Preseli transmitting station

Columns: Frequency | UHF | kW | Service | System
599.25 MHz | 37 | 100 | Channel 5 | PAL System I | 618.000 MHz | 39 | 1 | SDN ( Mux A ) | DVB-T | 623.25 MHz | 40 | 100 | BBC Two Wales | PAL System I | 641.833 MHz | 42- | 2 | BBC ( Mux B ) | DVB-T | 647.25 MHz | 43 | 100 | ITV1 Wales ( HTV Wales until 2002 ) | PAL System I | 665.833 MHz | 45- | 1 | Arqiva ( Mux C ) | DVB-T | 671.25 MHz | 46 | 100 | BBC One Wales | PAL System I | 682.166 MHz | 47+ | 2 | BBC ( Mux 1 ) | DVB-T | 697.833 MHz | 49- | 1 | Arqiva ( Mux D ) | DVB-T | 703.25 MHz | 50 | 100 | S4C | PAL System I | 714.166 MHz | 51+ | 2 | Digital 3 & 4 ( Mux 2 ) | DVB-T

Example questions:
What is the name of the individual who bought out the Preseli transmitting station that has a UHF of 37 in 2010 ? | What is the name of the area where the Preseli transmitting station with a UHF of 45- is located ? | What company took over the Preseli transmitting station with the lowest UHF number ? | What was the original name of the Preseli transmitting channel that has a UHF between 42 and 45 ? | What used to be the sister channel to the Preseli transmitting station with a UHF of 40 ?

Answers:
Richard Desmond | Crawley Court | Viacom | Harlech Television | BBC 2W