Ham Radio - History
Posted: Fri Jul 31, 2020 3:10 pm
I am studying a manual designed to prepare me to take a test to get licensed to operate a ham radio. Been wanting to do this for a long time. As I learn the ins and outs of using one, I will add to this thread. Our two hand held radios we ordered should be here next week, and a couple of friends are joining us on this adventure. The technology has come a long ways since it’s beginning. And, it can be a wonderful way to perform public service. Even keeping up on local fires in our area makes it a worthwhile hobby to get into.
Ham radio history
http://www.arrl.org/ham-radio-history
In 1873, James Clerk Maxwell presented his theory of the electromagnetic field. In 1901 Guglielmo Marconi communicated across the Atlantic with a radio device using high power and giant antennas. To curb interference, Congress approved the Radio Act of 1912, which required amateurs to be licensed and restricted to the single wavelength of 200 meters. In 1914 the American Radio Relay League was founded by Hiram Percy Maxim, who found that messages could be sent more reliably over long distances if relay stations were organized. Transatlantic transmitting and receiving tests began in 1921 and by July 1960 the first two-way contact via the Moon took place on 1296 MHz.
Today we’re on CW, phone, SSB, FM, packet, TV, PACTOR, PSK31, RTTY, and other modes, bouncing signals off the ground, ionosphere, and the Moon. Hams are active in nearly every country of the world and from ages less than 10 years to more than 100.
Much much more at this link:
http://www.arrl.org/files/file/About%20 ... _Years.pdf
Ham radio history
http://www.arrl.org/ham-radio-history
In 1873, James Clerk Maxwell presented his theory of the electromagnetic field. In 1901 Guglielmo Marconi communicated across the Atlantic with a radio device using high power and giant antennas. To curb interference, Congress approved the Radio Act of 1912, which required amateurs to be licensed and restricted to the single wavelength of 200 meters. In 1914 the American Radio Relay League was founded by Hiram Percy Maxim, who found that messages could be sent more reliably over long distances if relay stations were organized. Transatlantic transmitting and receiving tests began in 1921 and by July 1960 the first two-way contact via the Moon took place on 1296 MHz.
Today we’re on CW, phone, SSB, FM, packet, TV, PACTOR, PSK31, RTTY, and other modes, bouncing signals off the ground, ionosphere, and the Moon. Hams are active in nearly every country of the world and from ages less than 10 years to more than 100.
Much much more at this link:
http://www.arrl.org/files/file/About%20 ... _Years.pdf