Search results

NDBfinder allows you to use your PC and soundcard to receive, detect, identify and log NDBs (Non Directional Beacons used for maritime and aeronautical navigation)

MorseMaker is an up-to-date replacement for the Morse Machine shown further down this page. It has been re-written using a different programming language and is now entirely 'stand-alone' requiring no run-time support files. This version also works with Windows XP and can use the soundcard but please note that, unlike its predecessor, it does not split the alphabet into smaller 'learning' blocks and does not incorporate the Morse reader.

Proppy: Online HF propagation predictions using the ITU Recommendation P.533-13 Propagation Prediction Application.

This circuit provides an interface between the Yaesu 920 transceiver and IBM computer sound card which allows data transfer and control of PSK31, RTTY, KEYBOARD CW, and SSTV modes for Amateur Radio

Microphones, headsets and accessories for amateur radio and professionals

Setting up and testing a sound card packet radio interface by KD5ZUG

A powerpoint presentation of the D-STAR operating mode by K7VE includes d-star sound samples

Article on PC to radio interfacing by Paul Umbdenstock, WA1VOA

Have you ever wanted to listen in on a serious SO2R DX contest effort? hear what the low bands sound like from New England? enjoy a contest without having access to a radio? This is your chance!

Morse Pilup Audio tapes available also in Real Audio format.

Learn the Morse Code. Learn from random text or simulated QSO (contact) sources. Create character sequences that you find difficult. Compare your results with what the program sent and view error statistics. Take simulated tests. Sound card not essential. Evaluation version not time limited.

A Simple Serial and Sound-Card Interface for the Yaesu FT-857D

Microphones, accessories and data packet pin connection schematics for Yaesu Radios with initial settings of yaesu Parametric EQ and HEIL PR Microphones

SignalGen is a free (GPL) Linux (Xwindows GUI-based) utility that generates relatively low frequency signals with the use of a PC sound card. It is an entirely suitable replacement for a hardware signal generator if one doesn't require signals of a frequency higher than about 50 KHz. SignalGen creates any frequency between a fraction of one Hertz and an upper limit determined by your sound card's capabilities.

Chip64 mp3 file

Windows open source packet radio decoder. Decodes AFSK1200, AFSK2400, HAPN4800, and FSK9600 packet data with a radio connected to your pc sound device.

This program demodulates the telemetry data signal transmitted by the AO-40 satellite (aka Phase III-D) using the PC sound card

This is a packet radio software developed for amateur radio operators to provide IP communications. You can chat, send/receive e-mail, surf the web and so on via radio depending on your bandwidth. You don't need a TNC. You might have all of TNC features via SoundCard using SoundModem.

Gritty it is a Freeware RTTY decoder for Windows XP/7/8, it decodes a single signal in the 3-kHz audio coming from the transceiver via a soundcard, just like any other RTTY program.

Information and digital audio samples of various modem modulation types

The KK7UQ computer to radio interface, sound card interfaces, IMD meters interface products

Few recordings of difficult qso's

Several files with examples of sounds from digital radio modes on short wave. PSK, RTTY Hellschreiber MFSK FSK Sitor

Generates dial tones using the Soundcard. A neat tool for sending out short sequences of DTMF tones.

Audio and waterfall images of some sounds found on the RF spectrum

Sounds of Space Weather by S. McGreevy, N6NKS

PTT and soundcard interface schematic by ON6MU

Real audio sounds clips

IC820H or other Icom Radios Soundcard interface for VHF EME use by DF9CY

The Peaberry SDR is the first and only do-it-yourself transceiver that doesn't require adding sound cards to your computer.

Need to interface both a TNC and the computer soundcard? This is a ICOM 756PRO ACC1 audio/keying/FSK interface by WA0SXV

VoiceKeyDeluxe (VKD) will convert your sound card into a powerful and versatile digital voice keyer for contest or EME operations by N7QJP

Useful pages of longwave operations, includes a lot of reference files, beacons list, sounds and pictures

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

Sound Byte is a voice keyer for contests as well as general ham radio use. Windows and Mac, commercial by Black Cat Systems

Real Audio files containing interesting examples of VHF DX propagation from Sydney, Australia

Echolink, EQSO, Echostation, SSTV, WEFAX, PSK-31 other digital sound card modes

This interface is intended to be used with all the popular digital modes like PSK31, RTTY, Olivia, etc., which modulate a continuous carrier.

Amateur Radio Projects & Kits for homebrewers, includes DDS,sound card interface,programmers, hamcom, frequency counter, RF Power Meter, modems and more.

Description, frequencies and sound samples of most popular amateur radio digital modes by DG8FBV

DOS Hellschreiber radio program by G3PPT

Generates Morse tones using the Soundcard. A neat tool for sending out short sequences of Morse tones.

Beacons recorded audio files by kl7fdq

The SDR-908 is a software defined radio designed specifically for portable use, without the bother of being tethered to a PC or soundcard for the modulation/demodulation processing performed in this kind of radio.

A morse tutor that drives any Linux supported soundcard.

DarkIce is a live audio streamer. It records audio from an audio interface (e.g. sound card), encodes it and sends it to a streaming server. Works on Linux and MacOSX

Audio files to help identify rf noise (rfi). Identify the RFI that interferes with your reception. RFI Noise identification.

Sound Card Interfacing for RTTY, PSK31, and SSTV

This amateur radio web site explains how to use the AGWPE utility program to send and receive packet (a digital data mode) using the sound card of your PC instead of a traditional TNC (Terminal Node Controller), a radio modem.

A homebrewed switchbox prooject Don Wilhelm W3FPR