User's Manual

Page 13
M Series Data Radio – User Manual
© Copyright 2004 Trio DataCom Pty. Ltd.
Part D – System Planning and Design
Examples of Predictive Path
Modelling
Clear line of site
Radio path with good signal levels, attenuated only by free space
loss.
Obstructed Radio Path
This path has an obstruction that will seriously degrade the signal
arriving at the field site.
obstpath.pl3 Major Repeater Site Field Site
Elevation (m)
703.83 309.67
Latitude 030 43 55.92 S 030 56 24.00 S
Longitude 150 38 49.51 E 150 38 48.00 E
Azimuth
180.10 0.10
Antenna Type ANT450/6OM ANT450/9AL
Antenna Height (m)
40.00 5.00
Antenna Gain (dBi)
8.15 11.15
Antenna Gain (dBd)
6.00 9.00
TX Line Type LDF4-50 LDF4-50
TX Line Length (m)
40.00 5.00
TX Line Unit Loss (dB/100 m)
6.79 6.79
TX Line Loss (dB)
2.72 0.34
Connector Loss (dB)
2.00 2.00
Frequency (MHz)
450.00
Path Length (km)
23.04
Free Space Loss (dB)
112.78
Diffraction Loss (dB)
16.71
Net Path Loss (dB)
117.25 117.25
Radio Type Model EB450 ER450
TX Power (watts)
5.00 1.00
TX Power (dBW)
6.99 0.00
Effective Radiated Power (watts)
6.71 4.63
Effective Radiated Power (dBW)
8.27 6.66
RX Sensitivity Level (uv)
0.71 1.26
RX Sensitivity Level (dBW) -140.00 -135.00
RX Signal (uv)
9.70 21.70
RX Signal (dBW) -117.25 -110.26
RX Field Strength (uv/m)
95.74 115.23
Fade Margin (dB)
22.75 24.74
Raleigh Service Probability (%)
99.470 99.665
goodpath.pl3 Major Repeater Site Field Site
Elevation (m)
756.69 309.67
Latitude 031 04 37.49 S 030 56 24.00 S
Longitude 150 57 26.34 E 150 38 48.00 E
Azimuth
297.05 117.21
Antenna Type ANT450/6OM ANT450/9AL
Antenna Height (m)
40.00 5.00
Antenna Gain (dBi)
8.15 11.15
Antenna Gain (dBd)
6.00 9.00
TX Line Type LDF4-50 LDF4-50
TX Line Length (m)
40.00 5.00
TX Line Unit Loss (dB/100 m)
6.79 6.79
TX Line Loss (dB)
2.72 0.34
Connector Loss (dB)
2.00 2.00
Frequency (MHz)
450.00
Path Length (km)
33.33
Free Space Loss (dB)
115.99
Diffraction Loss (dB)
0.00
Net Path Loss (dB)
103.75 103.75
Radio Type Model EB450 ER450
TX Power (watts)
5.00 1.00
TX Power (dBW)
6.99 0.00
Effective Radiated Power (watts)
6.71 4.63
Effective Radiated Power (dBW)
8.27 6.66
RX Sensitivity Level (uv)
0.71 1.26
RX Sensitivity Level (dBW) -140.00 -135.00
RX Signal (uv)
45.93 102.70
RX Signal (dBW) -103.75 -96.76
RX Field Strength (uv/m)
453.14 545.42
Fade Margin (dB)
36.25 38.24
Raleigh Service Probability (%)
99.976 99.985