Tensorbundle isn’t a hamradio webpage but is interesting for any microwavers. The founder of this webpages is Nazmul Hasan, electrical and computer engineer. He established the world’s first CST based antenna design channel called Tensorbundle during his senior years of undergrad in 2011, which now contains free antenna design, electromagnetics, and IC design tutorials.
Tensorbundle webpage: https://tensorbundle.wixsite.com/home
Tensorbundle YouTube channel: https://www.youtube.com/user/tensorbundle/videos
Tensorbundle Facebook page: https://www.facebook.com/tensorbundle/
Photos: Tensorbundle web