There are to be two Retune events for Mendip transmitter viewers.
1. Wednesday 28 March
Reason: Arq A Mux moves from channel 67 to channel 56.
2. 2013 (date not yet specified)
Reason: BBC A Mux moves from channel 61 to ch 49
Both of the above events are the result of selling channels 61 to 68 to the mobile phone networks for their new 4G service due to be introduced in 2013.
There are increases in power for the COM Muxes (SDN, Arq A and Arq B) occurring on 27 and 28 March of this year. That does not require a retune but reception of those three Muxes after 28 March will be improved in currently difficult reception areas. All Muxes will from then on be at the full 100 kW of power.