Free-standing lattice towers are lightweight modular structures used in the field of telecommunications to support antenna needed for signal transmission. Due to their purpose, lattice towers reach considerable heights which, together with their reduced mass may render the structure sensitive to dynamic wind loading. This paper presents the estimation of damping of a 50 m high triangular telecommunication lattice tower from full-scale acceleration measurements. The tower is located in Afumați, Ilfov County, Romania and is equipped with a monitoring system comprising an ultrasonic anemometer and a triaxial accelerometer which were installed in September 2023. Full scale wind velocity and acceleration stationary records are used in order to analyze the wind-induced behavior of the tower. The modal parameters are estimated by making use of the Frequency Domain Decomposition method whereas the damping is evaluated based on the logarithmic decrement technique.