Wales Region Transmitters

This page provides detailed coverage information for professional aerial installers and related trade services.

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Wenvoe
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD	SDN	ARQ A	ARQ B	COM7 HD	COM8 HD	L-CDF
		N	N	N	N	N	N	N	N	N
New baseline	02 Oct 2013	41+	44	47	42+	45	39+
Multiplex launch	10 Dec 2013	41+	44	47	42+	45	39+	31
Multiplex launch. Retune may provide additional services.	10 Feb 2014	41+	44	47	42+	45	39+	31	51
Multiplex launch	14 May 2015	41+	44	47	42+	45	39+	31	37	51
COM channel change and power-up	15 May 2019	41+	44	47	42+	45	39+	31	56	37
COM channel change	19 Jun 2019	41+	44	47	42+	45	39+	55	56	37
COM mux FEC change	10 Feb 2020	41+	44	47	42+	45	39+	55	56	37
Multiplex closes	30 Jun 2020	41+	44	47	42+	45	39+	55		37

Wenvoe has 76 relay transmitters

Relay transmitters

Rhondda VP
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23	26	29

Mynydd Machen
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23+	26+	29+
PSB power-up	15 May 2019	23+	26+	29+

Maesteg
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Pontypridd
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Aberdare
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD	SDN	ARQ A	ARQ B
		N	N	N	N	N	N
New baseline	02 Oct 2013	24-	21+	27-	25+	22+	28+

Merthyr Tydfil
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Bargoed
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27

Rhymney
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB channel change	15 May 2019	40	43	46

South Tredegar
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	42	45
PSB power-up	19 Jun 2019	39	42	45

Clydach
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23	29	26
PSB channel change	15 May 2019	23	30	26

Abertillery
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Ebbw Vale
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50
PSB channel change	19 Jun 2019	30	31	37

Blaina
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	40	46

Pontypool
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD	SDN	ARQ A	ARQ B
		N	N	N	N	N	N
New baseline	02 Oct 2013	23+	26+	29+	25-	22-	28-

Blaenavon
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB channel change	15 May 2019	40	43	46

Abergavenny
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39+	42	45

Ferndale
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB channel change	15 May 2019	33	36	48

Porth
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	46	40

Wattsville
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB channel change	15 May 2019	30	31	37

Llangeinor
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50
PSB channel change	19 Jun 2019	40	43	46

Treharris
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	52	48	56
PSB channel change	15 May 2019	40	43	46

Cwmafon
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27
PSB channel change	15 May 2019	32	34	35

Llyswen
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	27	21+
PSB mux offset introduction	15 May 2019	24	27	21

Llanhilleth
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	42	45

Gilfach
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27

Taffs Well
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50
PSB channel change	15 May 2019	40	43	46

Ogmore Vale
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB channel change	15 May 2019	33	36	48

Abertridwr
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB channel change	19 Jun 2019	40	43	46

Ynysowen
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50
PSB channel change	19 Jun 2019	33	36	48

Ebbw Vale South
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	27	21+
PSB mux offset introduction	19 Jun 2019	24	27	21

Nant y Moel
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	21+	24
PSB mux offset introduction	15 May 2019	27	21	24

Tonypandy
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50
PSB channel change	15 May 2019	33	36	48

Aberbeeg
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	50	46
PSB channel change	15 May 2019	43	40	46

Fernhill
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50

Penrhiwceiber
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	53	57	60

Risca
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	46	40
PSB power-up	15 May 2019	43	46	40

Trebanog
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	27	21+

Mynydd Bach
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	15 May 2019	32	34	35

Bedlinog
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27

Machen Upper
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	50	55	59
PSB channel change	15 May 2019	40	43	46

Cwm Ffrwd Oer
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	46	50
PSB channel change	15 May 2019	30	31	37

Blaenau Gwent
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB channel change	15 May 2019	33	36	48

Pennar
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	46	40

Brecon
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	54	58
PSB channel change	15 May 2019	32	34	35

Sennybridge
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	50	46
PSB channel change	15 May 2019	43	40	46

Clyro
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	41+	47	44
PSB mux offset introduction	15 May 2019	41	47	44

Crickhowell
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27

Blackmill
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Llanfach
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB channel change	15 May 2019	32	34	35

Pennorth
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23	29	26

Deri
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Cwmaman
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	42	45

Upper Killay
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27
PSB channel change	19 Jun 2019	30	31	37

Ton Pentre
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	15 May 2019	32	34	35

Trecastle
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Blaenllechau
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27

Monmouth
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50
PSB channel change	05 Mar 2018	59	30	50
PSB channel change	19 Jun 2019	31	30	37

