[Antennas] Grounding needs**** some references

[LA7SL Nils P. Pedersen]

      IEC 1024-1 Protection of structures against lightning.
      Part 1: General principles, 1990 
      IEC 1024-1-1 Protection of structures against lightning.(Guide A) 
        Selection of protection levels for lightning protection system, 1993 
      IEC 1024-1-2 Protection of structures against lightning. ( Guide B) 
        Design, construction, maintenance and installation of lightning protection system, 1998  
     
      IEC 61312-1 Protection against lightning, Electro Magnetic Pulse (LEMP)  
      Part 1: General principles, 1995 
      IEC 61312-2 Protection against lightning, Electro Magnetic Pulse (LEMP)
      Part 2: Shielding of structures, bonding inside structures and earthing, 1999  
      IEC 61312-3 Protection against lightning, Electro Magnetic Pulse (LEMP)
      Part 3: Requirements of surge protective devices (SPDs), 2000 
      IEC 61312-4 Protection against lightning, Electro Magnetic Pulse (LEMP)
      Part 4: Protection of equipment in existing structures, 1998 
      IEC 61662 Technical report "Assessment of risk of damage due to lightning", 1994 
      IEC 61662 Technical report "Assessment of risk of damage due to lightning", Amd. 1, 1996 
      IEC 61663-1 Lightning protection Telecommunication lines
      Part 1: Fibre optic installations, 1999