Category:Spark-gap transmitters

Subcategories

This category has the following 2 subcategories, out of 2 total.

Media in category "Spark-gap transmitters"

The following 107 files are in this category, out of 107 total.

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  00159 Oscillatore del Righi.jpg 5,184 × 3,456; 4.88 MB
  
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  Airwaves.jpg 527 × 526; 204 KB
  
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  Bill's HF Start for a TIG welder (2986184847).jpg 2,304 × 3,072; 2.72 MB
  
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  Bill's HF Start for a TIG welder (2986184869).jpg 1,152 × 1,536; 345 KB
  
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  Boîte de couplage émetteur 500kHz.jpg 1,668 × 2,204; 5.04 MB
  
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  Bundesarchiv Bild 102-10517, Nauen, Umspul-Raum der Grossfunkstation.jpg 800 × 564; 86 KB
  
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  Bundesarchiv Bild 102-10978, Nauen, Grossfunkstation.jpg 800 × 558; 71 KB
  
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  Bundesarchiv Bild 102-13265, Nauen, Funkstation.jpg 800 × 559; 61 KB
  
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  COLLECTIE TROPENMUSEUM Telegrafist die telegrammen ontvangt op Sabang TMnr 10022280.jpg 700 × 554; 81 KB
  
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  Die Gartenlaube (1899) b 0764 1.jpg 1,087 × 1,626; 127 KB
  
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  Die Gartenlaube (1899) b 0764 3.jpg 1,654 × 1,388; 173 KB
  
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  Donald Manson working as an employee of the Marconi Company.jpg 633 × 480; 80 KB
  
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  Ducretet-Popov spark gap transmitter.png 1,218 × 811; 503 KB
  
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  Early Lecher line.png 985 × 503; 58 KB
  
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  Electropolis Mulhouse 154.JPG 1,600 × 1,200; 488 KB
  
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  Fessenden synchronous spark transmitter.jpg 1,956 × 1,335; 591 KB
  
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  FFU trx Stiff 1904.JPG 1,280 × 1,136; 143 KB
  
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  Gbgradio3.jpg 1,772 × 1,309; 1.23 MB
  
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  Griffin & George spark gap at MIT flea.agr.jpg 3,264 × 2,448; 5.13 MB
  
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  Guglielmo Marconi 1901 wireless signal-300x189.jpg 300 × 189; 19 KB
  
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  Guglielmo Marconi 1901 wireless signal.jpg 3,000 × 1,849; 1.06 MB
  
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  Guglielmo Marconi posing.jpg 3,118 × 3,461; 3 MB
  
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  Heinrich Hertz discovering radio waves crop.png 1,105 × 1,105; 228 KB
  
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  Heinrich Hertz discovering radio waves.png 1,136 × 1,764; 259 KB
  
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  Hertz drawing of his spark transmitter 1888.png 346 × 499; 21 KB
  
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  Hertz first oscillator.png 1,345 × 233; 14 KB
  
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  Hertz micrometer resonator.png 860 × 1,412; 84 KB
  
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  Hertz radio wave experiments - crossed polarization.png 393 × 234; 3 KB
  
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  Hertz radio wave experiments - parabolic antennas.png 495 × 268; 6 KB
  
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  Hertz radio wave experiments - polarization filter.png 401 × 488; 14 KB
  
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  Hertz radio wave experiments - refraction.png 387 × 201; 6 KB
  
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  Hertz spark gap transmitter and parabolic antenna.png 816 × 926; 130 KB
  
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  Hertz wireless transmitter (Rankin Kennedy, Electrical Installations, Vol V, 1903).jpg 459 × 350; 12 KB
  
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  Hertzian spark gap transmitter and receiver.png 594 × 241; 44 KB
  
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  Hertzian spark radio transmitter 1902.jpg 637 × 453; 91 KB
  
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  Hertzian wave apparatus - Augusto Righi 1897.png 709 × 415; 68 KB
  