Usk
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	48	52	56

Cwmfelinfach
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	48	52	56
PSB channel change	15 May 2019	40	43	46

Llanfoist
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	53	57
PSB channel change	15 May 2019	29	31	37

Nantyglo
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB channel change	15 May 2019	33	36	48

Abercynon
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	58	54	49
PSB channel change	15 May 2019	32	34	35

Tynewydd
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	50	55
PSB channel change	15 May 2019	40	43	46

Dowlais
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	15 May 2019	32	34	35

Rhondda Fach
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Trefechan
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	42	39	45
PSB channel change	15 May 2019	40	43	46

Crucorney
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	27	21+
PSB mux offset introduction	15 May 2019	24	27	21

Tonyrefail
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50
PSB channel change	15 May 2019	40	43	46

Llanharan
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27

Rhondda HP
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23	26	29

Gellifendigaid
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50
PSB channel change	15 May 2019	40	43	46

South Maesteg
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50
PSB channel change	15 May 2019	33	36	48

Van Terrace
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	45	42
PSB channel change	15 May 2019	40	43	46

Crumlin
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB mux channel change and power increase	19 Jun 2019	30	31	37

Chepstow
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27

Kilvey Hill
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD	SDN	ARQ A	ARQ B	L-SWA
		N	N	N	N	N	N	N
New baseline	02 Oct 2013	23	26	29	25	22	28
Multiplex launch. Retune may provide additional services.	05 Jul 2016	23	26	29	25	22	28	30
COM channel change	15 May 2019	23	26	29	25	22	28	34
PSB channel change	17 Jul 2019	21	24	27	25	22	28	34

Kilvey Hill has 12 relay transmitters

Relay transmitters

Cilfrew
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	45	42
PSB channel change	19 Jun 2019	33	36	48

Alltwen
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	46	40

Pontardawe
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	17 Jul 2019	33	36	48

Craig Cefn Parc
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	46	40

Briton Ferry
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	46	40

Efail Fach
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	45	42

Burry Port
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	17 Jul 2019	29	31	37

Neath Abbey HP
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	52	48	56
PSB channel change	19 Jun 2019	39	42	45

Neath Abbey VP
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	52	48	56
PSB channel change	19 Jun 2019	39	42	45

Mynydd Emroch
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	46	40

Rheola
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
PSB channel change	17 Oct 2018	59	31	37
PSB channel change	15 May 2019	30	31	37

Fernhill
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
PSB channel change	15 May 2019	40	43	46

Fernhill has 3 relay transmitters

Relay transmitters

Penrhiwceiber
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
PSB channel change	15 May 2019	33	36	48

Cwmaman
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
PSB channel change	15 May 2019	39	42	45

Usk
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
PSB channel change	15 May 2019	40	43	46

Usk has 1 relay transmitters

Llanddona
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD	SDN	ARQ A	ARQ B
		N	N	N	N	N	N
New baseline	02 Oct 2013	57	60-	53	43	46	40
PSB channel change	14 Nov 2018	40	43	46	41	44	47

Llanddona has 25 relay transmitters

Relay transmitters

Betws y Coed
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	24	21+
PSB channel change	14 Nov 2018	22	25	28

Conway
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	47	41+	44
PSB channel change	14 Nov 2018	33	36	48

Bethesda
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	57	60-	53
PSB channel change	14 Nov 2018	39	42	45

Deiniolen
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	22	25	28
PSB mux channel change and power increase	14 Nov 2018	22	25	28

Arfon
Step A change or event in the switchover programme	Date		BBC A	D3&4	BBC B HD
		N	N	N	N
New baseline	02 Oct 2013	41+	44	47
Station closes	14 Nov 2018		41+	44	47

Llandecwyn
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	14 Nov 2018	32	34	35

Ffestiniog
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Waunfawr
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	28	22
PSB mux channel change and power increase	14 Nov 2018	25	28	22

Amlwch
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	22	25	28
PSB mux channel change and power increase	14 Nov 2018	22	25	28

Cemaes
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	45	49	42
PSB mux channel change and power increase	14 Nov 2018	32	34	35

Mochdre
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	26	23	29
PSB channel change	14 Nov 2018	26	23	30

Dolwyddelan
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	44	41+	47
PSB channel change	14 Nov 2018	32	34	35

Caergybi
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	21+	24	27

Llanengan
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	14 Nov 2018	29	31	37

Maentwrog
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	40	46

Coed Derw
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	40	46

Trefor B
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	45	49	42
PSB mux channel change and power increase	14 Nov 2018	32	34	35

