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Technical Reference
: Audio
Audio recording
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Audio Spectrum Analyzer - OscilloMeter
Audio Spectrum Analyzer for Real-time, FFT, OscilloScope, Frequency counter, voltmeter, noise and distortion meter, phase shift meter. Multi-Tone Sound Frequency Sweep Generator. White, pink noise.
Audio spectrum analyzer
Analyzes audio from 10 Hz to 20 kHz, input from microphone or wave file, Variable sample rates (8000 Hz, 11025 Hz, 22050 Hz, 44100 Hz) Variable transform sizes (1k, 2k, 4k, 8k) Upper and lower limits adjustable Continuous, averaged, peak hold
Soundcard Audio Tools and Toys
Soundcard audio tools and toys, experimental ideas and utilities. Signal Generator, Frequency-counter / instrument-tuner, Real-time Spectrum Analyser
Yaesu FT-1000D HiFi SSB Audio and Mods
Using Hi-Fi Audio with FT-1000. Includes many FT-1000D modifications too by K6JRF
Bluetooth Audio and Amateur Radio
Bluetooth headsets are very common with cell phone users. As such, many amateurs may already own a Bluetooth (BT) headset. So why not use it with amateur radio?
Build An Audio Speech Processor
When one operates at low power on SSB, speech processing becomes almost essential to get through the QRM. The circuit is a low cost speech processor that will perform well with a minimum of construction effort.
Audio Preamp
Easy circuit that provide good gain to weak audio signals
FT-897D Audio processing and ALC operation
Audio processing and ALC in the FT-897D
Hi-FI Audio with Yaesu FT-2000
Setup for the Yaesu FT-2000 by John K3UR
Transistor Audio Preamplifier Circuits
Design Guidelines for Bipolar Transistor Audio Preamplifier Circuits By Mike Martell N1HFX
Mic Pre Ampllifier
A microphone preamplifier schematic for hand-helds by ON6MU
Audio Links
12V powered Audio Amplifier
A 12V powered, 4x15 Watt quad audio amplifier
[ Hits: 392 | Votes: 0 | Rating: 0 ]
12W amplifier
ON6MU 12 Watt amplifier schematic
[ Hits: 546 | Votes: 2 | Rating: 8.5 ]
A fool-proof VOX
A circuit which had been used in many other application before The configuration described here ...
[ Hits: 1477 | Votes: 0 | Rating: 0 ]
A Potpourri of Audio Amplifiers
A collection of audio amplifier projects by N1HFX
[ Hits: 586 | Votes: 0 | Rating: 0 ]
A switched Capacitor Audio Filter - AA8C
Here is a rather nice audio filter for use with Ham Radio gear It features ...
[ Hits: 73 | Votes: 0 | Rating: 0 ]
An Audio Selection Panel in the Shack - PE2ER
On this page you will find one of my designs An Audio Selection Panel ASP ...
[ Hits: 139 | Votes: 2 | Rating: 7.5 ]
Analyzing SSB Signal Quality in CQ WW Contest - OH6LI
This article investigates SSB signal quality during the CQ WW 2015 SSB contest It highlights ...
[ Hits: 42 | Votes: 0 | Rating: 0 ]
Audio Cables - wadarc
Article with answers to common questions as what cable types to user cable length how ...
[ Hits: 269 | Votes: 0 | Rating: 0 ]
Audio Compressor for SSB
Build an audio Processor and clipper optimised for SSB transmitter
[ Hits: 1459 | Votes: 1 | Rating: 1 ]
Audio CW Filter
A very effective AF Adaptor with built in noise blanker and 30 Hz CW filter ...
[ Hits: 1523 | Votes: 3 | Rating: 5.67 ]
Audio filters and speakers
Review of common audio speakers for mobile setups
[ Hits: 535 | Votes: 0 | Rating: 0 ]
Audio Mixer
An homebrew audio mixer for the ham shack by GW6ITJ
[ Hits: 750 | Votes: 2 | Rating: 2 ]
Audio Preamp
Easy circuit that provide good gain to weak audio signals
[ Hits: 3821 | Votes: 2 | Rating: 3.5 ]
Audio processor for SSB transceiver
This circuit consists of microphone amplifier and a high pass filter Suitable to improve signal ...