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  Innsbruck-Museum Zeughaus-phone exhibition-morse code machine-01ASD.jpg 2,732 × 2,986; 477 KB
  
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  Jagadish Chandra Bose microwave apparatus.png 837 × 513; 46 KB
  
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  Leyden jars Nauen wireless telegraphy station 1908.jpg 1,544 × 1,160; 622 KB
  
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  Lodge spark oscillator 1894.png 237 × 256; 19 KB
  
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  Lodge spark transmitter1894.png 660 × 603; 117 KB
  
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  Marconi 1897 spark gap transmitter.jpg 429 × 286; 27 KB
  
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  Marconi and his wireless apparatus 1897.jpg 1,011 × 555; 176 KB
  
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  Marconi Carnarvon 300kW transatlantic spark transmitter 1919 - rotary spark dischargers.png 1,063 × 725; 486 KB
  
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  Marconi Carnarvon 300kW transatlantic spark transmitter 1919 - tuning coil.png 1,153 × 873; 667 KB
  
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  Marconi Model P-4 2 kW ship spark transmitter.jpg 1,123 × 1,164; 170 KB
  
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  Marconi operator aboard ship "Deutschland", at his instruments LCCN2014683102.jpg 5,785 × 4,204; 2.51 MB
  
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  Marconi operator aboard ship 'Deutschland', at his instruments LCCN2014683102-edited.jpg 948 × 677; 268 KB
  
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  Marconi parabolic xmtr and rcvr 1895.jpg 559 × 295; 79 KB
  
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  Marconi spark transmitter on SS Minnetonka 1902.jpg 627 × 591; 108 KB
  
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  Marconi Type E-2 500W ship spark transmitter.jpg 1,400 × 1,060; 316 KB
  
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  Marconi's first radio transmitter.jpg 924 × 1,372; 419 KB
  
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  Massie spark gap.jpg 640 × 480; 30 KB
  
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  Microwave Apparatus - Jagadish Chandra Bose Museum - Bose Institute - Kolkata 2011-07-26 4051.JPG 4,288 × 2,848; 5.76 MB
  
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  Modern Spark Gap Transmitter.jpg 4,624 × 2,600; 3.3 MB
  
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  Morseapparat-2.JPG 1,350 × 970; 142 KB
  
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  Murdock 1 kW rotary gap spark transmitter 1914.jpg 919 × 799; 87 KB
  
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  Navy NAA spark transmitter Arlington 1913.jpg 2,112 × 1,384; 621 KB
  
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  Navy radio pack set, view 1 of 2, 0.5 KW quenched gap, 1917 - New England Wireless & Steam Museum - East Greenwich, RI - DSC06667.jpg 5,472 × 3,648; 7.97 MB
  
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  Navy radio pack set, view 2 of 2, 0.5 KW quenched gap, 1917 - New England Wireless & Steam Museum - East Greenwich, RI - DSC06670.jpg 5,472 × 3,648; 8.79 MB
  
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  Oscillatore di Righi a quattro sfere - Museo scienza tecnologia Milano 09718.jpg 748 × 607; 83 KB
  
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  Oscillatore di Righi a quattro sfere - Museo scienza tecnologia Milano D0030.jpg 800 × 567; 85 KB
  
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  Oscillatore di Righi con riflettore parabolico - Museo scienza tecnologia Milano 08757 1.jpg 800 × 664; 85 KB
  
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  Oscillatore di Righi con riflettore parabolico - Museo scienza tecnologia Milano 08757.jpg 800 × 621; 61 KB
  
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  Oscillatore di Righi con riflettore parabolico - Museo scienza tecnologia Milano D0139 1.jpg 800 × 675; 91 KB
  
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  Oscillatore di Righi con riflettore parabolico - Museo scienza tecnologia Milano D0139.jpg 800 × 609; 86 KB
  
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  Post Office Engineers-colorized.jpg 1,024 × 707; 218 KB
  
