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communications proved successful, Devizes expanded again with the installation of
Britain's first short-wave maritime transmitter. Again the service proved successful and the GPO investigated the possibility of expanding the Devizes site again; however, the limited space on the site led the company
472:
were granted planning permission for the siting of a mobile prefabricated building, fuel storage, 3 satellite dishes and a developed path from the main road. The plans show this was to be built around the masts operated by the police. However the MoD's present involvement on the site is unknown.
421:
and the
Marconi Company agreed to convert the receiving station into Britain's first long-range maritime communications station. The station opened in 1920 with the callsign 'GKT' and was equipped with a six-kilowatt valve transmitter and a receiver, guaranteeing a two-way range of 1,500 miles
161:
405:
and communication stations. The plans for the structure showed masts 300 feet (91 m) high and 2,700 yards (2,500 m) long. It is not known when the station closed but sources show that it was considered redundant by 1919.
480:
were granted permission to add four microwave dishes and equipment cabinets to the existing masts. Mercury were a mobile phone network provider who needed more coverage as sales of mobile phones soared. Planning applications from
385:
in
Oxfordshire. The contract for the Imperial Chain was terminated by the Post Office after the outbreak of war and the station was not used for its original function when Leafield was resurrected after the War.
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were received and forwarded to London for the price of 11d per word; the service proved successful and in 1924 a second mast with callsign 'GKU' was added.
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570:"Morgan's Hill: Site of Special Scientific Interest (SSSI) notified under Section 28 of the Wildlife and Countryside Act 1981"
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who administer radio and data technology for all emergency services. However, signage added in 2015 suggests that
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receiving station was built on the south-east slopes of the hill in 1913, as the receiving station for the
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mast nearby, being used for hydrographic or land survey uses, but its owner or operator is unknown.
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of Great
Britain, where rainfall drains into the English Channel (via this River Avon), the
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681:"ACCOMMODATION. Compensation: Devizes (Bishops' Cannings) Wireless Station; lease of site"
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79:
599:"Post Office. Lease of Crown land at Leafield, Oxon. (Whichwood Estate), and Bishop's"
438:, Somerset, and close the Devizes station in 1929. All equipment was removed by 1935.
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Signage on the masts and building suggest involvement from three mobile networks –
462:
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262:). Species present which have a particular affinity for the chalk habitat include
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communication at the peak of the hill, a small distance from previous stations.
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as an army intelligence station, used to determine the position of German
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erected two 46-metre (150') masts and an unmanned equipment building for
402:
422:(2,400 km). The equipment and staff were housed in old army huts.
192:
254:
The main habitat on the site is chalk grassland, largely dominated by
509:
445:
408:
388:
365:
188:
825:
853:
Biological Sites of
Special Scientific Interest in Wiltshire
397:
The structure was converted to military use in 1916 for the
454:
The hill continues to be used for radio communications.
489:
to add mobile phone equipment to the masts also exist.
143:
12.6 hectares (0.1260 km; 0.04865 sq mi)
579:. Designated Sites of Natural England. 30 January 1987
450:
The masts and building presently used at Morgan's Hill
1501:
Sites of
Special Scientific Interest notified in 1951
613:"Archive news from the Wiltshire Gazette and Herald"
393:
The remaining concrete bases from the original masts
289:
Several scarce and notable species occur, including
1491:
History of telecommunications in the United
Kingdom
817:
Wiltshire
Wildlife Trust's page about Morgan's Hill
157:
147:
139:
131:
92:
78:
68:
1496:Sites of Special Scientific Interest in Wiltshire
413:The interior of the last remaining equipment hut
709:"Portishead Radio History - transmitter sites"
185:biological Site of Special Scientific Interest
837:
8:
18:
546:Natural England citation sheet for the site
844:
830:
822:
31:
17:
52:
564:
562:
512:is the owner and operator of the masts.
