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THE TRANSMISSION GALLERY

Photos by Peter Bigwood
Text by David Sommers

Clyro Powys
NGR: SO204432 Maps: Google  Bing (Ord Surv) Site Height: 214.9m Structure Height: 45m
Digital TV: BBC A: 41 D3&4: 47 BBC B: 44
BBC Radio: Radio 1: 99.8 Radio 2: 88.1 Radio 3: 90.2 Radio 4: 104.9
  Radio Cymru: 92.4 
Ind. National Radio:
Ind. Local Radio:
Digital Radio: BBC National: 12B       
Comments: Clyro is a TV relay of Wenvoe (via Ebbw Vale, Abergavenny and Brecon UHF) and an FM relay of Wenvoe (via Llandrindod Wells and Llyswen)

The Clyro mast overlooks the friendly border town of Hay-on Wye, best known for its book shops.

Whilst Clyro is a relay Wenvoe, it does so via the chain of Ebbw Vale, Abergavenny & then Brecon. Therefore being co-channel with its original parent station is not a disadvantage, because direct reception of Wenvoe is impossible at the relay station location. The twin installation of choice in this location was usually an MBM48A or XG21A receiving Ridge Hill with a masthead amplifier, diplexed with a smaller group B aimed at Clyro. Most residents of this “English” area were keener in having Ch4 and five from Ridge Hill than S4C, although in some locations Clyro is the only useable programme source. The extra cost of a diplexer and small group B aerial makes very little difference when you consider the cost of masting and brackets for an XG21A, amplifier and PSU, so twin installations are common.

Incidentally, at ground level around the site of the Clyro relay it is possible to receive Ridge Hill very well on an unamplified 18 element group A aerial. Ridge Hill would provide a much stronger signal source than Brecon at the relay, and some of the locals would be happier with English programming.


Ashbrook House in nearby Clyro village, the home in 1872 of the victorian diarist Francis Kilvert and, for twelve years a century later, the home to your photographer.

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