2014 . overview of the klcs kjla channel sharing pilot a technical report pdf . alan popkin director of television engineering & technical operations klcs tv los angeles roger knipp broadcast engineer klcs tv los angeles eddie hernandez director of operations & engineering kjla tv . retrieved 21 may 2014 . kcet klcs in channel sharing partnership . tvnewscheck . 10 september 2014 . retrieved 10 september 2014 . kcet klcs to share channel and give up spectrum for auction . variety . retrieved 10 september 2014 . external links edit http klcs.org official website for klcs query the fcc s tv station database for klcs biafn s media web database information on klcs tv v t e pbs member stations in the state of california kvie 6 sacramento kixe 9 redding kqed 9 kqet 25 san francisco watsonville keet 13 eureka kpbs 15 san diego kvpt 18 kvpt lp 34 fresno bakersfield krcb 22 cotati kvcr 24 san bernardino koce 50 huntington beach kqeh 54 san jose klcs 58 los angeles see also abc cbs cw fox ion mynetworktv nbc pbs other stations in california v t e television stations in southern california including los angeles orange county and portions of the inland empire english language stations major channels in bold kcbs tv 2.1 cbs 2.2 decades knbc 4.1 nbc 4.2 cozi tv ktla 5.1 cw 5.2 antenna tv 5.3 this tv ksfv ca 6.1 hsn kabc tv 7.1 abc 7.2 lwn 7.3 laff kfla ld 8.1 rtv 8.2 cstv 8.3 tuff tv 8.4 vmas kcal tv 9.1 ind kiio ld 10.1 ind. 10.2 infomercials kttv 11.1 fox ktbv ld 12.1 cornerstone tv 12.2 3abn dare to dream 12.3 gbn 12.4 3abn 12.5 al karma tv 12.6 cnl kcop tv 13.1 mntv 13.2 buzzr 13.3 movies 13.4 h & i knet cd 25.1 metv kvhd ld 26.1 evine live kpxn tv 30.1 ion 30.2 qubo 30.3 ion life 30.4 ion shop 30.5 qvc over the air 30.6 hsn kmex tv 34.3 bounce ktav ld 35.2 guideus tv 35.4 sbn 35.5 ctvn 35.6 peace tv khiz ld 39.1 the country network 39.2 jtv ktbn tv 40.1 tbn 40.2 church 40.3 juce tv smile 40.5 salsa kftr dt 46.2 gettv 46.3 escape 46.4 grit kdoc tv 56.1 ind 56.3 metv 56.4 comet tv 56.8 works kilm 64.1 sbn kedd ld 69.1 hsn public television kvcr dt 24.1 pbs 24.2 fnx 24.3 kvcr desert cities 24.4 create kcet 28.1 public ind 28.2 link tv 28.3 v me spanish 28.4 nhk world koce tv 50.1 pbs hd 50.2 pbs plus 50.3 daystar 50.4 world klcs 58.1 pbs 58.2 kids 58.3 create 58.4 fnx ethnic stations v t e foreign language television stations in the greater los angeles area spanish kvtu lp 3 kcio lp 33 galavision kwhy tv 22.1 mundomax 22.2 ind 22.3 rel 22.4 rel 22.5 majestad 22.6 jres knet cd 25.3 kdoc 56.2 esne kvhd ld 26.2 rel khtv cd 27.1 nbc universo kcet 28.3 v me p blico kwju cd 32 almavision kmex dt 34.1 uni ktav ld 35.1 35.3 35.8 alma 35.7 rel k36jh 36 vida ktbn tv 40.4 enlace kxla 44.11 crtv kftr dt 46.1 unim s kvea 52.1 tel 52.2 exitos kaza tv 54.1 aza 54.2 azteca novelas kjla 57.1 latv krca 62.1 estrellatv 62.4 inmigrante tv armenian kiio ld 10.3 and 10.4 armenian language programming ksci 18.5 usarmenia 18.6 aabc tv 18.7 shant tv usa 18.9 horizon