345:) and – unusually for a downland site –
558:
695:"Devizes wireless station, WWI's GCHQ"
207:Morgan's Hill marks the hydrological
7:
1199:Lower Coombe and Ferne Brook Meadows
195:in Wiltshire, England. The SSSI was
25:Site of Special Scientific Interest
1124:Homington and Coombe Bissett Downs
812:Natural England (SSSI information)
14:
1506:Wiltshire Wildlife Trust reserves
1294:Restrop Farm and Brockhurst Wood
51:
44:
723:"The story of Portishead Radio"
663:"results - BT-Digital-Archives"
645:"results - BT-Digital-Archives"
627:"results - BT-Digital-Archives"
1319:Scratchbury & Cotley Hills
1179:Langley Wood and Homan's Copse
1149:Kennet and Lambourn Floodplain
183:) is a 12.6-hectare (31-acre)
1:
1194:Loosehanger Copse and Meadows
929:Brickworth Down and Dean Hill
429:By 1926, as experiments with
1204:Lower Woodford Water Meadows
1034:Dank's Down and Truckle Hill
1014:Colerne Park and Monk's Wood
383:Leafield transmitter station
163:Magic Map of Natural England
1419:Wylye and Church Dean Downs
994:Cloatley Manor Farm Meadows
954:Calstone and Cherhill Downs
199:in 1951 and again in 1987.
1522:
506:Airwave Communications Ltd
1432:
1159:Knapp and Barnett's Downs
1109:Harries Ground, Rodbourne
1019:The Coombes, Hinton Parva
859:
791:"Online Standard Details"
773:"Online Standard Details"
755:"Online Standard Details"
434:to open a new station at
60:Location within Wiltshire
39:
30:
23:
1334:Starveall and Stony Down
1304:Roundway Down and Covert
1079:Goldborough Farm Meadows
548:(accessed 17 April 2020)
249:Wiltshire Wildlife Trust
1249:Picket and Clanger Wood
1224:North Meadow, Cricklade
1164:Knighton Downs and Wood
1039:Distillery Farm Meadows
874:Baverstock Juniper Bank
529:Morgan's Hill Enclosure
379:Imperial Wireless Chain
370:The hill from the south
323:lesser butterfly orchid
1344:Stockton Wood and Down
1184:Little Grubbins Meadow
974:Chilton Foliat Meadows
939:Britford Water Meadows
515:There is also a small
478:Mercury Communications
459:Wiltshire Constabulary
451:
414:
394:
371:
1379:Upper Waterhay Meadow
1339:Steeple Langford Down
879:Bencroft Hill Meadows
449:
412:
392:
369:
1354:Stratford Toney Down
1349:Stoke Common Meadows
1209:Midford Valley Woods
1084:Great Cheverell Hill
1044:East Harnham Meadows
797:on 13 December 2014.
534:Wansdyke (earthwork)
291:round-headed rampion
284:Gentianella amarella
1359:Sutton Lane Meadows
1054:Emmett Hill Meadows
1024:Cotswold Water Park
969:Chickengrove Bottom
889:Bincknoll Dip Woods
761:on 9 December 2014.
669:on 10 January 2017.
517:real-time kinematic
470:Ministry of Defence
419:General Post Office
357:Communications site
351:Epipactis palustris
343:Herminium monorchis
335:Coeloglossum viride
327:Platanthera bifolia
319:Gymnadenia conopsea
295:Phyteuma orbiculare
243:The site is also a
112: /
20:
1436:Neighbouring areas
1394:Whiteparish Common
697:. 6 February 2005.
452:
415:
395:
372:
311:Ophrys insectifera
276:Hippocrepis comosa
116:51.4034°N 1.9615°W
1478:
1477:
1374:Tytherington Down
1064:Fonthill Grottoes
964:Chilmark Quarries
904:Bowerchalke Downs
869:River Avon System
864:Acres Farm Meadow
735:on 12 August 2013
347:marsh helleborine
303:Thesium humifusum
268:Polygala calcarea
169:
168:
1513:
1389:West Yatton Down
1314:Savernake Forest
1289:Ravensroost Wood
1154:King's Play Hill
1134:Inwood, Warleigh
846:
839:
832:
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799:
798:
793:. Archived from
787:
781:
780:
779:on 4 March 2016.
775:. Archived from
769:
763:
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757:. Archived from
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742:
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734:
728:. Archived from
727:
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665:. Archived from
659:
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651:on 29 June 2016.
647:. Archived from
641:
635:
634:
633:on 29 June 2016.
