The restack requires the retuning of the transmitter frequencies and the associated filterplexers between the transmitter output and the broadband antenna except where there is a change from UHF to VHF such as SBS main transmitters in Capital cities excluding Darwin were a new VHF transmitter/filterplexer is required.
Nearly all translator, and some main country restack sites were changed on a single day.In some areas of Melbourne, Sydney and the Gold Coast there are large numbers of large MATV systems. These sites were given 3 months of simulcasting of the old and new RF channels. This was to allow the antenna installation industry to retune MATV systems without the users loosing program. If building managers did not get antenna installation companies to retune their amplifiers then they lose signals when the old transmitters are switched off.
Edited by alanh, 20 November 2014 - 09:55 PM.