Gronant
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	26	29	23
PSB channel change	14 Nov 2018	26	30	23

Caernarfon
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	27	21+

Bethesda North
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	25	22
PSB mux channel change and power increase	14 Nov 2018	28	25	22

Morfa Nefyn
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	28	22

Prestatyn
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	22	25	28
PSB mux channel change and power increase	14 Nov 2018	22	25	28

Arfon South
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
PSB channel change	14 Nov 2018	41+	44	47

Arfon North
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
PSB mux channel change and power increase	14 Nov 2018	29	31	37

CARMEL
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD	SDN	ARQ A	ARQ B
		N	N	N	N	N	N
New baseline	02 Oct 2013	60-	53	57	54	58	49
PSB channel change	17 Jul 2019	23	26	29	33	36	48

CARMEL has 19 relay transmitters

Relay transmitters

Llanelli
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	45	42

Ystalyfera
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	42	45

Llandrindod Wells
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39+	42	45

Cwm Twrch
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27
PSB channel change	17 Jul 2019	32	34	35

Rhayader
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23	29	26
PSB mux channel change and power increase	17 Jul 2019	23	30	26

Llanwrtyd Wells
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27
PSB power-up	17 Jul 2019	24	21+	27

Builth Wells
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Tenby
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	56-	48	52-
PSB mux channel change and power increase	17 Jul 2019	32	34	35

Cwmgors
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	27	21+
PSB channel change	17 Jul 2019	30	31	37

Abercraf
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	28	22

Erwood
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	53	57
PSB channel change	17 Jul 2019	30	31	37

Greenhill
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	27	21+
PSB channel change	17 Jul 2019	30	31	37

Penderyn
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	42	45
PSB channel change	17 Jul 2019	40	43	46

Brechfa
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	24	21+

Talley
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	42	45

Llansawel
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	25	22

Bronwydd Arms
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	24	21+
PSB channel change	17 Jul 2019	32	34	35

Cilycwm
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	24	21+
PSB mux offset introduction	17 Jul 2019	27	24	21

Brechfa
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
PSB mux offset introduction	17 Jul 2019	27	24	21

Brechfa has 29 relay transmitters

Relay transmitters

Preseli
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD	SDN	ARQ A	ARQ B
		N	N	N	N	N	N
New baseline	02 Oct 2013	43+	46+	40+	42-	45-	39+

Mynydd Pencarreg
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	31 Oct 2018	41	44	47

Tregaron
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	55	50	59
PSB channel change	17 Oct 2018	32	34	35

Llandyfriog
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

St Dogmaels
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23	26	29
PSB channel change	17 Oct 2018	30	31	37

Llangranog
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Trefin
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Abergwynfi
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27
PSB channel change	17 Oct 2018	23	26	30

Glyncorrwg
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	45	42

Llwyn Onn
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28
PSB mux channel change and power increase	17 Oct 2018	25	22	28

Dolgellau
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50
PSB channel change	17 Oct 2018	41	44	47

Croeserw
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	17 Oct 2018	32	34	35

Pencader
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23	26	29
PSB channel change	17 Oct 2018	30	31	37

Llandysul
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB channel change	17 Oct 2018	32	34	35

Broad Haven
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	51	58	54
PSB channel change	17 Oct 2018	41	44	47

Rheola
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50

Newport Bay
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	47+	41+	44+
PSB mux channel change and power increase	17 Oct 2018	47+	41+	44+

Haverfordwest
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	56	52	47
PSB channel change	17 Oct 2018	33	36	48

Ferryside
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD	SDN
		N	N	N	N
New baseline	02 Oct 2013	21+	30-	24	27
PSB mux channel change and power increase	17 Oct 2018	21	27	24	28

St Davids
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23	26	29

Llangybi
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Duffryn
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Cynwyl Elfed
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Pembroke Dock
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	17 Oct 2018	33	36	48

Bronnant
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23	29	26
PSB channel change	17 Oct 2018	30	31	37

Croeserw HP
Step A change or event in the switchover programme	Date		BBC A	D3&4	BBC B HD
		N	N	N	N
New baseline	02 Oct 2013	49	58	54
Station closes	17 Oct 2018		49	58	54

Fishguard
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	17 Oct 2018	32	34	35

Ystumtuen
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	45-	42-

Blaenplwyf
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD	SDN	ARQ A	ARQ B
		N	N	N	N	N	N
New baseline	02 Oct 2013	27	24	21+	25	22	28

Blaenplwyf has 13 relay transmitters

Relay transmitters

Machynlleth
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	57	60	53
PSB channel change	31 Oct 2018	32	34	35

