Abstract: The invention provides a mast comprising a modular, hollow tubular body having cylindrical, outer wall segments with an outer surface and enclosing an axially extending cavity, said tubular body comprising in its cavity a first mast segment arranged in between a base segment and a second mast segment and releasably connected thereto. Each of the base, first and second mast segment has an internal structure for bearing the weight of the mast, the internal structure of the first mast segment comprises in the cavity an axially extending inner cylinder connected via radially extending ribs to outer cylinder portions at a first respectively a second end of the inner cylinder and said ribs axially extending from said first end to said second end. Said inner structure being surrounded by a removably mounted, outer wall segment.

Abstract: The invention provides a mast comprising a modular, hollow tubular body having cylindrical, outer wall segments with an outer surface and enclosing an axially extending cavity, said tubular body comprising in its cavity a first mast segment arranged in between a base segment and a second mast segment and releasably connected thereto. Each of the base, first and second mast segment has an internal structure for bearing the weight of the mast, the internal structure of the first mast segment comprises in the cavity an axially extending inner cylinder connected via radially extending ribs to outer cylinder portions at a first respectively a second end of the inner cylinder and said ribs axially extending from said first end to said second end. Said inner structure being surrounded by a removably mounted, outer wall segment.

Abstract: A multi-drive apparatus for phase shifters is disclosed. The disclosed multi-drive apparatus for phase shifters includes: a main-axle gear; a multiple number of output shafts each connected to a phase shifter; a multiple number of output gears coupled with the output shafts; and a cam part having the output shafts arranged on its upper surface, where at least one recess is formed in the upper surface of the cam part, and when at least one of the output shafts is inserted into the recess according to a movement of the cam part, then an output gear coupled with the output shaft inserted into the recess engages the main-axle gear. With the disclosed multi-drive apparatus, it is possible to drive multiple phase shifters using just two motors.

Abstract: A multi-drive apparatus for phase shifters is disclosed. The disclosed multi-drive apparatus for phase shifters includes: a main-axle gear; a multiple number of output shafts each connected to a phase shifter; a multiple number of output gears coupled with the output shafts; and a cam part having the output shafts arranged on its upper surface, where at least one recess is formed in the upper surface of the cam part, and when at least one of the output shafts is inserted into the recess according to a movement of the cam part, then an output gear coupled with the output shaft inserted into the recess engages the main-axle gear. With the disclosed multi-drive apparatus, it is possible to drive multiple phase shifters using just two motors.

Abstract: An antenna having a transformer exchangeable in accordance with tilting angle adjustment rate is disclosed. The antenna includes a phase shifter, a tilting adjustment apparatus and a transformer configured to move linearly in response to a force provided from the tilting adjustment apparatus, and deliver a force corresponding to the moving to the phase shifter.

Abstract: A dove tail device for adjusting tilting angle of an antenna by rotating an arm member using a motion member which moves linearly is disclosed. The dove tail device in an antenna includes a guide and a motion member configured to move on the guide. Here, the motion member is combined with a rotation arm of a phase shifter, the rotation arm rotates according as the motion member moves on the guide, and an arm member of the phase shifter rotates in response to rotation of the rotation arm.

Abstract: An apparatus for adjusting an inclination angle of an antenna using a rotatory power is disclosed, wherein a remote control unit is easily combined with the apparatus. The apparatus in an antenna having a phase shifter includes a power delivering member connected to the phase shifter, and a driving member combined with the power delivering member, and for providing a power to the power delivering member. Here, an inserting section is formed at a part of outside surfaces of the driving member, a remote control unit is inserted into the inserting section and rotates the driving member, and the power delivering member rotates in response to the power provided from the driving member. Accordingly, any given member is not removed when the remote control unit is combined with the apparatus. As a result, the remote control unit may be easily combined with the apparatus, and any member is not lost.

Abstract: A dove tail device for adjusting tilting angle of an antenna by rotating an arm member using a motion member which moves linearly is disclosed. The dove tail device in an antenna includes a guide and a motion member configured to move on the guide. Here, the motion member is combined with a rotation arm of a phase shifter, the rotation arm rotates according as the motion member moves on the guide, and an arm member of the phase shifter rotates in response to rotation of the rotation arm.

Abstract: An antenna having a transformer exchangeable in accordance with tilting angle adjustment rate is disclosed. The antenna includes a phase shifter, a tilting adjustment apparatus and a transformer configured to move linearly in response to a force provided from the tilting adjustment apparatus, and deliver a force corresponding to the moving to the phase shifter.

Abstract: An apparatus for adjusting an inclination angle of an antenna using a rotatory power is disclosed, wherein a remote control unit is easily combined with the apparatus. The apparatus in an antenna having a phase shifter includes a power delivering member connected to the phase shifter, and a driving member combined with the power delivering member, and for providing a power to the power delivering member. Here, an inserting section is formed at a part of outside surfaces of the driving member, a remote control unit is inserted into the inserting section and rotates the driving member, and the power delivering member rotates in response to the power provided from the driving member. Accordingly, any given member is not removed when the remote control unit is combined with the apparatus. As a result, the remote control unit may be easily combined with the apparatus, and any member is not lost.