Erratum: Amendment to the Briefing Session Date and Time: Proposals are hereby invited for the appointment of a service provider to provide rigging services and VHF antenna mast maintenance services, repairs, replacement, and support for a period of five (5) years at ATNS King Phalo Airport, Mthatha Airport, Bhisho Airport and the King Phalo Remote Sites. Scope of work: Antenna mast Maintenance activities may include, but not limited to the following activities: • Annual routine inspection and certification of the mechanical structures (antenna masts) including site grounding and anchor maintenance; - Conduct visual inspections annually, and do necessary repairs as follows: • Obstruction lighting systems (Compliant with Aviation standards); • Climbing devices; • Anchor points; • Painting and anticorrosion treatment of the masts; • Mast finish; • Antenna systems inspection, repairs and erection of new antennas ; • Replacement and installation of panel antennas, omnidirectional antennas and folded dipoles used at ATNS sites; • Inspect earthing of the mast and do necessary repairs; • Antenna repairs and replacement of the mast; • Antenna cable replacement and maintenance. Place where goods, works or services are required: ATNS Control Tower King Phalo Airport, 66 Settler"s Way, Greenfields, East London, 5208. Please confirm the contract number as two were published. (投標 №83793544cn)