Kilvey Hill transmitting station

Columns: Frequency | UHF | kW | Operator | System
474.000 MHz | 21 | 0.1 | Arqiva ( Mux C ) | DVB-T | 481.833 MHz | 22- | 0.6 | Digital 3 & 4 ( Mux 2 ) | DVB-T | 490.000 MHz | 23 | 2 | BBC A | DVB-T | 511.25 MHz | 26 | 10 | ITV Wales | PAL System I | 529.833 MHz | 28- | 0.3 | SDN ( Mux A ) | DVB-T | 535.25 MHz | 29 | 10 | S4C | PAL System I | 553.833 MHz | 31- | 0.1 | Arqiva ( Mux D ) | DVB-T | 561.833 MHz | 32- | 0.6 | BBC ( Mux B ) | DVB-T | 567.25 MHz | 33 | 10 | BBC One Wales | PAL System I | 583.25 MHz | 35 | 10 | Channel 5 | PAL System I

Example questions:
What is the kW at the Kilvey Hill transmitting station of the operator is previously known as Harlech Television ? | What is the system type at the Kilvey Hill transmitting station of the operator that is the fourth-oldest television channel in the United Kingdom ? | What is the UHF channel at Kilvey Hill transmitting station of the operator whose headquarters is located at Crawley Court in the village of Crawley , Hampshire ? | What is the kW at the Kilvey Hill transmitting station of the operator that is the largest broadcaster in the world by number of employees ?

Answers:
10 | PAL System I | 21 | 2