audio filter

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Search Results for "audio filter"

37 links

Manufacturers : Antenna Analyzers
  • Timewave - Sells leading-edge voice and digital communications products to the world-wide military, government, industrial, and amateur radio marketplaces. Bluetooth Remote Audio/PTT, Rig Controller with Audio & PTT , HamLinkUSB Rig Control, Noise filtersm antenna analyzers, Multimode Data Controller, TNC, Packet Radio Terminal Node Controller. USB2RS232
    [ Hits: 3588 | Votes: 3 | Rating: 5.33 ]
Manufacturers : Antenna Switches
  • MFJ Enterprises  pop - MFJ manufacturer of ham radio antenna products, antenna tuners, antenna analyzers, morse code & CW, SWR wattmeters, antenna accessories , power supplies, audio filters, TVI filters, baluns, coax switches and more
    [ Hits: 42263 | Votes: 27 | Rating: 7.28 ]
Manufacturers : Filters
  • W3NQN CW Audio Filter - Maker of passive cw audio filter kit designed in the 1980s
    [ Hits: 232 | Votes: 0 | Rating: 0.00 ]
Manufacturers : QRP Kits
  • Micro908 Kit - A re-usable control & computing platform for antenna measurement, PSK31 digital modems, audio filtering, signal source & VFO, memory keyer by AMQRP
    [ Hits: 1400 | Votes: 1 | Rating: 10.00 ]
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: 1200 | Votes: 3 | Rating: 5.67 ]
Radio Equipment : Receivers : Icom IC-R20
  • Icom IC-R20 discriminator mod - An illustrated modification for the Icom IC-R20 receiver to locate and use the unfiltered audio.
    [ Hits: 246 | Votes: 1 | Rating: 9.00 ]
Shopping and Services : Regional : USA
  • Ham Supply - Ham Supply continue to manufacturer the fine Idiom Press electronic keyer, audio filter and other Ham Radio related products
    [ Hits: 194 | Votes: 1 | Rating: 10.00 ]
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: 304 | Votes: 0 | Rating: 0.00 ]
Software : Filter Design
  • Filtroid - Filtroid is an extremely easy-to-use program for synthesizing microwave filters. It can be used to design practically all filter types from audio to microwave frequencies as well as amplitude and delay equalizers and attenuators.
    [ Hits: 2256 | Votes: 1 | Rating: 3.00 ]
Technical Reference : Audio
  • Audio processor for SSB transceiver - This circuit consists of microphone amplifier and a high pass filter. Suitable to improve signal readability.
    [ Hits: 1269 | Votes: 1 | Rating: 1.00 ]
  • Low Pass Audio Filter - 440 Hertz peaked low pass audio filter experiments
    [ Hits: 779 | 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: 311 | 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: 352 | Votes: 0 | Rating: 0.00 ]
  • Switched Capacitive Audio Filter - NEScaf: A Switched Capacitive Audio Filter
    [ Hits: 343 | Votes: 0 | Rating: 0.00 ]
Technical Reference : QRP Projects : QRP CW Transceiver
  • 20m CW QRP Transceiver - Schematic diagram of a direct-conversion receiver that 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
    [ Hits: 1839 | Votes: 6 | Rating: 1.83 ]
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: 559 | Votes: 1 | Rating: 4.00 ]
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