The Tower Hill transmitter will be retuned today, shifting WIN and SBS channels to different frequencies and possibly causing interruptions to all television services broadcast from the transmitter. 

The move is expected to affect only viewers who take their signal from Tower Hill, including Koroit, Port Fairy and some parts of Warrnambool. Once the adjustment is completed, viewers will need to retune their televisions, set-top boxes or digital recorders. 

A spokesman from the Department of Communications said this should only be done after 3.30pm tomorrow. 

“There may also be outages to all TV services over the next two days. Viewers will not need to retune again — the TV services will reappear once the work at the transmission site has been completed,” the spokesman said. 

“There may also be some unavoidable temporary outages to some TV channels from 17 to 19 September. These outages will take place between midnight and 6am to ensure any disruptions are minimal.”

The frequency shift is part of the National Retune Program, which will free up broadcast spectrum for new technologies like mobile broadband. 

Other transmitters in the region will retune in the coming weeks, including transmitters at Mount Noorat, Cobden, Casterton and Timboon on September 17. For more information visit the website http://retune.digitalready.gov.au/