Category:Carbon microphones

Subcategories

This category has only the following subcategory.

Media in category "Carbon microphones"

The following 45 files are in this category, out of 45 total.

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  Actor portraying Alexander Graham Bell in an AT&T promotional film (1926).jpg 614 × 504; 85 KB
  
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  Carbon amplifier radio receiver 1919.png 552 × 232; 18 KB
  
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  Carbon button microphone 1916.png 745 × 603; 102 KB
  
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  Carbon button microphone cutaway.png 727 × 874; 134 KB
  
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  Carbon Button Microphone.JPG 640 × 480; 47 KB
  
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  Carbon microphone zh.svg 800 × 1,000; 62 KB
  
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  Carbon microphone, c. 1920s, Ellis Electrical Laboratories - Museum of Science and Industry (Chicago) - DSC06626.JPG 2,886 × 3,927; 5.52 MB
  
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  CKUA Microphone, National Music Centre.jpg 2,448 × 3,264; 2.87 MB
  
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  Coal microphone.jpg 827 × 610; 51 KB
  
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  Ericsson carbon microphone opened.jpg 2,117 × 1,438; 650 KB
  
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  First Phone.jpg 436 × 303; 42 KB
  
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  First US Navy radiotelephone.jpg 1,356 × 2,114; 329 KB
  
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  George Olsen at WJZ with double button microphone 1926.jpg 680 × 830; 98 KB
  
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  Hughes carbon microphone.jpg 217 × 346; 16 KB
  
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  Hughes carbon microphone.png 721 × 212; 27 KB
  
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  Hughes carbon rod microphone 1878.png 585 × 495; 62 KB
  
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  HughesMicrophone.gif 330 × 278; 6 KB
  
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  Kellogg Candlestick Telephone.JPG 2,700 × 3,031; 899 KB
  
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  Kohlemikrofon Alois Zettler.jpg 2,000 × 1,333; 362 KB
  
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  Kohlemikrofon-sv.svg 800 × 1,000; 64 KB
  
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  Kohlemikrofon.png 153 × 303; 116 KB
  
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  Kohlemikrophon.jpg 830 × 924; 88 KB
  
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  Kohlemikrophon2.jpg 1,254 × 939; 153 KB
  
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  Kohlenmikrofon SK.svg 800 × 1,000; 46 KB
  
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  Marconi Reisz microphone.jpg 1,536 × 2,304; 1.68 MB
  
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  Meyers b6 s0155 b1.png 374 × 249; 11 KB
  
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  Meyers b6 s0155 b2.png 285 × 567; 56 KB
  
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  Meyers b6 s0155 b3.png 229 × 377; 36 KB
  
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  Micro charbon.png 480 × 600; 48 KB
  
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  Microphone - Bayernhof Museum - DSC06319.JPG 3,154 × 4,453; 3.33 MB
  
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  Mikrofon szén.png 553 × 280; 16 KB
  
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  MikrofonGrundig1.JPG 612 × 975; 160 KB
  
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  MikrofonGrundig2.JPG 544 × 665; 84 KB
  
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  Navy carbon radio amplifier 1915.jpg 737 × 420; 52 KB
  
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  Portable 5W public address system 1929.jpg 758 × 572; 40 KB
  
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  Snitt genom en Western electrics kolkornsmikrofon med dubbelsidigt verkande membran, Nordisk familjebok.png 919 × 685; 64 KB
  
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  Swedish patent 1828 Kolpulvermikrofon.pdf 1,240 × 1,753, 4 pages; 199 KB
  
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  Swedish patent 5280 Anordning vid kolkornmikrofoner.pdf 1,240 × 1,753, 2 pages; 73 KB
  
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  Telefon Kohlemikrofon.jpg 800 × 798; 102 KB
  
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  Telefunken arc radiotelephone.jpg 1,095 × 2,135; 322 KB
  
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  The practical telephone handbook and guide to the telephonic exchange (1906) (14569424970).jpg 1,420 × 536; 100 KB
  
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  Two double button carbon microphones.jpg 245 × 225; 16 KB
  
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  Uhlíkový mikrofon.jpg 618 × 217; 16 KB
  
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  Western Electric double button carbon microphone.jpg 939 × 1,319; 420 KB
  
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  Western electrics rundradiomikrofon i sitt skyddande fodral, Nordisk familjebok.png 1,552 × 1,818; 279 KB