It was originally built in 1986 as a fill-in relay for UHF analogue television covering the community of Talley.

Talley transmitter re-radiates the signal received off-air from Carmel about 20 km to the southwest.

After the switchover process, analogue channels had ceased broadcasting permanently and the Freeview digital TV services were radiated at an ERP of 2 W each.

[1] Talley entered service in late spring/early summer 1986,[2] and (being in Wales) transmitted the S4C variant of Channel 4.

The UK's digital switchover commenced at Carmel (and therefore at Talley and all its other relays) on 26 August 2009.