VARNA HF COMMUNICATIONS FACILITY USSR · (subsurface) antenna under construction 3 double rhombic antenna anchor positions 1 earth-mounded. control building 1 earth-mounded. building

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VARNA HF COMMUNICATIONS FACILITY USSR · (subsurface) antenna under construction 3 double rhombic antenna anchor positions 1 earth-mounded. control building 1 earth-mounded. building

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