audio tx

TX Four Square Antenna - A 220-ft tower that has five catenary lines, each about 500 feet long. Four of these lines, running NE, SE, SW, and NW support four 1/4-wavelength wire verticals used in a 160-meter four-square antenna.

2 Meter J-Pole design - J-Pole Antenna by K4TAX

JA0RUG DX Diary - DX Audio Clip and others Blog by JA0RUG

ARI Prato Italy - Online Repeater - Italian ARI PRATO Amateur Repeater 145.725 Mhz Live Audio Feed

Carteret County Public Safety Live Scanner - Carteret County NC Public Safety Live Scanner Audio Feed

Milwaukee Fire Dep. Audio Feed - City of Milwaukee Fire Department Live Audio Feed

Digimode Sounds - Audio recordings of popular and not yet so popular digimodes

Digital Modes Samples - Audio recording of many ham radio digital modes emissions. Sound samples of HF VHF digital signals samples and published by KB9UKD

Digital Modes Information Page - An overview of digital HF radio operating modes includes a sample audio recording of each digital mode by WB8NUT

Morse Code Sound Samples - G4UCJ morse code table with mp3 morse audio samples

Audio CW Filter - A very effective AF Adaptor, with built-in noise blanker and 30 Hz CW filter modules by PA0LQ

Making the Most of your PSK31 Signal - Adjusting audio output of your soundcard to obtain a perfect PSK signal from your transmission. A project to help you tuning your PSK31 emission.

Yaesu FT-897D PSK and RTTY Operation - Determining the audio input and output connections on the FT-897D.

Mods Kenwood TS-870 ACC2 Input - This mod flattens out the ACC2 audio input low frequency response

G4URH - Yaesu FT2000 Audio Settings - Yaesu FT-2000 Audio Settings 3 stage Parametric Equalizer Speech Processor OFF

FT-897D Audio processing and ALC operation - Audio processing and ALC in the FT-897D

EasyAudioStreamer  ^updated - EasyAudioStreamer is free windows software that allow you to easily stream to the network any audio source connected to any audio device available on your PC.

Frequency Response Plotter - Draw static response time of an audio system. Originally intended for loudspeakers tests, is also a great tool for looking at microphone equalisation.

Audio Kit for iPhone - Audio Kit is a collection of four iphone applications which are essential for those working in audio and sound. A real time Spectrum Analyser, a Scope to display waveforms, an SPL Meter, and a sine wave Signal Generator.

A Potpourri of Audio Amplifiers - A collection of audio amplifier projects by N1HFX

Yaesu DSP Settings for Heil Microphones - To achieve maximum audio quality it is important to adjust the DSP settings of your transmitter when using Heil microphones.

Multi-Four a VXO QRP Transmitter for HF bands - This transmitter has been designed for use on 20 30 40 and 80 m with 5W output

The Duet CW RTX - Design for a dual-band CW transceiver using the AD9834 Direct Digital Synthesizer

Kenwood TM-201 401 mod - Kenwood TM-201/401 Increased TX Audio, mod for microphone gain

Softrock SDR and Six Meters - DF9CY using Softrock RTX on 50 MHz