The Wrekin transmitting station

Columns: Frequency | UHF | kW | Operator
474.000 MHz | 21 | 2 | BBC ( Mux 1 ) | 498.166 MHz | 24+ | 2 | SDN ( Mux A ) | 522.166 MHz | 27+ | 2 | BBC ( Mux B ) | 554.000 MHz | 31 | 2 | Digital 3 & 4 ( Mux 2 ) | 618.166 MHz | 39+† | 2 | BBC ( Mux 1 ) | 642.000 MHz | 42† | 2 | SDN ( Mux A ) | 666.000 MHz | 45† | 2 | BBC ( Mux B ) | 698.000 MHz | 49† | 2 | Digital 3 & 4 ( Mux 2 ) | 730.000 MHz | 53 | 1 | Arqiva ( Mux C ) | 762.000 MHz | 57 | 1 | Arqiva ( Mux D )

Example questions:
What is the UHF of the station , transmitted from the Wrekin tower , whose operator is the world 's oldest national TV broadcaster ? | What is the UHF of the TV station , broadcast through the transmitting tower on the Wrekin , whose operator is now wholly owned by ITV plc ? | What is the kW of the digi TV station , broadcast through The Wrekin transmitting tower , whose operator employs 22,000 people ? | What is the kW of the TV stations whose operator that carries both ITV and Channel 4 through The Wrekin transmitting tower ?

Answers:
21 | 24+ | 2 | 2