M Thread Starter micro1 Joined Feb 22, 2015 79 Apr 29, 2016 #1 hi all I have a question in my mind: how it was radio frequency spectrum Past and Present( is mean now )? how it was antennas Past and Present(is mean now )? Last edited: Apr 30, 2016
hi all I have a question in my mind: how it was radio frequency spectrum Past and Present( is mean now )? how it was antennas Past and Present(is mean now )?
bertus Joined Apr 5, 2008 21,156 Apr 30, 2016 #2 Hello, Have a look at some very old books that you can download here: http://www.tubebooks.org/technical_books_online.htm Then compare them with new books you might find in the library. Bertus
Hello, Have a look at some very old books that you can download here: http://www.tubebooks.org/technical_books_online.htm Then compare them with new books you might find in the library. Bertus
M Thread Starter micro1 Joined Feb 22, 2015 79 Apr 30, 2016 #3 please Join me your ideas about radio frequency spectrum and antennas at old and now