Tags
A tag is a keyword or label that categorizes your question with other, similar questions.
Questions about the design, selection, building, testing, mounting, or properties of antennas. See also specific tags: [antenna-theory], [antenna-construction], [dipole], etc.
938 questions
Designing antennas, selecting antennas for specific applications, properties of a given antenna design.
439 questions
Radio devices that use digital signal processing in place of analog electronic components to manipulate RF signals.
306 questions
Questions specific to rules, regulations, and practices in the United States of America.
301 questions
Materials and methods for building antennas, and design of supporting (non-conductive) structures. For design of antennas themselves, use [antenna-theory] instead.
281 questions
Questions regarding laws or other legal regulations pertaining directly to amateur radio. Also tag your question with the relevant location. If in doubt, always seek professional legal advice.
245 questions
The frequency range 3-30 MHz. HF radio waves often propagate by bouncing off the ionosphere, allowing communication between continents. This tag may also be used for questions about the 160 meter band (1.8 MHz), which while not HF is often referred to as such due to its similar propagation.
232 questions
Transmission of digital signals over Amateur Radio, including modes like PSK-31, RTTY, JT-65, JT-9, etc.
160 questions
A widely used toolkit used to develop software-defined radios and general signal processing applications.
149 questions
Questions about coaxial cables, including different types of cable, connectors, adapters, and other topics.
147 questions
Anything to do with wire antennas, including how to build one, how different wire antennas perform, how to tune them or when to use a balun, and what types of wire work best in certain antennas.
146 questions
Questions about RF propagation including measurements, beacons, modes (ionospheric, tropospheric, ground wave), etc.
146 questions
The system composed of an antenna and a feed line, and possibly also an RF ground connection, antenna tuner, balun, phasing device, et cetera.
145 questions
Questions about fixed impedance matching networks, the necessity of impedance matching, etc.
138 questions
Questions about power ratings and restrictions, including maximum power by law or for certain components, or about calculating power in certain situations.
133 questions
Questions related to the licensing of amateur radio operators and stations. Please also tag your question with the relevant location.
132 questions
Baofeng is a manufacturer of radio equipment. Use this tag for questions relating specifically to Baofeng products.
130 questions
Use this tag for questions about which frequencies to use or not use in certain locations/situations.
126 questions
A device that receives a signal and re transmits it either in the same band or by re-modulating it in a different band.
122 questions
Continuous Wave (CW), the modulation mode of switching a carrier on and off to encode information, or sending Morse code tones over AM or FM modes. Questions that are about Morse code alone and not about radio at all, such as a question asking about some Morse code in a movie, should use the "morse-code" tag instead. Questions about keying a radio should use this tag. Questions about Morse-code-related radio procedures, e.g. Q-codes, should use this tag.
119 questions
Use this tag for questions related to vertical antennas, the construction, characteristics and performance.
116 questions
Amateur radio satellites refer to any artificial object in Earth orbit that are useful for amateur radio purposes.
115 questions
Questions which involve the properties or applications of individual electronic components.
115 questions
Discussion related to the rtl-sdr project, which enables certain television dongles and other hardware to be used as a cheap SDR receiver
112 questions
Handheld Transceiver, or Handie-Talkie. A hand-held radio that looks like a large walkie-talkie, capable of transmitting and receiving amateur radio bands. Often can receive other bands as well.
110 questions
Devices for connecting balanced and unbalanced feed lines/antennas. Also covers questions about ununs, unbalanced-to-unbalanced connection.
104 questions
Impedance is the measure of the opposition that a circuit presents to an alternating current when a voltage is applied. This is a force of much interest to the radio amateur especially surrounding the connection to antennas.
102 questions
Use this tag for questions relating to RF and DC grounding in radio equipment. Specifically suggested methods, practices, equipment and regulations regarding grounding.
100 questions