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  2. Amateur radio homebrew - Wikipedia

    en.wikipedia.org/wiki/Amateur_radio_homebrew

    Homebrew is an amateur radio slang term for home-built, noncommercial radio equipment. [1] Design and construction of equipment from first principles is valued by amateur radio hobbyists, known as "hams", for educational value, and to allow experimentation and development of techniques or levels of performance not readily available as commercial products.

  3. Vintage amateur radio - Wikipedia

    en.wikipedia.org/wiki/Vintage_amateur_radio

    In the United States, amateur radio AM activity can be found on mediumwave, MF and shortwave, HF frequencies (in MHz) which include 1.880-1.890, 3.885, 7.290, 14.286, 21.390, and 29.000-29.200, and feature swap nets that cater to interest in vintage AM equipment.

  4. List of commercial video games released as freeware

    en.wikipedia.org/wiki/List_of_commercial_video...

    For games that were originally released as freeware, see List of freeware video games. For free and open-source games, and proprietary games re-released as FLOSS, see List of open-source video games. For proprietary games with released source code (and proprietary or freeware content), see List of commercial video games with available source code.

  5. Category:Homebrew video games - Wikipedia

    en.wikipedia.org/wiki/Category:Homebrew_video_games

    This category is located at Category:Homebrew software. Note: This category should be empty. The following categories are used to track and monitor this redirect:

  6. HH Electronics - Wikipedia

    en.wikipedia.org/wiki/HH_Electronics

    HH Electronics is a British amplifier manufacturer that was founded in 1968 by Mike Harrison, Malcolm Green and Graham Lowes in Harston near Cambridge, England, where its first solid state TPA and MA range of studio quality amplifiers were designed and manufactured. These amplifiers were used by many recording and broadcasting studios ...

  7. List of freeware video games - Wikipedia

    en.wikipedia.org/wiki/List_of_freeware_video_games

    This is a selected list of freeware video games implemented as traditional executable files that must be downloaded and installed. Freeware games are games that are released as freeware and can be downloaded and played, free of charge, for an unlimited amount of time. This list does not include: Open source games (see List of open-source video ...

  8. Category:Homebrew software - Wikipedia

    en.wikipedia.org/wiki/Category:Homebrew_software

    Nintendo Entertainment System homebrew games (6 P) Pages in category "Homebrew software" The following 51 pages are in this category, out of 51 total.

  9. RF power amplifier - Wikipedia

    en.wikipedia.org/wiki/RF_power_amplifier

    A radio-frequency power amplifier (RF power amplifier) is a type of electronic amplifier that converts a low-power radio-frequency (RF) signal into a higher-power signal. [1] Typically, RF power amplifiers are used in the final stage of a radio transmitter , their output driving the antenna .