H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
H04B1/06—Receivers
H04B1/16—Circuits
H04B1/20—Circuits for coupling gramophone pick-up, recorder output, or microphone to receiver
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Engineering & Computer Science
(AREA)
Computer Networks & Wireless Communication
(AREA)
Signal Processing
(AREA)
Developing Agents For Electrophotography
(AREA)
Photoreceptors In Electrophotography
(AREA)
Electrical Discharge Machining, Electrochemical Machining, And Combined Machining
(AREA)