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How to make an APRS IGATE using Linux, soundmodem and aprx by HA2NON

Yaesu FT 1000 MP to sound blaster card interface by Mark Marsden G4AXX

This voice-keyer-interface connects between a Yaesu FT1000MP and a PC's sound card & COM port. It can be used as a voice-keyer with Contest Voice Blaster and as a voice-keyer and CW-keyer with Writelog.

Located in the Owen Sound,Ontario area. Meetings are the 4th Tuesday of the month except for summer.

Preview the waterfall signature of various digital signals and listen to the sound of the digital modes. Learn about the bandwidth requirements and why a linear transmitter path is critical to successful and correct use of many modes on the amateur bands by W1HKJ

Some sound samples of received signals mainly on VHF-band

Dedicated to 50MHz and 144MHz. Online 2m and 6m logs. Real Audio sound clips of Tropo, Aurora, Sporadic E, Meteor Scatter, TEP and F2 Propagation.

This article contains notes on installation of a Roger Beep for an Icom IC7000 transceiver for use with a Heilsound Traveller headset.

Speakers for Amateur Radio, 2-Way Radio, Shortwave and Scanner listening

The system consists of a pair of Morse practice oscillators connected by a piece of two-conductor cable. Pressing the key on one unit produces a sound in both units by Peter Parker VK3YE -

Award-winning MP3 Recorder software for Windows 7 and Windows 8 will capture streaming audio without using Stereo Mix feature.

Sounds from the 136 kHz band

Interfacing ICOM radios with PC soundcard by W8WWV

A hombrew QRP transceiver for 40 meter band with many pictures, circuit and sound recording of some QSOs made with this Rig consisting of 5 transistor and one chip.

Decibels: dB, dBA, dBC, dBV, dBm and dBi? What are they all? How are they related to loudness, to phons and to sones? This page describes and compares them all and gives sound file examples.

Sounds of the hf digital radio modes

Free windows program by G3PPT that permits RTX of FeldHell

Computer Control and Soundcard Interface for the Icom IC 706

Italian ham radio dealer for Icom Array Solutions hyt mfj force12 heil-sound yaesu spiderbeam pkw ameritron acom palstar.

Yaesu FTDX3000 Sound card digital modes setup using internal USB interface

Accurate calibration of your receiver and sound card is necessary for good results with the weak signal modes in use at LF. Modern receivers with master oscillators that are synthesized to provide all conversion frequencies greatly simplify the process. This article describes a method of making the necessary measurements and adjustments to an ICOM R75 receiver and a sound card, using the ARGO software

MacOSX real-time precision signal / waveform generator. Uses native Mac sound Out capabilities.

slowrx is a Linux shortwave listener tool for receiving SSTV using a sound card by OH2EIQ.

Using a PC with soundcard as a VLF receiver, how to use your PC as a receiver for narrow-band signals in the VLF radio spectrum by DL4YHF

MP3 and Wav files of some stations recorded on HF anc VHF bands by K9MU

MyHamPlace is a online amateur radio shop based in China dealer for Heilsound, Elecraft, MFJ, Yaesu , Kenwood and other popula ham radio brands

A simple PSK31/digital interface which can connect your transceiver to a PC soundcard for digital modes.

Topband and DX recordings and sound files on 160 meters band

The PA2S Tape Archives. Many RealAudio sound clips of 50 MHz DX contacts, recorded during solar cycle 21 and 22.

Homebrew your PC sound card to radio interface with this circuit obtained from the pages of Ernie Mills WM2U.

Microhams is a dynamic organization of hams in the Puget Sound area. The club includes a broad range of people from our local tech industry who participate in just about every aspect of our hobby.

Noise Meter software for the noise meter tool by G8KBB that measure noise using a PC sound card and calculate noise figures by means of a calibrated noise source.

On line shop in Greece for amateur radio products, electronics, DAB Radio and GPS. Dealer for popular amateur radio brands, heil sound, kenwood, MFJ and more

Practival project that contains two isolation transformers, one for AF from the tranciever to the line in on a soundcard, and one from the audio out of the soundcard back to the mic / data input of the radio. Both of which are variable inside the interface via two preset resistors.

Modifications to the Tigertronics Signalink USB sound card

Computer to transceiver sound card interfacing by VK2QW

iSpectrum is a free spectrum analyzer for MacOS that allows you to display live audio in a standard frequency plot, waterfall display or in a stereo oscilloscope view. Used by ham radio operators, audiofiles, musicians, and Sound Technicians.

ICOM audio DSP settings and pin connections for heil sound headphones

This wiki is intended to help identify radio signals through example sounds and waterfall images. Most signals are received and recorded using a software defined radio

Sonogram is a highly flexible audio spectrum analyzer for the analysis of sound, music and speech signals in the frequency-domain using different algorithms.

Operates Singapore's largest radio network with 11 FM stations and 3 shortwave stations providing sound entertainment and up-to-the-minute news and information locally and internationally.

Sorted by Intermodulation. Best receiver first. This is a measure of how badly a close-spaced signal will trash your receiving with spurious signals or splatter sounds,

Soundmodem is a free software defined dual-port Packet-Radio TNC that implement a soundcard as a modem and supports AX.25 protocol. Soundmodem has been tested on Windows XP, Vista, 7, 8, 10 and has proved stable in operation. The Soundmodem may be used to build EMCOMM, APRS, BBS, Node station, for satellites

Kenwood radios audio DSP settings for Heil Sound headphones

From connectivity for the home or small office and home theater cabling solutions to power management and protection as well as home and office sound and video solutions, lashen electronics has the tools and technology you need to do the job right.

October 2003 QST article on working digital mondes with sound card interfaces

Connecting and configurig an USB Sound Card key to the raspberry Pi to allow digital mode decoding and remote rig applications

Audio setup at N2RIT built around the Yaesu FT-950 abd the Heil Sound PR-781 an ultraflex PRO EX3200

Yaesu DSP audio settings for Heil Sound headphones

Audio Repeater is a windows application tha allows you to transfer, transmit, sounds from an input audio endpoint or device to an output one Playback. Audio transfer can be performed in any PCM audio format supported by Windows. KS version communicates directly with audio driver, bypassing all additional Windows audio processing