CABLE-LOSS 7C-2V dB/km 10 21.7 50 50.0 70 59.8 90 68.4 250 119.5 300 132.3 450 166.6 770 228.0 1340 318.7 1550 348.8 1770 379.1 1900 396.4 ALL RIGHT RESERVED DIGINET TOKYO ANTENNA CONSTRUCTION HIROSHI MITSUYA