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Amateur Radio is a radio service that anyone can get involved with. Amateur radio is also known as" Ham" radio, which you may have heard of it at one time or another. No one knows for sure why amateur radio operators are called hams, the original meaning has been lost over the years. Many theories exists as to the meaning of "ham", but nothing concrete. Amateur radio operators have been around since the beginning of radio, but the Amateur Radio Service did not come along until the advent of a licensing body. During the beginning of radio, around the turn of the century, many basement experimenters built radio transmitters and receivers. These were called Spark Gap transmitters. They occupied a very wide bandwidth when transmitting. These stations would interfere with ship to shore communications on several occasions with their wide bandwidth transmissions. After years of complaints from these ship to shore stations, and among other concerns, it was decided that thi

Main article: Amateur radio frequency allocations The International Telecommunication Union (ITU) governs the allocation of communications frequencies worldwide, with participation by each nation's communications regulation authority. National communications regulators have some liberty to restrict access to these frequencies or to award additional allocations as long as radio services in other countries do not suffer interference. In some countries, specific emission types are restricted to certain parts of the radio spectrum, and in most other countries, International Amateur Radio Union (IARU) member societies adopt voluntary plans to ensure the most effective use of spectrum. In a few cases, a national telecommunication agency may also allow hams to use frequencies outside of the internationally allocated amateur radio bands. In Trinidad and Tobago, hams are allowed to use a repeater which is located on 148.800 MHz. This repeater is used and maintained by the National Emergency

Unlike other RF spectrum users, radio amateurs may build or modify transmitting equipment for their own use within the amateur spectrum without the need to obtain government certification of the equipment.[23][24] Licensed amateurs can also use any frequency in their bands (rather than being allocated fixed frequencies or channels) and can operate medium to high-powered equipment on a wide range of frequencies[25] so long as they meet certain technical parameters including occupied bandwidth, power, and maintenance of spurious emission. As noted, radio amateurs have access to frequency allocations throughout the RF spectrum, enabling choice of frequency to enable effective communication whether across a city, a region, a country, a continent or the whole world regardless of season or time day or night. The shortwave bands, or HF, can allow worldwide communication, the VHF and UHF bands offer excellent regional communication, and the broad microwave bands have enough space, or bandwidth

In all countries, amateur radio operators are required to pass a licensing exam displaying knowledge and understanding of key concepts [18] . In response, hams are granted operating privileges in larger segments of the radio frequency spectrum using a wide variety of communication techniques with higher power levels permitted. This practice is in contrast to unlicensed personal radio services such as CB radio , Multi-Use Radio Service , or Family Radio Service / PMR446 that require type-approved equipment restricted in frequency range and power. In many countries, amateur licensing is a routine civil administrative matter. Amateurs are required to pass an examination to demonstrate technical knowledge, operating competence and awareness of legal and regulatory requirements in order to avoid interference with other amateurs and other radio services. There are often a series of exams available, each progressively more challenging and granting more privileges in terms of frequency avail

Activities and practices Specialized Interests and modes While many hams simply enjoy talking to friends, others pursue a wide variety of specialized interests. Amateur Radio Direction Finding , also known as "Fox hunting" Amateur radio emergency communications Amateur television Communicating via amateur satellites Contesting , earning awards , and collecting QSL cards Designing new antennas DX communication to far away countries DX-peditions Hamfests , club meetings and swap meets Hand building homebrew amateur radio gear High speed multimedia and TCP/IP High Speed Telegraphy Packet radio Portable , fixed, mobile and handheld operation Low-power operation (QRP) . Severe weather spotting Tracking tactical information using the Automatic Packet Reporting System (APRS), which may integrate with the GPS Using the Internet Radio Linking Project (IRLP) to connect radio repeaters via the Internet VHF , UHF and microwave operation on amateur radio high bands Vintage amateu

Though its origins can be traced to at least the late 1800s, amateur radio, as practiced today, did not begin until the early 1900s. The first listing of amateur radio stations is contained in the First Annual Official Wireless Blue Book of the Wireless Association of America in 1909. [3] This first radio callbook lists wireless telegraph stations in Canada and the United States, including eighty-nine amateur radio stations. As with radio in general , the birth of amateur radio was strongly associated with various amateur experimenters and hobbyists. Throughout its history, amateur radio enthusiasts have made significant contributions to science , engineering , industry , and social services . Research by amateur radio operators has founded new industries [4] , built economies [5] , empowered nations [6] , and saved lives [7] in times of emergency.

"Ham radio" redirects here. For other uses, see Ham radio (disambiguation) . Amateur radio, often called ham radio , is both a hobby and a service in which participants, called "hams," use various types of radio communications equipment to communicate with other radio amateurs for public service , recreation and self-training. [1] Amateur radio operators enjoy personal (and often worldwide) wireless communications with each other and are able to support their communities with emergency and disaster communications if necessary, while increasing their personal knowledge of electronics and radio theory. An estimated six million people throughout the world are regularly involved with amateur radio. [2] The term " amateur " is not a reflection on the skills of the participants, which are often quite advanced; rather, "amateur" indicates that amateur communications are not allowed to be made for commercial or money-making purposes.