Editing Clarkstown radio transmitter (section)

==History==
Constructed in 1988 for the transmission of [[Atlantic 252]] on 252&nbsp;kHz, it used one {{convert|248|m|ft|adj=on}} high [[Guyed mast|guyed]] steel framework mast with triangular cross section, insulated from ground. The original transmitters were two 300 kilowatt Continental transmitters built by [[Varian Associates]] of [[Dallas]]. These were replaced in 2007 by a single 300 kilowatt [[Transradio]] TRAM 300L transmitter.<ref>{{citation|url=http://www.transradio.de/index.php?option=com_content&view=article&id=99%3Airland2007&catid=1%3Aaktuelle-nachrichten&Itemid=79&lang=en|title=DRM Long Wave Transmitter in Summerhill (Ireland)|access-date=22 September 2023|archive-date=5 December 2014|archive-url=https://web.archive.org/web/20141205133443/http://www.transradio.de/index.php?option=com_content&view=article&id=99%3Airland2007&catid=1%3Aaktuelle-nachrichten&Itemid=79&lang=en|url-status=bot: unknown}}</ref> The ground around the mast and the entire transmission site bed are lined with copper for conductivity. The site has an [[Geneva Frequency Plan of 1975|ITU-cleared]] transmission power of 500&nbsp;kW by day and 100&nbsp;kW at night but was later only capable of operating at 300&nbsp;kW by day and 100&nbsp;kW at night.

Atlantic 252 ceased operations on 2 January 2002 and sports radio station [[TEAMtalk 252]] briefly took over the frequency for a few months in 2002. The transmitter was later taken over by RTÉ Networks Limited (now [[2RN (RTÉ Networks)|2RN]]). It was used for the [[AM broadcasting|AM]] version of [[RTÉ Radio 1]] on 252&nbsp;kHz from 2004 to 2023, and was the sole source of [[RTÉ Radio 1]] on AM from 24 March 2008, when the [[medium wave]] [[Tullamore transmitter]] on 567&nbsp;kHz was taken off air.,<ref>{{cite news|url=http://www.independent.ie/national-news/anger-as-rte-to-switch-off-medium-wave-band-1269254.html|title=Anger as RTÉ to switch off medium wave band|first=Laura|last=Noonan|newspaper=[[Irish Independent]]|date=19 January 2008|accessdate=18 December 2010}}</ref> to 2023.

In 2007, the transmitter was carrying a [[Digital Radio Mondiale]] multiplex overnight, featuring Radio 1, [[RTÉ Digital Radio Sport]], [[RTÉ Digital Radio News]] and the [[WRN Broadcast|World Radio Network]], before reverting to AM transmission for the daytime. DRM tests since ceased, with AM transmissions operating full-time once again until closedown in 2023.

On 24 September 2014, RTÉ announced that broadcasting of RTÉ Radio 1 on 252&nbsp;kHz would cease on 27 October 2014,<ref>{{Cite web|url=http://www.rte.ie/about/en/press-office/press-releases/2014/0923/645685-rte-radio-1-moves-from-longwave-transmission/|title = About RTÉ| website=[[RTÉ.ie]] }}</ref>  however following representations from Irish listeners in the UK and others, that date was postponed.<ref>{{Cite web|url=https://www.irishpost.com/news/115190-2-115190|title = RTÉ Longwave 252 to stay until closure by June 2019 – with digital replacement planned}}</ref> On 31 March 2023, RTÉ announced that the longwave service would be discontinued on 14 April of that year.<ref>[https://www.rte.ie/news/2023/0331/1367393-long-wave/ RTÉ Radio 1 long wave 252 service to end next month] RTÉ News, 2023-03-31.</ref><ref>[https://www.rte.ie/eile/2021/0301/1200837-keep-listening/ Keep Listening - How to Listen to RTÉ's Radio Services]</ref> As planned, this did happen.

The mast was felled on Thursday 27 July 2023.<ref>{{Cite web |date=2023-07-27 |title=VIDEO: Going, going, gone!… Old Atlantic 252 mast in Moynalvey comes down |url=https://www.meathchronicle.ie/2023/07/27/video-going-going-gone-old-atlantic-252-mast-in-moynalvey-comes-down/?fbclid=IwAR34qawh2R-H2nBgkuy4HrdmH_KCsIHYxgBmUlSP6G5D8GWRCYuK34CX9V8_aem_AcS4-tHIjy6bkgDk_dpNfptj9Xk4w0e7-nuPysGk0DJrFksL-u7debHzXSJyiDzEVKw |access-date=2023-07-27 |website=Meath Chronicle |language=en-US}}</ref>