DIRECTORATE OF TELECOMMUNICATIONS
ANTENNAS AND SITES
EGLWYSILAN (SOUTH WALES CONSTABULARY)
page 1 of 1


Introduction
This gallery contains a collection of scanned photographs relating to a radio mast collapse at the South Wales Constabulary Eglwysilan site.

Gallery Viewer
Click on the desired photograph to see an enlarged image. Once in the viewer, use the navigation arrows to move between images.

Photograph Credits
Many thanks to Graham Dean for sending in the photographs and accompanying text.

The photographs were obtained from DTELS Site Management section on Ruddington's closure, but it is assumed that copyright belongs to South Wales Constabulary.

from Brian Walters (16/05/2007)
“Eglwysilan had a number of trials and mishaps as a D Tels remote hilltop site. Apart from being regularly cut off by snow, probably no longer a threat these days because of global warming, and the tower collapse of 1974, recounted by Graham Dean on this site.

I remember one evening in 1985, during the miner’s dispute when Paddy Kelly and I were called out by South Wales Police having lost comms from Eglwys. A quick check in the basement equipment room showed the downlinks were functional but there was no output from the Pye T300 main transmitters, and a remote bay change didn’t help either. Mid Glamorgan Fire Service were also experiencing difficulties from the site. There was nothing for it but a trip to the hilltop above Pontypridd in the trusty Landrover.

On arrival at the site, at first sight, nothing seemed out of place; however once we got into the equipment room, the first thing to greet us was the silence. Louder even than the gentle hum of mains transformers; no incoming link signals, no incoming main receiver signals; it was as if Eglwysilan was inside some kind of bubble, cut off from the outside world.

It wasn’t long before we located the problem(s). All the aerial feeders at the base of the receiver tower had been cut through; every single one of them; with an axe!

Now far be it for me to point a finger, but taking into account the turmoil of the period, the size then of the coal industry in the area and the hostility towards the police, all I can say was that this was an act of vandalism … vandals with Davy lamps!

Once the faults had been identified and everybody who needed to be were informed, the whole emergency recovery system was launched. Selective “borrowing” of aerials on the Tx tower not in use and temporary aerials mounted on the fence posts had the site was back on the air, albeit on emergency talk through within an hour or so, and working under floodlights D Tels aerial riggers had the site back in a sort of normal condition in about 12 hours.

The adjacent radio site owned by the Gas Board which also suffered a similar attack that day was still off the air after 36 hours.

This once again proved the commitment of Home Office D of Tels staff to their customers and to providing a rock solid service in an emergency. Unfortunately, to my knowledge, there are no photographs of this incident; we were all too busy putting everything back together again.”
Webmaster: many thanks for the update Brian

from Graham Dean (12/03/2006)

“These photographs were taken at the South Wales Constabulary site, Eglwysilan (also known as Twyn Howell). They show the Receive (Rx) tower that collapsed at 1439 hours on 8 January 1971 (or could be 1974 as the last numeral is not too clear on the cover page).

The reason for the collapse is not known but the weather looks fine with no snow or ice, bearing in mind the time of year. There could, of course, have been high winds at the time.

The Rx tower at any site normally has less antennas than the Transmit (Tx) tower (eg. a transceiver antenna will be installed on the Tx tower) but the Tx tower at this site does not look to have a great deal of equipment fitted to it so the Rx tower should have even less.

However, structural design specification, such as headload, is not known and the tower steelwork appears to be less substantial than current structures have.

It would be interesting to hear the reason if anyone out there knows”

Update from Andrew Woodthorpe (04/03/2007)
“The Eglwysilan mast collapse would have been 1974. I finished my four-year traineeship with Pye Telecom at the end of August 1973 whence I formally joined the Systems Installation Dept on 1st September although I had been working there for the previous six months.

One of the first field jobs that I went on - which I guess would have been late 1973 or early 1974 was to fit Mascot 70 at Mid Glamorgan Ambulance at Pontypridd, and the main site for that system was Eglwysilan.
 
If I remember correctly the equipment was on another mast at the site, possibly SWEB, as I recall going to the site one dark winter evening (a colleague was driving) and as we went round that very sharp bend and up the last bit of track we found the tower across the track.

I don't think we were the first to find it - the collapse would already have been known about elsewhere - but I do remember we had to pull off the job for the remainder of that week whilst the metalwork was removed.
Webmaster: many thanks for the update Andrew

Update from Lawrie Atkinson (19/11/2007)
After the Eglwysilan collapse a Directorate team comprising Ron Whitby (Senior Structural Engineer) and Dave Kathuria (Structural Engineer) undertook a structural review of all sites to check loading capacity ahead of the WARC changeover, including the requirement for accommodating turnstile and slot panel antennas, temporary working antennas and microwave dishes.
Webmaster: many thanks for the update Lawrie

This page is
HTML compliant

©2007 web design by
concisewebs4u