Ham Radio
Amateur radio (also called ham radio) is a hobby enjoyed by about 3 million people throughout the world and over 600,000 in the USA alone. It is about communications and the multiple ways of communicating through radio waves.
What most people do not know about this hobby and the people that are operators is that they are one of the most used groups as means of emergency communication, when other conventional means of communications fail, in a disaster situation for example.
Amateur Radio OperatorsAmateur radio is a hobby and has over 600,000 radio operators in the USA alone. The hobby is about communications and various ways of communicating via radio waves. What most people do not know about the hobby and the people that are operators is that they are one of the most used groups in a disaster situation. The amateur radio community has networks set up all over the world that can be activated quickly if there is a disaster anywhere in the world. Amateurs worked weeks at the site of 9-1-1 in New York side by side with rescue crews supplying communications. When there is a disaster such a hurricanes or tornadoes or the likes of 9-1-1 then one of the first things to go away is the local communications. Phones go down and electricity and the only thing left is amateur radio operators that can operate from a battery and a piece of wire for an antenna.
Slow-Scan Television (SSTV)
For SSTV to work, an image is "broken" into lines, composed of dots of colour and light intensity known as pixels. Each pixel is given a specific audio frequency ( that modulates the carrier) depending on its brightness. In a colour image, each of the primary colours, red green and blue are analysed for brightness. The lines of a picture are scanned from left to right. The modulating frequency varies between 1500Hz and 2300 Hz. There are a number of modes used for SSTV
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A Look At Ham RadioBy JM Anderson Ham radio is often referred to as amateur radio and is a hobby that is enjoyed by millions of individuals across the globe. A ham radio operator uses a two-way radio to broadcast with other amateurs for the purpose of entertainment, public service or other venture. On a recreational basis, ham radio can help to increase an individual’s self awareness of electronics, the operations of radio and communication. In addition, ham radio is often used to showcase entertainment for listeners and may even help to launch a new career for an amateur.
KG-UVD1P U.V Dual Band Multifunction Two-way Radio
Dual Band Dual Frequency Speedy switch on Work Mode P Version: Upgrade Function
Work Mode: UV, V-U, V-V, U-U Can be set freely
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SSTV is a mode that uses a computer and an amateur radio transceiver to send and receive still images over radio. SSTV was originally an analogue mode based on Frequency Modulation (FM). Digital SSTV has become possible with little trouble in recent times with the use of Digital Radio Mondiale (DRM). Despite the name "television", SSTV cannot send or receive moving pictures; it is more akin to sending a FAX.
My Rig has arrived :)