[ Hits: 1448 | Votes: 1 | Rating: 1 ]
Audio spectrum analyzer - WD6CNF
pop
Analyzes audio from 10 Hz to 20 kHz input from microphone or wave file Variable ...
[ Hits: 30298 | Votes: 54 | Rating: 3.82 ]
Audio Spectrum Analyzer - OscilloMeter - Oleg Ya. Shmelyoff
pop
Audio Spectrum Analyzer for Real time FFT OscilloScope Frequency counter voltmeter noise and distortion meter ...
[ Hits: 89804 | Votes: 328 | Rating: 6.2 ]
Automated Voice announcements over RF - VE6lk
Automated voice announcements project built to have an automated way to deliver club announcements via ...
[ Hits: 64 | Votes: 1 | Rating: 10 ]
Bass EQ Pre Amp
A Bass Eq Pre amplifier for high impedance PU by ON6MU
[ Hits: 450 | Votes: 1 | Rating: 10 ]
Bluetooth Audio and Amateur Radio
Bluetooth headsets are very common with cell phone users As such many amateurs may already ...
[ Hits: 4245 | Votes: 10 | Rating: 6.6 ]
Build An Audio Speech Processor
When one operates at low power on SSB speech processing becomes almost essential to get ...
[ Hits: 4090 | Votes: 13 | Rating: 7.3 ]
Communication Speakers - K3DAV
Have you searched and searched for a good speaker for your ham radio That perfect ...
[ Hits: 553 | Votes: 3 | Rating: 5.67 ]
Design Guidelines for JFET Audio Preamplifier Circuits
Design Guidelines for JFET Audio Preamplifier Circuits By Mike Martell N1HFX
[ Hits: 646 | Votes: 4 | Rating: 1 ]
Designing Op Amp Audio PreAmplifiers
Design guidelines for Op Amp audio preamplifier circuits by Mike Martell N1HFX
[ Hits: 1644 | Votes: 4 | Rating: 3.25 ]
DIY Ham Radio Loudspeaker - PA0NHC
An interesting article on how build an optimal sounding communications loudspeaker capable to optimize sound ...
[ Hits: 526 | Votes: 0 | Rating: 0 ]
DSP Speaker project
Build this noise reducing system to enhance audio of your speaker A project by kg4jjh ...
[ Hits: 591 | Votes: 0 | Rating: 0 ]
External Audio Equalizers - K3DAV
An excellent guide on choosing external audio equalizers by K3DAV
[ Hits: 381 | Votes: 0 | Rating: 0 ]
Flex Radio Power SDR Transmit Audio Settings
AB4BJ optimizing audio settings on the flex 5000A and heil microphones
[ Hits: 493 | Votes: 1 | Rating: 10 ]
FT-726 AUDIO Modifications
Throughput improvement for the FT726R - Tapr PSK modem
[ Hits: 816 | Votes: 0 | Rating: 0 ]
FT-817 Audio Speech Compressor: Boosting Signal Power with SSM2165 - AD5X
Designed for the FT 817 this audio speech compressor centered on the Analog Devices SSM2165 ...
[ Hits: 60 | Votes: 0 | Rating: 0 ]
FT-897D Audio processing and ALC operation
Audio processing and ALC in the FT-897D
[ Hits: 2702 | Votes: 4 | Rating: 3 ]
Heil Microphones DSP Settings
How adjust DSP settings for your trasmitter when using Heil Sound microphones
[ Hits: 521 | Votes: 1 | Rating: 1 ]
Hi-FI Audio with Yaesu FT-2000
Setup for the Yaesu FT-2000 by John K3UR
[ Hits: 1836 | Votes: 0 | Rating: 0 ]
Icom DSP Settings and Pin Connections
ICOM audio DSP settings and pin connections for heil sound headphones
[ Hits: 733 | Votes: 1 | Rating: 1 ]
Improving the audio on the ICOM IC-27 - wb4kdi
Make an otherwise fine radio even better change one resistor and one capacitor in the ...
