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  2. Vintage amateur radio - Wikipedia

    en.wikipedia.org/wiki/Vintage_amateur_radio

    Vacuum tube transmitter "Glowbugs" are a related aspect of vintage radio and harken back to the early days of amateur radio, when the majority of hams hand-crafted their own equipment. Smaller in size than "boat anchors", "glowbug" is a term used by US amateurs to describe a simple home-made tube-type radio set.

  3. 6SN7 - Wikipedia

    en.wikipedia.org/wiki/6SN7

    The Tube Collectors Association; Datasheet on the 6SN7; RCA Receiving Tube Manual, RC-14, Harrison NJ, 1940; RCA receiving Tube Manual, RC-29, harrison NJ, 1973; Sylvania Technical Manual 14th edition (reprint), 2000; GE Techni-Talk, Volume 6 number 5, October–November 1954; Datasheet on the 6CG7; SPICE MODEL; Reviews of 6sn7 tubes.

  4. 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.

  5. List of vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_vacuum_tubes

    For signal pentodes, an odd model number most often identified a variable-mu (remote-cutoff) tube, whereas an even number identified a 'high slope' (sharp-cutoff) tube For power pentodes and triode-pentode combinations, even numbers usually indicate linear (audio power amplifier) devices while odd numbers were more suited to video signals or ...

  6. 6DJ8 - Wikipedia

    en.wikipedia.org/wiki/6DJ8

    The 6DJ8 is a miniature nine-pin medium-gain dual-triode vacuum tube. It is distinguished by its very high transconductance , mostly the result of its frame grid construction. Versions of the tube are named ECC88, E88CC, 6922, E188CC, CV4108, 7308, 6N1P and 6N23P.

  7. Tung-Sol - Wikipedia

    en.wikipedia.org/wiki/Tung-Sol

    Reviews of KT88 tubes. Tung-Sol 1935 Radio Guide; Complete 1948 Technical Data Book (vacuum tube manual)—28 MB PDF, 1028 pages; Electronic Design October 1953 —PDF browser viewable, 75 pages, featuring Tung-Sol tube 5881 ad. Electronic Designs July 15, 1956 —20.79 MB PDF viewable, 160 pages features Chatham tube 5998 ad.

  8. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Swan Electronics - Wikipedia

    en.wikipedia.org/wiki/Swan_Electronics

    Herbert G. Johnson, W6QKI, founded Swan Engineering. Johnson built the first ten largely vacuum tube type design single sideband (SSB) transceivers in a garage in Benson, Arizona, in 1960-1961. The more expensive Collins KWM-2 was the only other competing transceiver at the time. The operation moved to Oceanside, California, where, at one point ...

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