Category:Tuned radio frequency circuits

Subcategories

This category has the following 3 subcategories, out of 3 total.

Media in category "Tuned radio frequency circuits"

The following 46 files are in this category, out of 46 total.

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  1920s TRF radio manufactured by Signal.jpg 3,088 × 2,128; 3.16 MB
  
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  Antique 4 tube radio front at MIT flea.agr.jpg 3,172 × 1,910; 4.37 MB
  
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  Antique 4 tube radio qtr at MIT flea.agr.jpg 2,801 × 2,206; 5.09 MB
  
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  Antique 4 tube radio top at MIT flea.agr.jpg 3,232 × 1,668; 3.95 MB
  
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  Atwater Kent Type TA detector and 2 stage AF amplifier - Bayernhof Museum - DSC06297.JPG 5,472 × 3,648; 4.84 MB
  
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  Blaupunkt (Ideal) VIII tube radio, 1928 (2360722747).jpg 3,072 × 2,304; 3.1 MB
  
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  D Telefunken 1926 Telefunkon 3 26a.jpg 634 × 700; 120 KB
  
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  Dowding & Rogers 24 tube radio receiver.jpg 623 × 736; 116 KB
  
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  Five tube TRF receiver circuit 1924.png 1,002 × 331; 40 KB
  
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  Geradeaus empf.svg 1,488 × 391; 30 KB
  
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  Gloria-SW3-schaltung.jpg 622 × 416; 82 KB
  
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  Grebe CR-12 Radio, 1920s.jpg 1,066 × 1,322; 327 KB
  
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  Kramolin Pentatron RDV45 single-tube radio, 1927 (2360723973).jpg 3,072 × 2,304; 3.23 MB
  
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  Leutz Phantom 9 tube TRF receiver.jpg 657 × 332; 56 KB
  
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  Maxwell Pupil.jpg 800 × 548; 95 KB
  
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  Museo de la Ciudad, Defensa 227 - Muestra sobre radiodifusión.jpg 2,472 × 3,296; 990 KB
  
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  Obr2ppz.jpg 750 × 350; 38 KB
  
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  Obr3ref.jpg 750 × 470; 49 KB
  
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  Obr4aud.jpg 750 × 350; 39 KB
  
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  Obr5ppp.jpg 1,280 × 400; 64 KB
  
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  PensacolaAug081920sRadio.jpg 2,089 × 2,023; 1.35 MB
  
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  PensacolaAug081920sRadioHeater.jpg 2,816 × 2,112; 1.39 MB
  
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  Radio receiver 05.jpg 1,600 × 1,200; 763 KB
  
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  Radio receiver 06.jpg 1,293 × 970; 590 KB
  
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  Radio SH.JPG 2,592 × 1,944; 1.46 MB
  
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  RadioBaquelita314.jpg 3,888 × 2,592; 3.34 MB
  
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  Radiomuseum (31711813798).jpg 4,032 × 3,024; 1.99 MB
  
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  Radiomuseum (44859084974).jpg 3,024 × 4,032; 2.22 MB
  
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  Rundfunkempfänger RE 123 Lorenz 1923.jpg 2,000 × 1,333; 177 KB
  
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  Siemens Rfe22 tube radio, 1928 (2361555086).jpg 3,072 × 2,304; 3.01 MB
  
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  Simple TRF receiver block diagram.svg 1,403 × 501; 11 KB
  
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  TFKG.jpg 1,286 × 1,088; 248 KB
  
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  TRF Schematic.jpg 2,201 × 778; 237 KB
  
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  Tuned radio frequency (TRF) receiver block diagram 2.svg 2,191 × 526; 18 KB
  
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  Tuned RF amplifier stage.png 1,972 × 1,620; 18 KB
  
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  Tuned RF power amplifier.jpg 825 × 1,085; 158 KB
  
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  Tuning a TRF radio 1925.jpg 956 × 656; 207 KB
  
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  Vintage All-American-Mohawk One Dial Battery Powered Radio, Six Tubes, Circa 1920s (15600430739).jpg 1,838 × 1,707; 839 KB
  
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  Vintage All-American-Mohawk One Dial Battery Powered Radio, Six Tubes, Circa 1920s (15762586376).jpg 2,756 × 2,663; 2.12 MB
  
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  Vintage Atwater Kent Breadboard Radio, Circa 1920s (9176456895).jpg 1,154 × 535; 165 KB
  
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  Vintage Atwater Kent Breadboard Radio, Circa 1920s (9178625618).jpg 1,308 × 629; 241 KB
  
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  Vintage Gloritone Model 27 Cathedral-Tombstone Style Vacuum Tube Radio, AM Band, TRF, Circa 1930 (14663394535).jpg 1,608 × 2,023; 899 KB
  
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  Vintage Grebe MU-1 Synchrophase With Gold-Plated Escutcheons, Battery Operation, Circa 1925 (9117793001).jpg 4,344 × 2,048; 2.79 MB
  
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  Vintage Grebe MU-1 Synchrophase With Gold-Plated Escutcheons, Battery Operation, Circa 1925 (9120006960).jpg 4,608 × 3,456; 4.09 MB
  
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  Woman lying on big radio at convention 1923.jpg 1,213 × 937; 214 KB
  
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  Zn414-internal.png 956 × 284; 14 KB