Aberystwyth
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	58	49	54
PSB channel change	31 Oct 2018	41	44	47

Penrhyn Coch
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	50	59	55
PSB channel change	31 Oct 2018	32	34	35

Dolybont
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	57	60	53
PSB channel change	31 Oct 2018	39	42	45

Afon Dyfi
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	22	25	28

Trefilan
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	57	60	53
PSB channel change	31 Oct 2018	32	34	35

Bow Street
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	44	41+	47
PSB channel change	31 Oct 2018	40	43	46

Ynys Pennal
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	44	41+	47
PSB channel change	31 Oct 2018	33	36	48

Corris
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	45	49	42
PSB channel change	31 Oct 2018	45	39	42

Cwrtnewydd
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	44	41+	47
PSB channel change	31 Oct 2018	32	34	35

Beddgelert Link
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	24	21+

Beddgelert
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	50	59	55
PSB channel change	31 Oct 2018	39	42	45

Long Mountain
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60-	53	57
PSB channel change	31 Oct 2018	33	36	48

Long Mountain has 15 relay transmitters

Relay transmitters

Llandinam
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	41+	47	44

Llanidloes
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	28	22

Llanfyllin
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	25	22

Moel y Sant
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	24	21+

Kerry
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	24	21+

Carno
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	27	21+

Llanbrynmair
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	28	22

Llangurig UHF
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23	29	26

Llanrhaeadr ym Mochnant
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	45	49	42
PSB channel change	31 Oct 2018	45	39	42
PSB power-up	22 Nov 2019	45	39	42
PSB power-up	29 Nov 2019	45	39	42

Broneirion
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	29	23	26
PSB channel change	31 Oct 2018	30	23	26

Llangadfan
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	25	22

Tregynon
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	25	22

Castle Caereinion
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	46	43	50
PSB channel change	31 Oct 2018	46	43	40

Llangynog
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	50	55	59
PSB channel change	31 Oct 2018	32	34	35

Penmaen Rhos
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	25	22

Penmaen Rhos has 21 relay transmitters

Relay transmitters

Moel y Parc
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD	SDN	ARQ A	ARQ B	COM7 HD	COM8 HD	L-MLD
		N	N	N	N	N	N	N	N	N
New baseline	02 Oct 2013	45	39+	42	51-	52+	48-
Multiplex launch	28 May 2014	45	39+	42	51-	52+	48-	32
Multiplex launch	25 Jun 2015	45	39+	42	51-	52+	48-	32	34
Multiplex launch. Retune may provide additional services.	07 Feb 2017	45	39+	42	51-	52+	48-	32	34	56
COM channel change	27 Feb 2019	45	39+	42	51-	36	48-	55	34	27
COM mux FEC change	10 Feb 2020	45	39+	42	51-	36	48-	55	34	27
Multiplex closes	30 Jun 2020	45	39+	42	51-	36	48-	55		27
COM channel change	12 Aug 2020	45	39+	42	33	36	48-	55		27

Llangollen
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	58	49	54
PSB channel change	27 Feb 2019	32	34	35

Glyn Ceiriog
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	58	49	54
PSB channel change	27 Feb 2019	32	34	35

Bala
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	26	23	29
PSB channel change	27 Feb 2019	26	23	30

Corwen
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	25	22

Pontfadog
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	25	22

Cerrig y Drudion
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	26	23	29
PSB channel change	27 Feb 2019	26	23	30

Wrexham Rhos
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	22	25

Storeton Wales
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	57	53	60-
PSB mux channel change and power increase	27 Feb 2019	45	39+	42

Llanuwchllyn
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	46	43	40

Cefn Mawr
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	57	53	60
PSB channel change	27 Feb 2019	33	36	48

Llanarmon yn Ial
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	24	21+
PSB channel change	27 Feb 2019	23	26	30

Llangernyw
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	22	25

Betws yn Rhos
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	24	21+

Glyndyfrdwy
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	50	59	55
PSB channel change	27 Feb 2019	29	31	37

Llandderfel
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	50	55	59
PSB channel change	27 Feb 2019	32	34	35

Llanddulas
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	26	23	29
PSB channel change	27 Feb 2019	26	23	30

Pwll Glas
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	26	23	29
PSB channel change	27 Feb 2019	26	23	30

Pen y Banc
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	24	21+
PSB mux channel change and power increase	27 Feb 2019	29	31	37

