Amateur radio, also known as ham radio, is the use of the radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation...

An amateur radio operator is someone who uses equipment at an amateur radio station to engage in two-way personal communications with other amateur operators...

Telecommunication Union (ITU) oversees how much radio spectrum is set aside for amateur radio transmissions. Individual amateur stations are free to use any frequency...

An amateur radio satellite is an artificial satellite built and used by amateur radio operators. It forms part of the Amateur-satellite service. These...

An amateur radio station is a radio station designed to provide radiocommunications in the amateur radio service for an amateur radio operator. Radio amateurs...

An amateur radio contact, more commonly referred to as simply a "contact", is an exchange of information between two amateur radio stations. The exchange...

Amateur radio or ham radio is practised by more than 22,000 licensed users in India. The first amateur radio operator was licensed in 1921, and by the...

An amateur radio repeater is an electronic device that receives a weak or low-level amateur radio signal and retransmits it at a higher level or higher...

OpenBSD. Amateur radio station § Computer-control software List of amateur radio modes Software-defined radio "DX Atlas: Amateur Radio software". www.dxatlas...

the United States, amateur radio licensing is governed by the Federal Communications Commission (FCC). Licenses to operate amateur stations for personal...

Amateur radio call signs are allocated to amateur radio operators around the world. The call signs are used to legally identify the station or operator...

CQ Amateur Radio (also known simply as CQ or CQ magazine, and formerly as CQ: The Radio Amateur's Journal) is a magazine for amateur radio enthusiasts...

Vintage amateur radio is a subset of amateur radio hobby where enthusiasts collect, restore, preserve, build, and operate amateur radio equipment from...

modes of radio communication used in the amateur radio hobby. Amateurs use a variety of voice, text, image, and data communications modes over radio. Generally...

radiotelegraph communication and later adopted by other radio services, especially amateur radio. To distinguish the use of a Q-code transmitted as a question...

Amateur radio direction finding (ARDF, also known as radio orienteering, radio fox hunting and radiosport) is an amateur racing sport that combines radio...

The history of amateur radio, dates from the dawn of radio communications, with published instructions for building simple wireless sets appearing at...

M17 is a digital radio modulation mode developed by Wojciech Kaczmarski (amateur radio call sign SP5WWP) et al. M17 is primarily designed for voice communications...

annual amateur radio contest, widely sponsored by IARU regions and member organizations, encouraging emergency communications preparedness among amateur radio...

amateur radio operating award is earned by an amateur radio operator for establishing two-way communication (or "working") with other amateur radio stations...

In the United States and Canada, the Amateur Radio Emergency Service (ARES) is a corps of trained amateur radio operator volunteers organized to assist...

The Trinidad and Tobago Amateur Radio Society, Inc. (TTARS) is the national amateur radio organization in the Republic of Trinidad and Tobago. It is a...

The American Radio Relay League (ARRL) is the largest membership association of amateur radio enthusiasts in the United States. ARRL is a non-profit organization...

Homebrew is an amateur radio slang term for home-built, noncommercial radio equipment. Design and construction of equipment from first principles is valued...

various countries in the amateur radio service as a citizen of their country has been assigned there. The first amateur radio call sign assigned to the...

battery power. The use of amateur radio transmitters on an ARHAB flight requires an amateur radio license, but non-amateur radio transmitters are possible...

In amateur radio, QRP operation refers to transmitting at reduced power while attempting to maximize one's effective range. QRP operation is a specialized...

Amateur film Amateur geology or rockhounding, including a list of notable amateur geologists Amateur journalism Amateur radio Amateur sports Amateur theatre...

bands for amateur radio use see: Authorized frequency bands US ARRL Amateur Radio Bands and power limits Graphical Frequency Allocations ITU Radio Regulations...

Radio amateurs must hold an amateur radio license and are given a unique callsign that must be used as an identifier in transmissions. Amateur radio is...