It all began in the late 1800s / early 1900s with Morse Code sent by apparatus such as is pictured here.
But wow have things changed. Now Hams (Amateur Radio Operators) transmit using HF, VHF, UHF, Microwave, moonbounce, OSCAR satellites, many forms of Digital transmission, software defined radios and on and on and on.
Indeed there have been so many changes and advancements in Amateur radio that it will make your head spin.
It is totally amazing what Ham Radio Operators can do.
Beginning today at 2 pm EST Saturday and Ending at 2 PM EST on Sunday --
yes 24 hours -- including, of course, all night long--
you can find thousands (yes thousands) of Amateur Radio Operators (Hams) at multiple locations throughout the USA and even around the world communicating by these various modes and more.
Today's link will help you find a location near you.
Find a location and check it out.
It will be a fun weekend of activity
and since it is a come as you are -- day or night -- you will find a lot of interesting transmissions going on.
You don't have to stay all 24 hours but do drop in and learn about this exciting hobby.
HERE'S THE LINK to Field Day Sites Locator