Cyffylliog
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	25	22

Wenvoe
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD	SDN	ARQ A	ARQ B	COM7 HD	COM8 HD	L-CDF
		N	N	N	N	N	N	N	N	N
New baseline	02 Oct 2013	41+	44	47	42+	45	39+
Multiplex launch	10 Dec 2013	41+	44	47	42+	45	39+	31
Multiplex launch. Retune may provide additional services.	10 Feb 2014	41+	44	47	42+	45	39+	31	51
Multiplex launch	14 May 2015	41+	44	47	42+	45	39+	31	37	51
COM channel change and power-up	15 May 2019	41+	44	47	42+	45	39+	31	56	37
COM channel change	19 Jun 2019	41+	44	47	42+	45	39+	55	56	37
COM mux FEC change	10 Feb 2020	41+	44	47	42+	45	39+	55	56	37
Multiplex closes	30 Jun 2020	41+	44	47	42+	45	39+	55		37

Wenvoe has 76 relay transmitters

Relay transmitters

Rhondda VP
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23	26	29

Mynydd Machen
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23+	26+	29+
PSB power-up	15 May 2019	23+	26+	29+

Maesteg
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Pontypridd
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Aberdare
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD	SDN	ARQ A	ARQ B
		N	N	N	N	N	N
New baseline	02 Oct 2013	24-	21+	27-	25+	22+	28+

Merthyr Tydfil
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Bargoed
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27

Rhymney
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB channel change	15 May 2019	40	43	46

South Tredegar
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	42	45
PSB power-up	19 Jun 2019	39	42	45

Clydach
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23	29	26
PSB channel change	15 May 2019	23	30	26

Abertillery
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Ebbw Vale
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50
PSB channel change	19 Jun 2019	30	31	37

Blaina
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	40	46

Pontypool
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD	SDN	ARQ A	ARQ B
		N	N	N	N	N	N
New baseline	02 Oct 2013	23+	26+	29+	25-	22-	28-

Blaenavon
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB channel change	15 May 2019	40	43	46

Abergavenny
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39+	42	45

Ferndale
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB channel change	15 May 2019	33	36	48

Porth
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	46	40

Wattsville
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB channel change	15 May 2019	30	31	37

Llangeinor
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50
PSB channel change	19 Jun 2019	40	43	46

Treharris
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	52	48	56
PSB channel change	15 May 2019	40	43	46

Cwmafon
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27
PSB channel change	15 May 2019	32	34	35

Llyswen
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	27	21+
PSB mux offset introduction	15 May 2019	24	27	21

Llanhilleth
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	42	45

Gilfach
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27

Taffs Well
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50
PSB channel change	15 May 2019	40	43	46

Ogmore Vale
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB channel change	15 May 2019	33	36	48

Abertridwr
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB channel change	19 Jun 2019	40	43	46

Ynysowen
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50
PSB channel change	19 Jun 2019	33	36	48

Ebbw Vale South
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	27	21+
PSB mux offset introduction	19 Jun 2019	24	27	21

Nant y Moel
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	21+	24
PSB mux offset introduction	15 May 2019	27	21	24

Tonypandy
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50
PSB channel change	15 May 2019	33	36	48

Aberbeeg
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	50	46
PSB channel change	15 May 2019	43	40	46

Fernhill
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50

Penrhiwceiber
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	53	57	60

Risca
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	46	40
PSB power-up	15 May 2019	43	46	40

Trebanog
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	27	21+

Mynydd Bach
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	15 May 2019	32	34	35

Bedlinog
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27

Machen Upper
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	50	55	59
PSB channel change	15 May 2019	40	43	46

Cwm Ffrwd Oer
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	46	50
PSB channel change	15 May 2019	30	31	37

Blaenau Gwent
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB channel change	15 May 2019	33	36	48

Pennar
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	46	40

Brecon
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	54	58
PSB channel change	15 May 2019	32	34	35

Sennybridge
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	50	46
PSB channel change	15 May 2019	43	40	46

Clyro
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	41+	47	44
PSB mux offset introduction	15 May 2019	41	47	44

Crickhowell
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27

Blackmill
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Llanfach
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB channel change	15 May 2019	32	34	35

Pennorth
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23	29	26

Deri
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Cwmaman
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	42	45

Upper Killay
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27
PSB channel change	19 Jun 2019	30	31	37

Ton Pentre
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	15 May 2019	32	34	35

Trecastle
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Blaenllechau
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27

Monmouth
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50
PSB channel change	05 Mar 2018	59	30	50
PSB channel change	19 Jun 2019	31	30	37

Usk
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	48	52	56

Cwmfelinfach
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	48	52	56
PSB channel change	15 May 2019	40	43	46

