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 | 487.25 MHz | 23 | 10 | ITV Wales ( HTV until 2002 ) | PAL System I | 505.833 MHz | 25- | 0.6 | BBC ( Mux 1 ) | DVB-T | 511.25 MHz | 26 | 10 | BBC Two 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 System is associated with the Kilvey Hill TV Operator who is previously known as Harlech Television ( HTV ) ? | What is the kW for the TV Operator that broadcasts around three hours of non-news programmes each week ? | What is the kW for the Kilvey Hill TV Operator that employs over 22,000 staff in total ? | What system does the Kilvey Hill TV operator with 131 employees use ?

Answers:
PAL | 10 | 0.6 | PAL System I