Mossy Hill (Site Of)

Now called Twarri Field, the site has been cleared and only the access road and the line of the boundary fence are still present. It is a troposcatter communication system used by NATO during the cold war until better and more realiable satalite systems became available. It was part of a network across the NATO countries providing secure communications between military establishments and command and control installations. The site extends onto map sheet sits on two map sheets HU23SE.

Information from RCAHMS (AKK, HDS) 12 December 2011

NATO ACE HIGH Troposcatter radio link site.

The site appears to have been cleared completely from Google Earth.

Troposcatter is an over the horizon radio link system. ACE HIGH was the network passing “early warning” data amongst other things.

Ace High is a now abandoned NATO communications system whose chief characteristics were the huge dish antennas used and its massive radiated power in a frequency band used today for mobile phones.

Mossy Hill communicated with

1. Mormond Hill, Aberdeenshire by Troposcatter

2. Sola, Norway by Troposcatter (longest NATO link in Europe)

3. Saxa Vord by microwave link via Collafirth Hill, Shetland

http://www.subbrit.org.uk/rsg/features/ace_high/index.html

http://www.subbrit.org.uk/rsg/features/ace_high/index4.html

Article about Mossy Hill here - http://www.subbrit.org.uk/rsg/features/ace_high/index1.html

Information from Martin Briscoe 7 December 2011