Talley transmitting station

The Talley television relay station is sited on high ground to the north of the village of Talley in Carmarthenshire. It was originally built in 1986 as a fill-in relay for UHF analogue television covering the community of Talley. It consists of a 17 m wooden telegraph pole standing on a hillside which is itself about 220 m above sea level. The transmissions are beamed southwest and northwest to cover all the small settlements of the area and to provide a signal for the Llansawel repeater about 5 km to the northwest. The Talley transmission station is owned and operated by Arqiva.

Talley
Talley
Carmel
Mast height17 metres (56 ft)
Coordinates51°58′52″N 3°58′55″W
Grid referenceSN639332
Built1986
Relay ofCarmel
BBC regionBBC Wales
ITV regionITV Wales

Talley transmitter re-radiates the signal received off-air from Carmel about 20 km to the southwest. When it came, the digital switchover process for Talley duplicated the timing at Carmel with the first stage taking place on 26 August 2009 and with the second stage being completed on 23 September 2009. 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]

Channels listed by frequency

Analogue television

Spring/Summer 1986 - 26 August 2009

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

Frequency UHF kW Service
615.25 MHz 39 0.0065 BBC One Wales
639.25 MHz 42 0.0065 S4C
663.25 MHz 45 0.0065 BBC Two Wales
695.25 MHz 49 0.0065 ITV1 Wales (HTV Wales until 2002)

Analogue and digital television

26 August 2009 - 23 September 2009

The UK's digital switchover commenced at Carmel (and therefore at Talley and all its other relays) on 26 August 2009. Analogue BBC Two Wales on channel 45 was first to close, and ITV Wales was moved from channel 49 to channel 45 for its last month of service. Channel 49 was replaced by the new digital BBC A mux which started up in 64-QAM and at full power (i.e. 2 W).

Frequency UHF kW Service System
615.25 MHz 39 0.0065 BBC One Wales PAL System I
639.25 MHz 42 0.0065 S4C PAL System I
663.25 MHz 45 0.0065 ITV1 Wales (HTV Wales until 2002) PAL System I
698.000 MHz 49 0.002 BBC A DVB-T

Digital television

23 September 2009 - present

The remaining analogue TV services were closed down and the digital multiplexes took over on the original analogue channels' frequencies.

Frequency UHF kW Operator
642.000 MHz 42 0.002 Digital 3&4
666.000 MHz 45 0.002 BBC B
698.000 MHz 49 0.002 BBC A
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gollark: The parser supports anomalous unicode, muahaha.
gollark: ... oh, my bad.
gollark: Troubling, `<=` isn't working.

References
  1. "Freeview on Talley TV transmitter". ukfree.tv. Retrieved 2012-02-17.
  2. http://www.bbceng.info/Eng_Inf/EngInf_25.pdf
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