Category:Beat frequency oscillators
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device to convert Morse code radio signals into audible tones | |||||
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Subcategories
This category has only the following subcategory.
Media in category "Beat frequency oscillators"
The following 5 files are in this category, out of 5 total.
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Beat frequency oscillator "STI 4032" from German company Rohde und Schwarz (1944).jpg 2,500 × 1,500; 1.38 MB
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Beat frequency oscillator board.jpg 1,288 × 1,024; 369 KB
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D 1944 Rohde und Schwarz STT4032 Front Large.jpg 3,560 × 2,536; 1.87 MB
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Goldschmidt tone wheel.jpg 1,137 × 834; 201 KB
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