629:. Archived from
623:
617:
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609:
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589:
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299:bastard toadflax
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121:51.4034; -1.9615
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1455:Gloucestershire
1428:
1424:Yarnbury Castle
1409:Winklebury Hill
1399:Whitesheet Hill
1309:Salisbury Plain
1299:Rotherley Downs
1129:Honeybrook Farm
1119:Heath Hill Farm
1029:Cranborne Chase
979:Clattinger Farm
914:Bracknell Croft
894:Blackmoor Copse
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577:Natural England
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399:Royal Engineers
364:
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315:fragrant orchid
272:horseshoe vetch
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1404:Win Green Down
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1384:Upton Cow Down
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1279:Prescombe Down
1276:
1274:Porton Meadows
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1261:
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1239:Parsonage Down
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1219:The New Forest
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1174:Landford Heath
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984:Clearbury Down
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934:Brimsdown Hill
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806:External links
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424:Radiotelegrams
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280:autumn gentian
264:chalk milkwort
260:Bromus erectus
245:nature reserve
240:
239:Nature reserve
237:
221:Severn Estuary
213:Atlantic Ocean
204:
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176:grid reference
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80:Grid reference
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1264:Pincombe Down
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1214:Morgan's Hill
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1114:Haydon Meadow
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1059:Figsbury Ring
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949:Burderop Wood
947:
945:
944:Burcombe Down
942:
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937:
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932:
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927:
925:
924:Bratton Downs
922:
920:
919:Bradley Woods
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504:– as well as
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256:upright brome
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210:
209:triple divide
202:
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172:Morgan's Hill
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67:
47:
38:
34:
29:
26:
22:
19:Morgan's Hill
16:
1364:Throope Down
1324:Silbury Hill
1244:Pewsey Downs
1229:Odstock Down
1213:
1169:Landford Bog
1144:River Kennet
1139:Jones's Mill
1094:Gutch Common
1074:Gallows Hill
1069:Fyfield Down
1049:Ebsbury Down
999:Clout's Wood
884:Bentley Wood
795:the original
785:
777:the original
767:
759:the original
749:
737:. Retrieved
730:the original
717:
703:
689:
675:
667:the original
657:
649:the original
639:
631:the original
621:
607:
593:
581:. Retrieved
576:
514:
491:
475:
468:In 1990 the
467:
463:police radio
456:
453:
428:
417:In 1919 the
416:
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373:
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334:
326:
318:
310:
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288:
283:
275:
267:
259:
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217:Bristol Avon
206:
171:
170:
162:
158:Location map
149:Notification
15:
1465:Oxfordshire
1269:Porton Down
1259:Pike Corner
1009:Cockey Down
1004:Coate Water
899:Botley Down
442:Present use
339:musk orchid
331:frog orchid
119: /
94:Coordinates
1485:Categories
1369:River Till
1254:Piggledene
1189:Long Knoll
1089:Great Yews
553:References
436:Portishead
431:short-wave
307:fly orchid
223:) and the
203:Topography
135:Biological
104:51°24′12″N
1460:Hampshire
1445:Berkshire
1329:Spye Park
1284:Rack Hill
1234:Out Woods
1104:Hang Wood
989:Cley Hill
959:Camp Down
403:Zeppelins
227:(via the
225:North Sea
215:(via the
107:1°57′41″W
74:Wiltshire
1470:Somerset
1099:Ham Hill
909:Box Mine
583:17 April
523:See also
494:Vodafone
487:Vodafone
476:In 1998
457:In 1981
197:notified
187:between
180:SU028672
132:Interest
86:SU028672
70:Location
540:Sources
376:Marconi
362:History
247:of the
193:Devizes
1450:Dorset
739:30 May
510:Arqiva
498:Orange
483:Orange
278:) and
233:Thames
229:Kennet
733:(PDF)
726:(PDF)
573:(PDF)
189:Calne
1440:Avon
741:2014
585:2020
500:and
485:and
231:and
219:and
191:and
153:1951
140:Area
353:).
337:),
329:),
321:),
313:),
305:),
297:),
286:).
270:),
235:).
1487::
575:.
561:^
502:O2
496:,
374:A
251:.
845:e
838:t
831:v
743:.
711:.
683:.
615:.
601:.
587:.
349:(
341:(
333:(
325:(
317:(
309:(
301:(
293:(
282:(
274:(
266:(
258:(
174:(
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