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THE TRANSMISSION GALLERY

Mynydd Machen Caerphilly
NGR: ST223900 Maps: Google  Bing (Ord Surv) Site Height: 362.7m Structure Height: 45.72m
Digital TV: BBC A: 23 D3&4: 26 BBC B: 29
BBC Radio:
 
Ind. National Radio:
Ind. Local Radio:
Digital Radio: BBC National: 12B        South East Wales: 12C       
Comments: Mynydd Machen was formerly a relay of Wenvoe and forms a Single Frequency Network with Pontypool. It is now line fed.

Mynydd Machen is a high power relay of Wenvoe, serving the areas along the valley at the bottom end of Ebbw Vale, including Risca and Abercarn, plus areas of the Rhymney Valley including Bedwas, Trethomas and parts of Caerphilly. The station is named after the mountain on which it stands, Mynydd Machen (Machen Mountain). The site is very well elevated at 360m AOD, which makes it rather difficult to get to, but affords spectacular views once the effort to do so has been expended!

The mountain is quite wide, with a fairly flat top and steep valleys on all sides. This means that despite the elevation and power of the station, many areas at the bottom of the valleys remain shielded from the transmitter. Therefore several low power relays have been built, including Wattsville and Machen upper, which are both less than a kilometre away but halfway down the mountain and therefore able to "see" the bottom of the valley. Risca also fulfills the same function, although it is located on the opposite side of the valley near the bottom.

The RBL antennas are two horizontal troughs, both pointing at Wenvoe, which can be clearly seen from the summit.

By coincidence no less than three contributors have visited this site within a very short space of time - I'm surprised they didn't all bump into each other! In view of the effort each of them has expended to get up there and the quality of all their photos I'm happy to present the best shots from all three of their visits!


Photos by
Rory Clark


Photos by
Anthony Salmon

Photos by
Robert Whittaker

Photos by
Tony Curley

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