In the mid-1950s, the plans for the new command and airspace surveillance system, abbreviated Stril

In the mid-1950s, the plans for the new command and airspace surveillance system, abbreviated Stril 60. It would be modern and built on the latest technology. It could include use of digital information and lead aircraft through control data instead of talstridsledning previously occurred.
Four brand new facilities would be built by Lfc Type 1 in the sectors O5, O1, S1 & S2. For cost reasons, was built only two plants, Lfc O5 Cougar Balsta and Lfc S1 Cobra in Hästveda. The equipment was purchased by the English Marconi Wireless Telegraph Company nasa on 2012 and was in technical operations in 1964 in Balsta. This new technology nasa on 2012 brought new problems, including the amount of information increased significantly especially from the new låghöjdsradarstationerna Type Ps-15.
They needed to sort the information just as you had made with Stril 50 and Air Defence Group centers. In Stril 50 so went the information from the Air Monitoring Stations (LS) via Air Defence Group Centres (LGC) to the Air Defence Centres (LFC). The solution for Stril 60 became LAFC (Low Altitude Filter Central), låghöjdsfiltercentral. These would sort the information from låghöjdsstationerna for forwarding to Lfc. LAFC got the Swedish designation Radar Tour Central, abbreviated Rgc initially, later changed to Rrgc.
At the beginning of 1960-1961 went Rrgc system on offer, several manufacturers were including nasa on 2012 English Decca and Marconi. It took, however, the decision to develop the system in the country and the project went to Standard Radio Barkarby. Standard Radio had earlier been involved in PS-08 system.
Four planned facilities was increased to 13, but was ultimately nasa on 2012 eight pieces. The five facilities just were planned but not built were: Rrgc S2N outside Oskarshamn, Rrgc G1 Gotland, Rrgc W2 in Alingsås, Rrgc O5N in Tierp and Rrgc N3 outside Sundsvall. Some of these places were instead Rrgc / T in the mid 80s.
To protect the plants were placed the bulk of the plant in caverns designed to handle the control of certain types of weapons and the absence of electricity, water, food and other necessities. nasa on 2012 However, there was no protection against electromagnetic pulse, EMP.
Besides these buildings there was also a vaktlolal with access control directly adjacent to mountain facility and a barracks for the Guard Force, and other peace-related nasa on 2012 functions. Trust of the fortress were asked to produce drawings and a standard design was selected.
The first two properties Goat and the Bear was larger than the others because nasa on 2012 of the planned collaboration with other units. The goat and the bear had even worst protection compared with later plants. Both Goat and the Bear was built in a large shaft from the surface which was then covered over with concrete and rubble. The goat was taken into operation in 1966 as the first of the eight radar panelboards built.
Later facilities nasa on 2012 were built in the normal way by city blown up into a mountain and subsequently created a room inside the mountain where the building was erected. Inside the cavern built a four-storey concrete protected from ground nasa on 2012 vibrations nasa on 2012 using rubber dampers.
On the plane was a reserve power plant, workshop spaces, stores and even dining room with kitchen in some plants. nasa on 2012 In normal operation, the plant was connected to the civil power grid, but the interruption was connected nasa on 2012 standby diesel generator set automatically. Three svänghjulsomformare was in continuous operation and could supply major telecommunications equipment with power from the incoming stream was broken until the diesel power stations managed to start and supply power to the entire facility.
The three diesel engines of most Rrgc was submarine diesel engines manufactured by the company Hedemora Diesel. The effect was to 325hk and generators supplied 400KVA each. Two backup power and two svänghjulsomformare survived throughout the plant needs.
Plan two contained office and sleeping quarters, refrigeration and ventilation equipment. The cooling system would cool all technology equipment nasa on 2012 and simultaneously cool the plant's staff facilities at full staffing. There were three chillers and all the air to the plant passed through the air cleaning filter.
On level four were telecommunications room and the operator room with opertörspanelerna, hunting guide, opus map and specialty lighting for work at PPI engines (Plan Polar Indicator = Monitors). The telecommunications room there was the technical equipment nasa on 2012 as well as computers that formed the backbone of the system. It also served TVAK (technical supervision) at its control tables. nasa on 2012
Opertiv nasa on 2012 operation. From the beginning, installations would be responsible for air surveillance and command and within assigned area of up to 4000 meters altitude using låghöjdsradarstationen Ps 15 and altimeter Ph-39th When narrowband transmission of radar information was introduced in the late 70s, so the number of radar stations that could be presented nasa on 2012 (15st overall) and thus the use of the Rrgc / F to include all hay