The Four Ashes site, owned by Thames Valley Police, is now the tenth site used by DRg and augments their DAB transmissions in the High Wycombe area.

DRg is one of the few services to transmit using the reduced protection level PL4. This allows them to cram in a bit more audio data but also means their signal is noticeably more prone to corruption and decoding errors in adverse reception conditions. Additional transmitters are used in an ayyempt to overcome the reception problems this causes.