Llanfoist
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	53	57
PSB channel change	15 May 2019	29	31	37

Nantyglo
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB channel change	15 May 2019	33	36	48

Abercynon
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	58	54	49
PSB channel change	15 May 2019	32	34	35

Tynewydd
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	50	55
PSB channel change	15 May 2019	40	43	46

Dowlais
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	15 May 2019	32	34	35

Rhondda Fach
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Trefechan
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	42	39	45
PSB channel change	15 May 2019	40	43	46

Crucorney
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	27	21+
PSB mux offset introduction	15 May 2019	24	27	21

Tonyrefail
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50
PSB channel change	15 May 2019	40	43	46

Llanharan
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27

Rhondda HP
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23	26	29

Gellifendigaid
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50
PSB channel change	15 May 2019	40	43	46

South Maesteg
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50
PSB channel change	15 May 2019	33	36	48

Van Terrace
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	45	42
PSB channel change	15 May 2019	40	43	46

Crumlin
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB mux channel change and power increase	19 Jun 2019	30	31	37

Chepstow
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27

Kilvey Hill
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD	SDN	ARQ A	ARQ B	L-SWA
		N	N	N	N	N	N	N
New baseline	02 Oct 2013	23	26	29	25	22	28
Multiplex launch. Retune may provide additional services.	05 Jul 2016	23	26	29	25	22	28	30
COM channel change	15 May 2019	23	26	29	25	22	28	34
PSB channel change	17 Jul 2019	21	24	27	25	22	28	34

Kilvey Hill has 12 relay transmitters

Relay transmitters

Cilfrew
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	45	42
PSB channel change	19 Jun 2019	33	36	48

Alltwen
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	46	40

Pontardawe
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	17 Jul 2019	33	36	48

Craig Cefn Parc
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	46	40

Briton Ferry
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	46	40

Efail Fach
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	45	42

Burry Port
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	17 Jul 2019	29	31	37

Neath Abbey HP
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	52	48	56
PSB channel change	19 Jun 2019	39	42	45

Neath Abbey VP
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	52	48	56
PSB channel change	19 Jun 2019	39	42	45

Mynydd Emroch
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	46	40

Rheola
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
PSB channel change	17 Oct 2018	59	31	37
PSB channel change	15 May 2019	30	31	37

Fernhill
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
PSB channel change	15 May 2019	40	43	46

Fernhill has 3 relay transmitters

Relay transmitters

Penrhiwceiber
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
PSB channel change	15 May 2019	33	36	48

Cwmaman
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
PSB channel change	15 May 2019	39	42	45

Usk
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
PSB channel change	15 May 2019	40	43	46

Usk has 1 relay transmitters

Llanddona
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD	SDN	ARQ A	ARQ B
		N	N	N	N	N	N
New baseline	02 Oct 2013	57	60-	53	43	46	40
PSB channel change	14 Nov 2018	40	43	46	41	44	47

Llanddona has 25 relay transmitters

Relay transmitters

Betws y Coed
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	24	21+
PSB channel change	14 Nov 2018	22	25	28

Conway
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	47	41+	44
PSB channel change	14 Nov 2018	33	36	48

Bethesda
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	57	60-	53
PSB channel change	14 Nov 2018	39	42	45

Deiniolen
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	22	25	28
PSB mux channel change and power increase	14 Nov 2018	22	25	28

Arfon
Step A change or event in the switchover programme	Date		BBC A	D3&4	BBC B HD
		N	N	N	N
New baseline	02 Oct 2013	41+	44	47
Station closes	14 Nov 2018		41+	44	47

Llandecwyn
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	14 Nov 2018	32	34	35

Ffestiniog
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Waunfawr
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	28	22
PSB mux channel change and power increase	14 Nov 2018	25	28	22

Amlwch
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	22	25	28
PSB mux channel change and power increase	14 Nov 2018	22	25	28

Cemaes
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	45	49	42
PSB mux channel change and power increase	14 Nov 2018	32	34	35

Mochdre
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	26	23	29
PSB channel change	14 Nov 2018	26	23	30

Dolwyddelan
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	44	41+	47
PSB channel change	14 Nov 2018	32	34	35

Caergybi
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	21+	24	27

Llanengan
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	14 Nov 2018	29	31	37

Maentwrog
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	40	46

Coed Derw
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	43	40	46

Trefor B
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	45	49	42
PSB mux channel change and power increase	14 Nov 2018	32	34	35

Gronant
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	26	29	23
PSB channel change	14 Nov 2018	26	30	23

