Antenna system comprising a mast, wherein the mast comprises a base section and an extendable section, wherein the base section is configured to be arranged to a platform, and an antenna, wherein the antenna is arranged to be connected to the extendable section and to be rotatable in a plane essentially perpendicular to a longitudinal direction of the antenna (LD-a), and wherein the extendable section comprises a plurality of telescopic sections (8, 8', 8") configured to define an adjustable length of the extendable section along a longitudinal direction of the extendable section (LD-es), whereby the extendable section adopts a retracted configuration or a deployed configuration, and wherein the base section is arranged to the extendable section by means of a first pivot joint, whereby the extendable section is foldable in relation to the base section in a vertical plane (PLxy) parallel to the longitudinal direction of the extendable section (LD-es) and to a longitudinal direction of the base section (LD-bs) by means of the first pivot joint, wherein a longitudinal and transverse extension of the platform defines a horizontal plane (PLxz), and wherein the mast is configured to be rotatable in the horizontal plane (PLxz) and wherein the extendable section comprises a second pivot joint, whereby the antenna is foldable in relation to at least a part of the extendable section in the vertical plane (PLxy) being parallel to the longitudinal direction of the antenna (LD-a) and to the longitudinal direction of the extendable section (LD-es), by means of the second pivot joint, wherein the second pivot joint is arranged between an upper end of the extendable section and a lower end of the extendable section, whereby a part of the extendable section connected to the antenna and a part of the extendable section not connected to the antenna (2a") is formed, and whereby the part of the extendable section connected to the antenna is foldable in relation to the part of the extendable section not connected to the antenna (2a") in the vertical plane (PLxy) being parallel to the longitudinal direction of the extendable section (LD-es) and to the longitudinal direction of the base section (LD-bs), wherein the part of the extendable section connected to the antenna comprises the plurality of telescopic sections (8, 8', 8") between the second poivot joint and the antenna and wherein the part of the extendable section not connected to the antenna (2a") comprises the plurality of telescopic sections (8, 8', 8") between the first povit joint and the second pivot joint. a mast, wherein the mast comprises a base section and an extendable section, wherein the base section is configured to be arranged to a platform, and an antenna, wherein the antenna is arranged to be connected to the extendable section and to be rotatable in a plane essentially perpendicular to a longitudinal direction of the antenna (LD-a), and wherein the extendable section comprises a plurality of telescopic sections (8, 8', 8") configured to define an adjustable length of the extendable section along a longitudinal direction of the extendable section (LD-es), whereby the extendable section adopts a retracted configuration or a deployed configuration, and wherein the base section is arranged to the extendable section by means of a first pivot joint, whereby the extendable section is foldable in relation to the base section in a vertical plane (PLxy) parallel to the longitudinal direction of the extendable section (LD-es) and to a longitudinal direction of the base section (LD-bs) by means of the first pivot joint, wherein a longitudinal and transverse extension of the platform defines a horizontal plane (PLxz), and wherein the mast is configured to be rotatable in the horizontal plane (PLxz) and wherein the extendable section comprises a second pivot joint, whereby the antenna is foldable in relation to at least a part of the extendable section in the vertical plane (PLxy) being parallel to the longitudinal direction of the antenna (LD-a) and to the longitudinal direction of the extendable section (LD-es), by means of the second pivot joint, wherein the second pivot joint is arranged between an upper end of the extendable section and a lower end of the extendable section, whereby a part of the extendable section connected to the antenna and a part of the extendable section not connected to the antenna (2a") is formed, and whereby the part of the extendable section connected to the antenna is foldable in relation to the part of the extendable section not connected to the antenna (2a") in the vertical plane (PLxy) being parallel to the longitudinal direction of the extendable section (LD-es) and to the longitudinal direction of the base section (LD-bs), wherein the part of the extendable section connected to the antenna comprises the plurality of telescopic sections (8, 8', 8") between the second poivot joint and the antenna and wherein the part of the extendable section not connected to the antenna (2a") comprises the plurality of telescopic sections (8, 8', 8") between the first povit joint and the second pivot joint.