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  Post Office Engineers.jpg 4,440 × 3,065; 1.76 MB
  
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  Powerful spark gap transmitter.png 688 × 866; 155 KB
  
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  Progress in Electronics 6c 1973 issue U.S. stamp.jpg 1,294 × 832; 397 KB
  
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  PSM V56 D0071 Photo of electrical lines emanating from the sending station.png 1,638 × 1,066; 379 KB
  
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  PSM V56 D0076 Photo of electric pulses.png 1,363 × 676; 37 KB
  
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  PSM V56 D0077 Photo of a pilot spark.png 1,284 × 798; 36 KB
  
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  PSM V63 D117 Various forms of marconi antennae.png 1,111 × 603; 55 KB
  
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  Quenched spark gap - cutaway drawing.png 682 × 402; 71 KB
  
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  Quenched spark gap 1915.jpg 905 × 557; 117 KB
  
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  Quenched spark transmitter - Nauen Radio Station, Nauen Germany 1921.jpg 823 × 607; 165 KB
  
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  Radio MARCONI.jpg 902 × 791; 572 KB
  
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  Refraction of Hertzian waves by a paraffin lens 1897.png 593 × 275; 17 KB
  
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  Refraction of Hertzian waves by paraffin prism.png 2,548 × 1,288; 25 KB
  
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  Righi spark gap.jpg 1,032 × 916; 98 KB
  
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  Rotary spark gap 1919.jpg 478 × 305; 28 KB
  
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  Rotary spark gap transmitter.jpg 700 × 450; 135 KB
  
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  Ship spark transmitter tuned circuit 1921.jpg 852 × 1,128; 223 KB
  
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  Small spark gap transmitter and coherer receiver.jpg 1,141 × 557; 151 KB
  
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  Small spark gap transmitter.jpg 788 × 676; 91 KB
  
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  Spark gap generator, Inishowen Museum - geograph.org.uk - 5811983.jpg 1,024 × 768; 352 KB
  
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  Spark gap transmitter bandwidth - 1.png 715 × 876; 119 KB
  
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  Spark gap transmitter bandwidth - 2.png 460 × 545; 46 KB
  
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  Spark gap transmitter bandwidth - 3.png 718 × 872; 114 KB
  
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  Spark gap transmitter bandwidth - A.png 722 × 863; 135 KB
  
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  Spark gap transmitter diagram (alt).png 7,000 × 7,000; 152 KB
  
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  Spark gap transmitter diagram.png 967 × 955; 51 KB
  
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  Spark gap transmitter.jpg 3,312 × 3,890; 4.14 MB
  
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  Spark gap wireless station 1910.jpg 684 × 557; 154 KB
  
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  SPARK Museum of Electrical Invention - interior 27 - spark transmitter - Radiguet & Massiot, France, c. 1900.jpg 4,288 × 2,848; 5.43 MB
  
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  Spark transmitter at Ambon Indonesia 1921.png 976 × 696; 496 KB
  
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  Spark-gap apparatus.png 1,097 × 1,109; 1.16 MB
  
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  Stamp US spark coil.jpg 360 × 230; 52 KB
  
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  Telefunken ship radio room 1919.jpg 853 × 1,011; 192 KB
  
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  Tesla Effect (Spark Gap Transmitter).png 744 × 887; 151 KB
  
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  Trasmettitore di Augusto Righi.JPG 1,600 × 1,200; 525 KB
  
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  TRX républic 1909.JPG 783 × 665; 96 KB
  
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  TSF chalutier 1922..jpg 1,280 × 894; 149 KB
  
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  TSF paquebot Asie (Compagnie des Chargeurs Réunis) 1919.jpg 950 × 1,248; 1,021 KB
  
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  Two-kilowatt rotary quenced gap from the March 1916 QST.png 766 × 495; 45 KB
  
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  Variometer antenna loading coil for spark transmitter 1920.jpg 520 × 605; 89 KB