Caernarfon
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	27	21+

Bethesda North
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	25	22
PSB mux channel change and power increase	14 Nov 2018	28	25	22

Morfa Nefyn
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	28	22

Prestatyn
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	22	25	28
PSB mux channel change and power increase	14 Nov 2018	22	25	28

Arfon South
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
PSB channel change	14 Nov 2018	41+	44	47

Arfon North
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
PSB mux channel change and power increase	14 Nov 2018	29	31	37

CARMEL
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD	SDN	ARQ A	ARQ B
		N	N	N	N	N	N
New baseline	02 Oct 2013	60-	53	57	54	58	49
PSB channel change	17 Jul 2019	23	26	29	33	36	48

CARMEL has 19 relay transmitters

Relay transmitters

Llanelli
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	45	42

Ystalyfera
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	42	45

Llandrindod Wells
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39+	42	45

Cwm Twrch
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27
PSB channel change	17 Jul 2019	32	34	35

Rhayader
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23	29	26
PSB mux channel change and power increase	17 Jul 2019	23	30	26

Llanwrtyd Wells
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27
PSB power-up	17 Jul 2019	24	21+	27

Builth Wells
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Tenby
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	56-	48	52-
PSB mux channel change and power increase	17 Jul 2019	32	34	35

Cwmgors
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	27	21+
PSB channel change	17 Jul 2019	30	31	37

Abercraf
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	28	22

Erwood
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	53	57
PSB channel change	17 Jul 2019	30	31	37

Greenhill
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	27	21+
PSB channel change	17 Jul 2019	30	31	37

Penderyn
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	42	45
PSB channel change	17 Jul 2019	40	43	46

Brechfa
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	24	21+

Talley
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	42	45

Llansawel
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	25	22

Bronwydd Arms
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	24	21+
PSB channel change	17 Jul 2019	32	34	35

Cilycwm
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	24	21+
PSB mux offset introduction	17 Jul 2019	27	24	21

Brechfa
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
PSB mux offset introduction	17 Jul 2019	27	24	21

Brechfa has 29 relay transmitters

Relay transmitters

Preseli
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD	SDN	ARQ A	ARQ B
		N	N	N	N	N	N
New baseline	02 Oct 2013	43+	46+	40+	42-	45-	39+

Mynydd Pencarreg
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	31 Oct 2018	41	44	47

Tregaron
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	55	50	59
PSB channel change	17 Oct 2018	32	34	35

Llandyfriog
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

St Dogmaels
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23	26	29
PSB channel change	17 Oct 2018	30	31	37

Llangranog
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Trefin
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Abergwynfi
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	21+	27
PSB channel change	17 Oct 2018	23	26	30

Glyncorrwg
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	45	42

Llwyn Onn
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28
PSB mux channel change and power increase	17 Oct 2018	25	22	28

Dolgellau
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50
PSB channel change	17 Oct 2018	41	44	47

Croeserw
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	17 Oct 2018	32	34	35

Pencader
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23	26	29
PSB channel change	17 Oct 2018	30	31	37

Llandysul
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60	57	53
PSB channel change	17 Oct 2018	32	34	35

Broad Haven
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	51	58	54
PSB channel change	17 Oct 2018	41	44	47

Rheola
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	59	55	50

Newport Bay
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	47+	41+	44+
PSB mux channel change and power increase	17 Oct 2018	47+	41+	44+

Haverfordwest
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	56	52	47
PSB channel change	17 Oct 2018	33	36	48

Ferryside
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD	SDN
		N	N	N	N
New baseline	02 Oct 2013	21+	30-	24	27
PSB mux channel change and power increase	17 Oct 2018	21	27	24	28

St Davids
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23	26	29

Llangybi
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Duffryn
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Cynwyl Elfed
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	22	28

Pembroke Dock
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	17 Oct 2018	33	36	48

Bronnant
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23	29	26
PSB channel change	17 Oct 2018	30	31	37

Croeserw HP
Step A change or event in the switchover programme	Date		BBC A	D3&4	BBC B HD
		N	N	N	N
New baseline	02 Oct 2013	49	58	54
Station closes	17 Oct 2018		49	58	54

Fishguard
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	49	58	54
PSB channel change	17 Oct 2018	32	34	35

Ystumtuen
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	39	45-	42-

Blaenplwyf
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD	SDN	ARQ A	ARQ B
		N	N	N	N	N	N
New baseline	02 Oct 2013	27	24	21+	25	22	28

Blaenplwyf has 13 relay transmitters

Relay transmitters

Machynlleth
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	57	60	53
PSB channel change	31 Oct 2018	32	34	35

