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Chapter 2: Installing the system
12
Placing the antenna
Radar distance
The minimum acceptable separation (d min.) between a radar and the
antenna is determined by the radar wavelength/frequency and the power
emitted by the radar. The tables below show some “rule of thumb” minimum
separation distances as a function of radar power at X and S band. If the d
min. separation listed below is applied, antenna damage is normally avoided.
“d min.” is defined as the shortest distance between the radar antenna (in any
position) and the surface of the TracPhone antenna.
X-band (~ 3 cm / 10 GHz) damage distance
Radar
power
TracPhone FB500
TracPhone FB250
d min. at 15°
vertical
separation
d min. at 60°
vertical
separation
d min. at 15°
vertical
separation
d min. at 60°
vertical
separation
0 – 10 kW
0.8 m
0.4 m
0.8 m
0.4 m
30 kW
2.4 m
1.2 m
2.4 m
1.2 m
50 kW
4.0 m
2.0 m
4.0 m
2.0 m
S-band (~ 10 cm / 3 GHz) damage distance
Radar
power
TracPhone FB500
TracPhone FB250
d min. at 15°
vertical
separation
d min. at 60°
vertical
separation
d min. at 30°
vertical
separation
d min. at 75°
vertical
separation
0 – 10 kW
0.4 m
0.2 m
0.4 m
0.2 m
30 kW
1.0 m
0.5 m
1.0 m
0.5 m
50 kW
2.0 m
1.0 m
2.0 m
1.0 m
Summary of Contents for FB250
Page 13: ...Table of contents xii ...
Page 77: ...Chapter 3 Connecting power 64 Connecting power ...
Page 105: ...Chapter 5 Starting up the system 92 Operating the system ...
Page 129: ...Chapter 6 Service and repair 116 Replacing modules in 34 3052B antenna ...
Page 139: ...Chapter 7 Troubleshooting 126 Logging of events ...
Page 165: ...Appendix B Technical specifications 152 TracPhone terminal ...
Page 197: ...Glossary 184 ...