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audio filter

35 links about audio filter on dxzone.com

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 Site listings
Manufacturers : Filters
  • W3NQN CW Audio Filter - Maker of passive cw audio filter kit designed in the 1980s
    [ Hits: 113 | Votes: 0 | Rating: 0.00 ]
Operating Modes : Mobile Operating Modes : Morse code
  • Audio CW Filter - A very effective AF Adaptor, with built-in noise blanker and 30 Hz CW filter modules by PA0LQ
    [ Hits: 1031 | Votes: 3 | Rating: 5.67 ]
Software : Circuit Design
  • EvoSpice - A numerical optimizer (solver) for LTSpice IV. Uses a fast evolutionary algorithm. You can use EvoSpice to design high efficiency power supplies, audio filters, low noise RF amplifiers and an endless list of other applications
    [ Hits: 180 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Audio
  • Low Pass Audio Filter - 440 Hertz peaked low pass audio filter experiments
    [ Hits: 590 | Votes: 1 | Rating: 7.00 ]
Technical Reference : Homebrew
  • A CW Sidetone Bypass - A CW sidetone bypass for the NESCAF audio filter, a small and low cost circuit that works great.
    [ Hits: 127 | Votes: 0 | Rating: 0.00 ]
Technical Reference : QRP Projects
  • QRP NESCAF Kit - The New England QRP NESCAF Kit Switched Capacitor Audio Filter by N5ESE
    [ Hits: 245 | Votes: 0 | Rating: 0.00 ]
  • Switched Capacitive Audio Filter - NEScaf: A Switched Capacitive Audio Filter
    [ Hits: 234 | Votes: 0 | Rating: 0.00 ]
Technical Reference : QRP Projects : QRP CW Transceiver
  • 20m CW QRP Transceiver - The direct-conversion receiver uses an audio-based automatic gain control, an LC tone filter, and a 100-kHz crystal for frequency alignment. The same VFO is used for transmitting and receiving by DC1YB
    [ Hits: 1521 | Votes: 5 | Rating: 1.20 ]
Technical Reference : Receivers
  • 30 m Band Direct Conversion Receiver - The direct conversion receiver described consists of only a bandpass filter, mixer IC, VFO and audio filter. With only 22 parts, this simple circuit should take a few hours at the weekend to construct.
    [ Hits: 431 | Votes: 1 | Rating: 4.00 ]
  Result Page:  [prev] 1 2
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