With the advent of technology, there is an increase in demand for channel bandwidth, leading to the requirement of high frequencies for communication. In this talk, some modern day aspects and trends of high frequency communication will be presented. Emphasis will be given to applications like radio astronomical techniques, terahertz communication, etc., where the electromagnetic spectrum plays a critical role. The applications from the Indian scenario point of view will also be discussed in the talk. Co-sponsored by: IEEE AP-MTTS SBC IIT Kharagpur Speaker(s): Prof. Somak Bhattacharyya, Bldg: E&ECE Department, NKN Room, IIT Kharagpur, Kharagpur, West Bengal, India, 721302