[ Hits: 41 | Votes: 0 | Rating: 0 ]
Improving transmission Intellegibility
Improving the intelligibility of an SSB transmissions What is important when processing speech Which bands ...
[ Hits: 555 | Votes: 1 | Rating: 6 ]
Integrated Circuit Audio Amplifiers
Circuit designs for IC audio amplifiers by N1HFX
[ Hits: 422 | Votes: 0 | Rating: 0 ]
JRC NVA-88 Modification - JRC
Adding 2 RCA inputs 1 high impedance filtered audio output RCA 3 3 HIGH PASS ...
[ Hits: 55 | Votes: 0 | Rating: 0 ]
Kenwood DSP Settings and pin connections
Kenwood radios audio DSP settings for Heil Sound headphones
[ Hits: 677 | Votes: 2 | Rating: 2.5 ]
Low Pass Audio Filter
440 Hertz peaked low pass audio filter experiments
[ Hits: 919 | Votes: 1 | Rating: 7 ]
Low Power LF Amplifier
ON6MU Low Power amplifier
[ Hits: 855 | Votes: 1 | Rating: 8 ]
Mic Pre Ampllifier
A microphone preamplifier schematic for hand-helds by ON6MU
[ Hits: 1672 | Votes: 3 | Rating: 6 ]
Microphone sensivity calculators
Mic online calculator , Microphone Dynamic Range Calculator, Microphone Sensitivity Calculator
[ Hits: 420 | Votes: 4 | Rating: 3.75 ]
N2RIT audio chain
Audio setup at N2RIT built around the Yaesu FT 950 abd the Heil Sound PR ...
[ Hits: 642 | Votes: 0 | Rating: 0 ]
No More Splatter
Improving your own signal quality by GM3SEK
[ Hits: 499 | Votes: 0 | Rating: 0 ]
RF Speech Processor - Dr Bora Jagodic
RF Speech Processor project with complete schematic by Jagodic YU1OXB
[ Hits: 858 | Votes: 2 | Rating: 9.5 ]
Setting Up A Record and Playback System - NU9N
Sending the Audio from the Receiver to the Recorder from the Recorder to the EQ ...
[ Hits: 289 | Votes: 0 | Rating: 0 ]
Soundcard Audio Tools and Toys
Soundcard audio tools and toys experimental ideas and utilities Signal Generator Frequency counter instrument tuner ...
[ Hits: 14615 | Votes: 16 | Rating: 7.75 ]
Speaker placement - Delta Alfa
Guidelines for optimal speaker placement inside our ham radio shacks
[ Hits: 621 | Votes: 0 | Rating: 0 ]
Speech Intelligibility
Articles published by the Radio Society of Great Britain basic principles construction of a simple ...
[ Hits: 442 | Votes: 1 | Rating: 10 ]
The CW Flea: Modern Morse Transmitter with Arduino - KB9RLW
Reviving the spirit of early ham radio experimentation the CW Flea is a contemporary Morse ...
[ Hits: 92 | Votes: 2 | Rating: 3.5 ]
Transistor Audio Preamplifier Circuits
Design Guidelines for Bipolar Transistor Audio Preamplifier Circuits By Mike Martell N1HFX
[ Hits: 1816 | Votes: 3 | Rating: 4.33 ]
Transmit Audio Settings on the Kenwood TS-990
Optimizing audio settings on the Kenwood TS-990 by AB4BJ
[ Hits: 727 | Votes: 1 | Rating: 1 ]
Yaesu DSP Settings and Pin Connections
Yaesu DSP audio settings for Heil Sound headphones
[ Hits: 646 | Votes: 0 | Rating: 0 ]
Yaesu FT-1000D HiFi SSB Audio and Mods
Using Hi-Fi Audio with FT-1000. Includes many FT-1000D modifications too by K6JRF
[ Hits: 4820 | Votes: 9 | Rating: 5.44 ]
Yaesu FT-817 Audio Enhancement: Heathkit-inspired Homebrew Project - KG4JJH
Inspired by Heathkit author aimed to enhance his Yaesu FT 817 with audio and RF ...
[ Hits: 81 | Votes: 1 | Rating: 2 ]
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