Mechanical Data Ø 2.4 m HP,  HXP,  SHXP,  antennas.

MATERIAL AND TREATMENT.

A parabolic aluminium reflector with shield for sidelobe suppression. The reflector is spray painted. Standard colour is grey RAL7038. The mount and rear structure are made of hot dip galvanised steel. All screws, nuts and washers are made hot dip galvanised steel class 8.8. The antenna is supplied with flexible radome. Depending on frequency band the feed is made of brass or hot dip brazed aluminium. Further information are given in data-sheet for actual frequency range.

WEIGHT AND DIMENSIONS.













































INTERFACE:

115 mm column with  minimum length 1520 mm.

 

 

ALIGNMENT:

                Coarse:          Azimuth  + 50o (depends on column installation)

                Fine :             Both planes  + 8o   

 

 

Environment:

 

Wind  

Survival without permanent deformation.

               

                Wind speed up to 70 m/s and 25 mm radial ice.

                Maximum deflection at 45 m/s are 0.1 o.

 

Temperature range:          -55 oC  to  +55 oC

 


Atmosphere:

The antenna are designed to meet coastal and industrial atmosphere with 100% relative humidity.


Wind load:

Wind effect on parabolic antennas and support structures can be separated into two force components and a twisting moment as shown in figure 2. The side axial and twisting moment forces shown in table 1 are maximum values exerted on the supporting structure. In every case the value is the result of the wind from the most critical direction. All forces are referenced to the antenna mounting

  

Table 1 : Wind force
Wind speed
Maximum Axial force 
N ( kp)
Maximum Side force 
N ( kp)
Maximum Twisting 
moment Nm (kpm)
55 m/s  (200 km/h)
14149 (1444)
6831 (697)
5303 (549)
70 m/s  (252 km/h)
22919 (2339)
11065 (1129)

8709 (889)

 


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