Neptune Technology R450, Руководство по установке и обслуживанию

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Coax Cable Loss
Coax Type FSJ4-50B LDF4-50A AVA5-50 Coax Type FSJ4-50B LDF4-50A AVA5-50
Loss 100 ft. 2.31 dB 1.45 dB 0.744 dB Loss 100 ft. 2.31 dB 1.45 dB 0.744 dB
Length (ft.) Loss in dB Length (ft.) Loss in dB
10 0.231 0.145 0.074 210 4.851 3.045 1.562
20 0.462 0.290 0.149 220 5.082 3.190 1.637
30 0.693 0.435 1.223 230 5.313 3.335 1.711
40 0.924 0.580 0.298 240 5.544 3.480 1.786
50 1.155 0.725 0.372 250 5.775 3.625 1.860
60* 1.386 0.870 0.446 260 6.006 3.770 1.934
70* 1.617 1.015 0.521 270 6.237 3.915 2.009
80* 1.848 1.160 0.595 280 6.468 4.060 2.083
90* 2.079 1.305 0.670 290 6.699 4.205 2.158
100* 2.310 1.450 0.744 300 6.930 4.350 2.232
110 2.541 1.595 0.818 310 7.161 4.495 2.306
120 2.772 1.740 0.893 320 7.392 4.640 2.381
130 3.003 1.885 0.967 330 7.623 4.785 2.455
140 3.234 2.030 1.042 340 7.854 4.930 2.530
150 3.465 2.175 1.116 350 8.085 5.075 2.604
160 3.696 2.320 1.190 360 8.316 5.220 2.678
170 3.927 2.465 1.265 370 8.547 5.365 2.753
180 4.158 2.610 1.339 380 8.778 5.510 2.827
190 4.389 2.755 1.414 390 9.009 5.655 2.902
200 4.620 2.900 1.488 400 9.240 5.800 2.976
* Acceptable Range
Table 17 – Coax Cable Loss Table
94 R450 Data Collector Installation and Maintenance Guide
Appendix A: RF Antenna Installation