Codan Radio Radio Repeater Systems Training Guide - Manual (Page 79)

RADIO REPEATER SYSTEM | TRAINING GUIDE
Appendix I: Blank Worksheets Page 71
PATH CALCULATION WORKSHEET
Terminal 1
Terminal 2
Transmitter power watts(W) = 10(log W) = dBW
Cable, fi lter and connector loss dB
Antenna input power dBW
Antenna gain dB
Effective radiated power dBW
Propagation calculations:
Free space loss dB
Shadow loss:
Obstruction 1 dB
Obstruction 2 dB
Obstruction 3 dB
Other losses dB
Total dB dB
Received signal strength dBW
Antenna gain dB
Cable, fi lter, and connector loss dB
Receiver input signal S = dBW
Effective receiver threshold T = dBW
Difference between S and T (Useful fade margin) dB
Signal level: Anti log(fade margin/20) = (μV) microvolts