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Channel 40 is the primary road safety channel Australia-wide, most commonly used by trucks including pilot/escort vehicles for oversized loads. [6] [7] Users should be aware that UHF CB channels 31 to 38 and 71 to 78 are the 'input' channels for repeaters. Users should avoid using these channels to avoid interfering with repeaters.
In Australia, UHF was first anticipated in the mid-1970s with TV channels 27–69. The first UHF TV broadcasts in Australia were operated by Special Broadcasting Service (SBS) on channel 28 in Sydney and Melbourne starting in 1980, and translator stations for the Australian Broadcasting Corporation (ABC).
There is a frequency offset for many DTV channels between Australia and NZ, because of historical reasons relating to the introduction of PAL. Both Australia and New Zealand use 7 MHz channel spacing (for PAL B) on VHF, but the frequencies and channel numbers differ substantially because of Australia revising its VHF TV band usage.
Television broadcasting in Australia began officially on 16 September 1956, with the opening of TCN-9, quickly followed by national and commercial stations in Sydney and Melbourne, all these being in 625-line black and white. The commencement date was designed so as to provide coverage of the Olympic Games in Melbourne. It has now grown to be a ...
The process of aggregation during the late 80s to mid 90s saw regional stations take on affiliations with metropolitan channels for programming, a practice that has continued into digital television with affiliated stations carrying various multichannels from their metropolitan counterparts.
Channels B, C, D, H, H1, and H2 are identical to Channels E4, E4A, E5, E10, E11, and E12, respectively. Channel A video carrier is the same as Channel E2 audio carrier and thus it used to be common that the audio from a distant TV station on channel E2 received via Sporadic E interferes with Channel A video and vice versa.
At the time, SBS was broadcasting on UHF Channel 28 and VHF Channel 0 (pronounced as "oh" and not "zero"), with a planned discontinuation of the latter at some time in the future. Bruce Gyngell, who introduced television to Australia in 1956, was given the task of introducing the first batch of programs on the new station.
"Channel 31" is the colloquial name for some metropolitan community-licensed television stations throughout Australia, with Adelaide Community Television known as Channel 44. The name originates from UHF 31, the frequency and channel number reserved for analogue broadcasts by metropolitan community television stations. By 2010, all stations ...