An antenna apparatus comprising: an antenna reflector comprising a central opening; a choke shroud apparatus comprising: a cylindrical wall encircling a central axis, the cylindrical wall forming a distal end and a proximal end of the choke shroud apparatus, wherein the distal and proximal ends are configured to allow radio frequency, RF, electromagnetic radiation to pass through while the cylindrical wall is configured to attenuate, reflect or to attenuate and reflect RF electromagnetic radiation, the proximal end configured to be mounted at a forward open end of the antenna reflector for modifying electromagnetic radiation to and from the antenna reflector; a radome (89, 1306) closing the distal end; and a choke boundary region on a perimeter of the cylindrical wall, the choke boundary region comprising a plurality of ridges and channels extending along a direction parallel to the central axis from the cylindrical wall at the distal end, wherein the ridges are spaced concentrically from each other, the spacing between the ridges are different and further wherein the choke boundary region is configured to attenuate RF electromagnetic radiation to or from the antenna reflector when the choke shroud apparatus is mounted on the antenna reflector; a securing hoop configured to be tightened to lock the cylindrical wall over the open mouth of the antenna reflector by securing a screw; an integrated radio transceiver and feed configured to pass through the central opening of the antenna reflector and extend within the antenna reflector and choke shroud apparatus; and a holder mounted to the central opening of the antenna reflector and enclosing at least a portion of the integrated radio transceiver and feed, the holder configured to prevent transmission of RF energy out of the central opening and from a back of the integrated radio transceiver and feed, and the integrated radio transceiver and feed configured to be keyed within an inner region of the holder to maintain an orientation of the integrated radio transceiver and feed with respect to the antenna reflector. an antenna reflector comprising a central opening; a choke shroud apparatus comprising: a cylindrical wall encircling a central axis, the cylindrical wall forming a distal end and a proximal end of the choke shroud apparatus, wherein the distal and proximal ends are configured to allow radio frequency, RF, electromagnetic radiation to pass through while the cylindrical wall is configured to attenuate, reflect or to attenuate and reflect RF electromagnetic radiation, the proximal end configured to be mounted at a forward open end of the antenna reflector for modifying electromagnetic radiation to and from the antenna reflector; a radome (89, 1306) closing the distal end; and a choke boundary region on a perimeter of the cylindrical wall, the choke boundary region comprising a plurality of ridges and channels extending along a direction parallel to the central axis from the cylindrical wall at the distal end, wherein the ridges are spaced concentrically from each other, the spacing between the ridges are different and further wherein the choke boundary region is configured to attenuate RF electromagnetic radiation to or from the antenna reflector when the choke shroud apparatus is mounted on the antenna reflector; a cylindrical wall encircling a central axis, the cylindrical wall forming a distal end and a proximal end of the choke shroud apparatus, wherein the distal and proximal ends are configured to allow radio frequency, RF, electromagnetic radiation to pass through while the cylindrical wall is configured to attenuate, reflect or to attenuate and reflect RF electromagnetic radiation, the proximal end configured to be mounted at a forward open end of the antenna reflector for modifying electromagnetic radiation to and from the antenna reflector; a radome (89, 1306) closing the distal end; and a choke boundary region on a perimeter of the cylindrical wall, the choke boundary region comprising a plurality of ridges and channels extending along a direction parallel to the central axis from the cylindrical wall at the distal end, wherein the ridges are spaced concentrically from each other, the spacing between the ridges are different and further wherein the choke boundary region is configured to attenuate RF electromagnetic radiation to or from the antenna reflector when the choke shroud apparatus is mounted on the antenna reflector; a securing hoop configured to be tightened to lock the cylindrical wall over the open mouth of the antenna reflector by securing a screw; an integrated radio transceiver and feed configured to pass through the central opening of the antenna reflector and extend within the antenna reflector and choke shroud apparatus; and a holder mounted to the central opening of the antenna reflector and enclosing at least a portion of the integrated radio transceiver and feed, the holder configured to prevent transmission of RF energy out of the central opening and from a back of the integrated radio transceiver and feed, and the integrated radio transceiver and feed configured to be keyed within an inner region of the holder to maintain an orientation of the integrated radio transceiver and feed with respect to the antenna reflector.