
Chapter 2: Installation
98-141368-A 9
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 SAILOR Fleet One antenna.
The separation distance for C-band (4-8 GHz) radars should generally be the same as for X-
band radars.
X-band (~ 3 cm / 10 GHz) damage distance
Radar power
d min. at 15°
vertical separation
d min. at 60°
vertical separation
0 – 10 kW 0.8 m 0.4 m
30 kW 2.4 m 1.2 m
50 kW 4.0 m 2.0 m
S-band (~ 10 cm / 3 GHz) damage distance
Radar power
d min. at 30°
vertical separation
d min. at 75°
vertical separation
0 – 10 kW 0.4 m 0.2 m
30 kW 1.0 m 0.5 m
50 kW 2.0 m 1.0 m
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