Construction of a 36m Monopole Antenna to replace the 42m shrink wire antenna of BTS TAN - LAN - 2 Can Duoc; Construction of a 24m triangular self-standing antenna on the roof to replace the 24m flexible wire antenna on the roof of Huong Tho Phu BTS station; Construction of a quadrilateral self-standing antenna on the roof of a 27m high roof to replace the 45m triangular wire antenna of Hau - Nghia _LAN BTS station - 2024