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  2. Vintage amateur radio - Wikipedia

    en.wikipedia.org/wiki/Vintage_amateur_radio

    The proliferation of integrated circuits in modern amateur radio equipment has made amateurs nostalgic for vacuum tube-based designs. Radios that contain solid state parts do not require frequent tinkering, whereas vacuum tube radio equipment is less predictable, lending routine radio contacts more excitement, and giving vintage amateur radio ...

  3. Tube sound - Wikipedia

    en.wikipedia.org/wiki/Tube_sound

    Tube sound (or valve sound) is the characteristic sound associated with a vacuum tube amplifier (valve amplifier in British English), a vacuum tube-based audio amplifier. [1] At first, the concept of tube sound did not exist, because practically all electronic amplification of audio signals was done with vacuum tubes and other comparable ...

  4. List of amateur radio software - Wikipedia

    en.wikipedia.org/wiki/List_of_amateur_radio_software

    Suitable for general logging or contesting, it can be customized to use almost any combination of fields in the ADIF 3.1.4 specification. Ham Radio Deluxe: Proprietary Windows Logging, Transceiver control, Rotor control, Callbook lookup, QSL handling (Hardcopy / LoTW / eQSL / Club Log), Awards, DX Spots, Digital modes, Satellite Tracking HAMRS

  5. Contest logging software - Wikipedia

    en.wikipedia.org/wiki/Contest_logging_software

    The primary purpose of contest logging software is to record the details of two-way radio contacts made during amateur radio contests. At a minimum, these details include the time, band or frequency of operation, the call sign of the other station, and the received "exchange" data. This log data is recorded in a binary or ASCII format. Most ...

  6. Valve RF amplifier - Wikipedia

    en.wikipedia.org/wiki/Valve_RF_amplifier

    A valve RF amplifier (UK and Aus.) or tube amplifier is a device for electrically amplifying the power of an electrical radio frequency signal. Low to medium power valve amplifiers for frequencies below the microwaves were largely replaced by solid state amplifiers during the 1960s and 1970s, initially for receivers and low power stages of ...

  7. Linear amplifier - Wikipedia

    en.wikipedia.org/wiki/Linear_amplifier

    Large vacuum-tube linear amplifiers generally rely on one or more vacuum tubes supplied by a very high voltage power supply to convert large amounts of electrical energy into radio frequency energy. Linear amplifiers need to operate with class-A or class-AB biasing, which makes them relatively inefficient. While class C has far higher ...

  8. Valve audio amplifier - Wikipedia

    en.wikipedia.org/wiki/Valve_audio_amplifier

    A valve audio amplifier or vacuum tube audio amplifier is a valve amplifier used for sound reinforcement, sound recording and reproduction. Until the invention of solid state devices such as the transistor , all electronic amplification was produced by valve (tube) amplifiers.

  9. Valve amplifier - Wikipedia

    en.wikipedia.org/wiki/Valve_amplifier

    A valve amplifier or tube amplifier is a type of electronic amplifier that uses vacuum tubes to increase the amplitude or power of a signal. Low to medium power valve amplifiers for frequencies below the microwaves were largely replaced by solid state amplifiers in the 1960s and 1970s.

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