The essence of the completed project for development of the beam switching planar antznna array incorporated into the meteorological radiosonde tracking radar is discussed. The 26 dEt gain antenna array operated in 1.765-1.795 GHz range consist of 4 switching subarrays. The beam forming network is controlled by radar computer and switchers between four beams tilted off broadside to k 2 degrees in principal planes thus providing conical scan. Each subarray comprises 13 square suspended patch antennas fed by air filled strip lines. To except start problems with high angle sonde velocity we complicated the main antenna array with additional 4-element antenna array. Radiation and input impedance of array and comprising elements characteristics were obtained from integral equation solution with kernel Green function for semi-infinite stratified medium. Proposed antenna system employs high speed electrical and low speed mechanical scan. Our radar is a light weighted, easy-To-move and simple to install and suitable for mobile-land applications.