KTBU

==Technical information==
===Subchannels===
The station's signal is [[Multiplex (TV)|multiplexed]]:
{| class="wikitable"
|+Subchannels of KTBU<ref>[http://www.rabbitears.info/market.php?request=station_search&callsign=KTBU#station RabbitEars TV Query for KTBU]</ref>
! scope = "col" | [[Digital subchannel#United States|Channel]]
! scope = "col" | [[Display resolution|Res.]]
! scope = "col" | [[Aspect ratio (image)|Aspect]]
! scope = "col" | Short name
! scope = "col" | Programming
|-
! scope = "row" | 55.1 
| [[720p]] || rowspan=3|[[16:9]] || Quest || [[Quest (American TV network)|Quest]]
|-
! scope = "row" | 55.3 
| [[480i]] || Nacion || Nación TV {{in lang|es}}
|- style="background-color: #E6FFF7;"
! scope = "row" | [[KHOU|11.11]] 
| [[1080i]] || KHOU-HD || [[CBS]] ([[KHOU]])
|}
{{legend|#E6FFF7|Simulcast of subchannels of another station}}

===Analog-to-digital conversion===
KTBU discontinued regular programming on its analog signal, over [[UHF]] channel 55, on June 12, 2009, as part of the [[Digital television transition in the United States|federally mandated transition from analog to digital television]].<ref name="Analog to Digital">[http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-06-1082A2.pdf List of Digital Full-Power Stations] {{webarchive|url=https://web.archive.org/web/20130829004251/http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-06-1082A2.pdf |date=August 29, 2013 }}</ref> The station's digital signal remained on its pre-transition UHF channel 42,<ref name="FCCForm387">[http://fjallfoss.fcc.gov/cgi-bin/ws.exe/prod/cdbs/forms/prod/cdbsmenu.hts?context=25&appn=101238126&formid=387&fac_num=22204 CDBS Print<!-- Bot generated title -->]</ref><ref>[http://www.chron.com/disp/story.mpl/headline/metro/6251131.html Consumer Watch: Stations have more DTV work to do], ''[[Houston Chronicle]]'', February 6, 2009.</ref> using [[virtual channel]] 55.