Aberystwyth
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	58	49	54
PSB channel change	31 Oct 2018	41	44	47

Penrhyn Coch
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	50	59	55
PSB channel change	31 Oct 2018	32	34	35

Dolybont
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	57	60	53
PSB channel change	31 Oct 2018	39	42	45

Afon Dyfi
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	22	25	28

Trefilan
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	57	60	53
PSB channel change	31 Oct 2018	32	34	35

Bow Street
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	44	41+	47
PSB channel change	31 Oct 2018	40	43	46

Ynys Pennal
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	44	41+	47
PSB channel change	31 Oct 2018	33	36	48

Corris
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	45	49	42
PSB channel change	31 Oct 2018	45	39	42

Cwrtnewydd
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	44	41+	47
PSB channel change	31 Oct 2018	32	34	35

Beddgelert Link
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	24	21+

Beddgelert
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	50	59	55
PSB channel change	31 Oct 2018	39	42	45

Long Mountain
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	60-	53	57
PSB channel change	31 Oct 2018	33	36	48

Long Mountain has 15 relay transmitters

Relay transmitters

Llandinam
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	41+	47	44

Llanidloes
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	28	22

Llanfyllin
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	25	22

Moel y Sant
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	24	21+

Kerry
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	24	21+

Carno
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	24	27	21+

Llanbrynmair
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	25	28	22

Llangurig UHF
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	23	29	26

Llanrhaeadr ym Mochnant
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	45	49	42
PSB channel change	31 Oct 2018	45	39	42
PSB power-up	22 Nov 2019	45	39	42
PSB power-up	29 Nov 2019	45	39	42

Broneirion
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	29	23	26
PSB channel change	31 Oct 2018	30	23	26

Llangadfan
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	25	22

Tregynon
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	25	22

Castle Caereinion
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	46	43	50
PSB channel change	31 Oct 2018	46	43	40

Llangynog
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	50	55	59
PSB channel change	31 Oct 2018	32	34	35

Penmaen Rhos
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	25	22

Penmaen Rhos has 21 relay transmitters

Relay transmitters

Moel y Parc
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD	SDN	ARQ A	ARQ B	COM7 HD	COM8 HD	L-MLD
		N	N	N	N	N	N	N	N	N
New baseline	02 Oct 2013	45	39+	42	51-	52+	48-
Multiplex launch	28 May 2014	45	39+	42	51-	52+	48-	32
Multiplex launch	25 Jun 2015	45	39+	42	51-	52+	48-	32	34
Multiplex launch. Retune may provide additional services.	07 Feb 2017	45	39+	42	51-	52+	48-	32	34	56
COM channel change	27 Feb 2019	45	39+	42	51-	36	48-	55	34	27
COM mux FEC change	10 Feb 2020	45	39+	42	51-	36	48-	55	34	27
Multiplex closes	30 Jun 2020	45	39+	42	51-	36	48-	55		27
COM channel change	12 Aug 2020	45	39+	42	33	36	48-	55		27

Llangollen
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	58	49	54
PSB channel change	27 Feb 2019	32	34	35

Glyn Ceiriog
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	58	49	54
PSB channel change	27 Feb 2019	32	34	35

Bala
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	26	23	29
PSB channel change	27 Feb 2019	26	23	30

Corwen
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	25	22

Pontfadog
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	25	22

Cerrig y Drudion
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	26	23	29
PSB channel change	27 Feb 2019	26	23	30

Wrexham Rhos
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	22	25

Storeton Wales
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	57	53	60-
PSB mux channel change and power increase	27 Feb 2019	45	39+	42

Llanuwchllyn
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	46	43	40

Cefn Mawr
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	57	53	60
PSB channel change	27 Feb 2019	33	36	48

Llanarmon yn Ial
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	24	21+
PSB channel change	27 Feb 2019	23	26	30

Llangernyw
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	22	25

Betws yn Rhos
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	24	21+

Glyndyfrdwy
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	50	59	55
PSB channel change	27 Feb 2019	29	31	37

Llandderfel
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	50	55	59
PSB channel change	27 Feb 2019	32	34	35

Llanddulas
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	26	23	29
PSB channel change	27 Feb 2019	26	23	30

Pwll Glas
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	26	23	29
PSB channel change	27 Feb 2019	26	23	30

Pen y Banc
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	27	24	21+
PSB mux channel change and power increase	27 Feb 2019	29	31	37

Cyffylliog
Step A change or event in the switchover programme	Date	BBC A	D3&4	BBC B HD
		N	N	N
New baseline	02 Oct 2013	28	25	22

Wales Region Transmitters

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