In the United States, digital television broadcasts, or DTV, can be received via cable, via internet, via satellite, or via free over-the-air (OTA) digital terrestrial television - much like analog television broadcasts have been.
 Full-power analog television broadcasts, however, were required by U.S. federal law to cease by June 12, 2009.
 Low-power, Class A, and TV Translator stations are not currently required to cease analog broadcasts.
 Also by law, digital broadcasts - when transmitted as OTA signals - must conform to ATSC standards.
; it is unclear whether satellite operators are free to use their own proprietary standards ; and many standards exist for Internet television (most are proprietary).
KSTV-LP was a low power, analog television station in Sacramento, California, United States, previously affiliated with Spanish-language television network Azteca (formerly Azteca América).
 It was owned by Lazer Broadcasting.
 It operated on analog channel 32.
ACE TV was a free-to-air community television channel in Adelaide, South Australia which broadcast from May 1994 to December 2002.
 ACE TV was cancelled in 2002 due to breaching of licence conditions.
 The last ACE TV broadcast on-screen was in May 2002.
 ACE TV was superseded by C31 Adelaide, which was launched on 23 April 2004.
The digital television transition, also called the digital switchover, the analog switch-off (ASO), or the analog shutdown, is the process in which analog television broadcasting is converted to and replaced by digital television.
 This primarily involves the conversion of analog terrestrial television to digital terrestrial.
 However, it also involves analog cable conversion to digital cable, as well as analog to digital satellite television.
 This is an involved process because the existing analog television receivers owned by viewers cannot receive digital broadcasts; viewers must either purchase new digital TV's or converter boxes which change the digital signal to an analog signal which can be viewed on the old TV.
Channel 44 (C44) is a free-to-air community television channel in Adelaide, South Australia.
 C44 features locally and nationally made content and has been broadcasting since 23 April 2004.
 Previously known as C31 when on analogue television, C44 made the switch to digital on 5 November 2010 and switched off its analogue signal on 31 May 2012.
 C44 airs a range of local, interstate and international content that is relevant to the local community.
A television station is a set of equipment managed by a business, organisation or other entity, such as an amateur television (ATV) operator, that transmits video content via radio waves directly from a transmitter on the earth's surface to a receiver on earth.
 Most often the term refers to a station which broadcasts structured content to an audience or it refers to the organization that operates the station.
 A terrestrial television transmission can occur via analog television signals or, more recently, via digital television signals.
 Television stations are differentiated from cable television or other video providers in that their content is broadcast via terrestrial radio waves.
 A group of television stations with common ownership or affiliation are known as a TV network and an individual station within the network is referred to as O&O or affiliate, respectively.
Analog passthrough is a feature found on some digital-to-analog television converter boxes.
 Boxes without analog passthrough only allow digital TV (ATSC standard) to be viewed on older, analog-only (NTSC standard) TVs.
 Those with analog passthrough allow both digital and analog television to be viewed on older TVs.
WVOA-LP is a low-power analog television station that operates as a radio station.
 The station, formerly known as WMBO-LP, operates a brokered religious format known as "Love Radio"; "Love Radio" had previously aired in the Syracuse area on FM 103.9, now known as WSEN.
 WVOA-LP operates on analog channel 6, allowing its audio feed to be heard on the FM radio dial at 87.7 MHz.
 It is not to be confused with WSTQ-LP, Syracuse's CW affiliate, which broadcasts on channel 14 but uses its cable position of channel 6 to brand as "CW 6".
Digital television (DTV) is the transmission of television signals, including the sound channel, using digital encoding, in contrast to the earlier television technology, analog television, in which the video and audio are carried by analog signals.
 It is an innovative service that represents the first significant evolution in television technology since color television in the 1950s.
 Digital TV can transmit multiple channels in the same bandwidth occupied by a single channel of analog television.
 A switchover from analog to digital broadcasting began around 2006 in some countries, and many industrial countries have now completed the changeover, while other countries are in various stages of adaptation.
 Different digital television broadcasting standards have been adopted in different parts of the world; below are the more widely used standards:
A digital television adapter (DTA), commonly known as a converter box, is a television tuner that receives a digital television (DTV) transmission, and converts the digital signal into an analog signal that can be received and displayed on an analog television set.
 The input digital signal may be over-the-air terrestrial television signals received by a television antenna, or signals from a digital cable system.
 It normally does not refer to satellite TV, which has always required a set-top box either to operate the big satellite dish, or to be the integrated receiver/decoder (IRD) in the case of direct-broadcast satellites (DBS).

Question: ACE TV was superseded by the station that was previously known as what on analog television?
Answer: C31