Amateur radio operator
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 on radio frequencies assigned to the amate...
Amateur radio operator - Wikipedia
Amateur radio
Amateur radio (also called ham radio) is the use of designated radio frequency spectra for purposes of private recreation, non-commercial exchange of messages, wireless experimentation, self-training,...
Amateur radio - Wikipedia
History of amateur radio
Throughout the history of amateur radio, amateur radio enthusiasts have made significant contributions to science, engineering, industry, and social services. Research by amateur radio operators has f...
History of amateur radio - Wikipedia
Robert C. Michelson
Robert C. Michelson (born 1951) is an American engineer and academic widely known for inventing the entomopter, a biologically inspired flapping-winged aerial robot, and for having established the Int...
Robert C. Michelson - Wikipedia
Long delayed echo
Long delayed echoes (LDEs) are radio echoes which return to the sender several seconds after a radio transmission has occurred. Delays of longer than 2.7 seconds are considered LDEs. LDEs have a numbe...
Club de Radioaficionados de Guatemala
The Club de Radioaficionados de Guatemala (CRAG) (n English, Guatemala Amateur Radio Club) is a national non-profit organization for amateur radio enthusiasts in Guatemala. Key membership benefits o...
Frequency modulation
In telecommunications and signal processing, frequency modulation (FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave. (Compare with amplitude modu...
Frequency modulation - Wikipedia
Antenna tuner
An antenna tuner, transmatch, or antenna tuning unit (ATU), or antenna coupler is a device connected between a radio transmitter or receiver and its antenna to improve power transfer between them by m...
Antenna tuner - Wikipedia
Soteria FP7 Network
The Framework Programmes for Research and Technological Development, also called Framework Programmes or abbreviated FP1 through FP7 with "FP8" being named "Horizon 2020", are funding programmes creat...
Amplitude and phase-shift keying
Amplitude and phase-shift keying or asymmetric phase-shift keying (APSK), is a digital modulation scheme that conveys data by changing, or modulating, both the amplitude and the phase of a reference...
Telsiz ve Radyo Amatörleri Cemiyeti
The Telsiz ve Radyo Amatörleri Cemiyeti (TRAC) (in English, Wireless and Radio Amateur Society) is a national non-profit organization for amateur radio enthusiasts in Turkey. The organization was fou...
Morse code mnemonics

Although people can learn a mnemonic table quickly, mnemonics alone will not give anyone fluency in sending, hearing and decoding Morse code at a practical speed. There are other methods to learn...
Morse code mnemonics - Wikipedia
Yaesu VX-2R
The Yaesu VX series is a line of two sequences of compact amateur radio handheld transceivers produced by Yaesu. There is a line of ultra-compact lower-power dual-band (2 m and 70 cm) trance...
Yaesu VX-2R - Wikipedia
Radio spectrum
The radio spectrum is the part of the electromagnetic spectrum from 8.3 kHz to 3000 GHz allocated to some 40 Radiocommunication services in line to the Radio Regulations (RR) of the Internat...
Garry Shandling
Garry Emmanuel Shandling (born November 29, 1949) is an American comedian, actor, writer, producer, and director. He is best known for his work in It's Garry Shandling's Show and The Larry Sanders Sho...
Garry Shandling - Wikipedia
73 (magazine)
73 Magazine (also known as 73 Amateur Radio Today) (OCLC 22239204) was a United States-based amateur radio magazine that was published from 1960 to 2003. It was known for its strong emphasis on t...
Folded unipole antenna
The folded unipole antenna was first devised for broadcast use by John H. Mullaney, an American radio broadcast pioneer, and consulting engineer. A variation of a monopole antenna, it consists of a v...
Folded unipole antenna - Wikipedia
R. L. Drake Company
The R. L. Drake Company is a manufacturer of electronic communications equipment located in Miamisburg, Ohio. It is also known for its line of equipment for amateur radio and shortwave listening, buil...
R. L. Drake Company - Wikipedia
HAMSAT
HAMSAT also known as HAMSAT INDIA, VU2SAT and VO-52 is a microsatellite weighing 42.5 kilograms (93.7 lb), providing amateur radio satellite communications services for Indian and international a...
Kazakhstan Federation of Radiosport and Radio Amateur
The Kazakhstan Federation of Radiosport and Radio Amateur (in Kazakh, Қазақстанның Радиоспорт және Радиоәуесқой Федерациясы) (in Russian, Казахстанская Федерация Радиоспорта и Радиолюбительства) is a ...
Kazakhstan Federation of Radiosport and Radio Amateur - Wikipedia
Frequency sharing
In telecommunication, frequency sharing is the assignment to or use of the same radio frequency by two or more stations that are separated geographically or that use the frequency at different times. ...
Trans-Oceanic
The Trans-Oceanic (abbreviated T/O) was the name given to a series of portable radios produced from 1942 to 1981 by Zenith Radio. They were characterised by their heavy-duty, high-quality constructio...
Trans-Oceanic - Wikipedia
WSJT (Amateur radio software)
WSJT is a computer program used for weak-signal radio communication between amateur radio operators. The program was initially written by Joe Taylor, K1JT, but is now open source and is developed by ...
Decibel
The decibel (dB) is a logarithmic unit used to express the ratio between two values of a physical quantity, often power or intensity. One of these quantities is often a reference value, and in this ca...
160-meter band
Just above the mediumwave broadcast band, 160 meters refers to the band of radio frequencies between 1800 to 2000 kHz, which is the lowest radio frequency band allocated for use by amateur radio in mo...
Hallicrafters SX-117
The Hallicrafters SX-117 was a radio communications receiver manufactured by the Hallicrafters company in the 1960s.
The SX-117 was a triple conversion intermediate frequency receiver designed to ...
Practical Wireless
Practical Wireless is a British radio and electronics magazine, now published monthly by PW Publishing of Broadstone, Dorset. The current editor (2013) is Don Field, G3XTT.The magazine was founded in...
Practical Wireless - Wikipedia
Radiosport
Radiosport (or radio sport) is formal competition between amateur radio operators in any of three amateur radio activities. The Friendship Radiosport Games is an international multi-sport event that i...
Federacion Mexicana de Radio Experimentadores
The Federacion Mexicana de Radio Experimentadores, A.C. (FMRE) (in English, literally Mexican Federation of Radio Experimenters) is a national non-profit organization for amateur radio enthusiasts in...
Princess Muna al-Hussein
Princess Muna al-Hussein (born Antoinette Avril Gardiner; 25 April 1941) is the mother of King Abdullah II of Jordan. Until their divorce on 21 December 1971, she was the second wife of Hussein, the l...
Princess Muna al-Hussein - Wikipedia