Oxford transmitting station

Columns: Frequency | UHF | kW | Service | System
538.000 MHz | 29 | 8 | Arqiva ( Mux D ) | DVB-T | 578.000 MHz | 34 | 10 | BBC ( Mux 1 ) | DVB-T | 690.000 MHz | 48 | 8 | Arqiva ( Mux C ) | DVB-T | 695.25 MHz | 49 | 40 | Channel 5 | PAL System I | 713.833 MHz | 51- | 6 | SDN ( Mux A ) | DVB-T | 721.833 MHz | 52- | 6 | BBC ( Mux B ) | DVB-T | 727.25 MHz | 53 | 500 | Channel 4 | PAL System I | 759.25 MHz | 57 | 500 | BBC One | PAL System I | 783.25 MHz | 60 | 500 | Central | PAL System I | 807.25 MHz | 63 | 500 | BBC Two | PAL System I | 850.000 MHz | 68 | 10 | Digital 3 & 4 ( Mux 2 ) | DVB-T

Example questions:
Of the higher frequencies , what service at Oxford transmitting station between 1998-2011 tends to broadcast more `` highbrow `` programmes ? | Which service at Oxford transmitting station is owned by ITV plc under the licensee of ITV Broadcasting Limited from 1998 to 2011 ? | Who owns the service at Oxford transmitting station between 1998-2011 that uses the system that is being less used by most ? | What other station service at Oxford transmitting station between 1998-2011 also uses this system that is owned by Macquarie Bank ?

Answers:
BBC Two | Central | RTL Group | Amateur television operators