HAM RADIO AND ITS APPLICATIONS.

                                    HAM RADIO

first thing that come in our mind after listening this name HAM RADIO is " It whould be something like fm radio that has a broadcast  radio station that you tune to your radio at something like 98.3 MHZ and start listening Radio mirchi , its hot "

but .... ye dikhta radio ki tarh h nam v radio h ,,,lekin ye fm radio nh h,,,,,

Amateur Radio (ham radio) is a popular hobby and service that brings people, electronics and communication together. People use ham radio to talk across town, around the world, or even into space, all without the Internet or cell phones. It's fun, social, educational, and can be a lifeline during times of need.
Ham radio is still relevant today because it is two-way communication that can endure earthquakes, hurricanes, and most any other disaster. Ham radio operators can make their wireless signal reach far beyond the distance of cell phones, family radios, or even CB radios because of the higher transmitting power allowed to them. It is essential to any emergency situation to include the use of ham radio for communication.
Ham radio helps build communication skills by talking and communicating with others. It’s one of the lost skills in this era where we find ourselves talking more to computers than real people.
one of its advanced application is packet radio.

Packet radio is a form of packet switching technology used to transmit digital data via radio or wireless communications links. It uses the same concepts of data transmission via Datagram that are fundamental to communications via the Internet, as opposed to the older techniques used by dedicated or switched circuits.

Amateur television (ATV) is the transmission of broadcast quality video and audio over the wide range of frequencies of radio waves allocated for radio amateur (Ham) use.^[1] ATV is used for non-commercial experimentation, pleasure and public service events. Ham TV stations were on the air in many cities before commercial television stations came on the air.^[2] Various transmission standards are used, these include the broadcast transmission standards of NTSC in North America and Japan, and PAL or SECAM elsewhere, utilizing the full refresh rates of those standards. ATV includes the study of building of such transmitters and receivers, and the study of radio propagation of signals travelling between transmitting and receiving stations.
ATV is an extension of amateur radio. It is also called HAM TV or fast-scan TV (FSTV), as opposed to slow-scan television (SSTV). SSTV is a method of transmitting still images over radio, when it is not possible to send video

lets us come to one more advanced apllication.......PSK31

PSK31 or "Phase Shift Keying, 31 Baud" is a popular computer-soundcard-generated radioteletype mode, used primarily by amateur radio operators to conduct real-time keyboard-to-keyboard chat, most often using frequencies in the high frequency amateur radio bands (near-shortwave). PSK31 is distinguished from other digital modes in that it is specifically tuned to have a data rate close to typing speed, and has an extremely narrow bandwidth, allowing many conversations in the same bandwidth as a single voice channel. This narrow bandwidth also concentrates the RF energy in a very narrow bandwidth, allowing relatively low-power equipment (25 watts) to communicate globally using the same skywave propagation used by shortwave radio stations.

There are so many advanced application of ham radio .......we cant say we know every application of ham radio ,with the advancement of electronics technology its application is also increasing . 

you may thing that being a technical device It must have cost around few 1000/- or 10000/- but this is not true you can start we even 200/-to get into this technical hobby.