sample sound

Sound samples of digital transmissions - Sound samples of the transmission modes recorded at 11025 samples per second, mono and the message in all of the samples is the same: "the quick brown fox jumps over the lazy dog 1234567890".

DX Audio Files - MP3 Sound Clips - International Medium-Wave DX by Mark Connelly, WA1ION

DD3DJ Sound Samples - Some sound samples of received signals mainly on VHF-band

Digital modes sounds - Ever wonder what all those funny sounds are that you come across from time to time on the ham bands

I-LinkBoards.com - Echolink, EQSO, Echostation, SSTV, WEFAX, PSK-31 other digital sound card modes

PSKMeter - KF6VSG pskmeter page, describing the hardware, software and firmware for a monitoring device for psk31 transceivers that automatically maintains the sound card level to give maximum drive to the transmitter without introducing distortion.

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

RFSM-2400 Digital Mode - A recent digital radio protocol. Based on a freeware soundcard-based Radio Frequency Software Modem. Work under standart MIL-STD-188-110A. Maximum speed 2400 bit/second. Signal bandwidth: 0,3-3,3 kHz (standard mode) and 0,3-2,7 kHz (non-standard mode).

WM2U's PSK31 Page - An interesting article on PSK31, includes informations on interfacing to sound cards, troubleshouting, list of psk31 softwares and some historic backgrounds.

Sound Card Packet - 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.

Sound Card Packet Interface - Setting up and testing a sound card packet radio interface by KD5ZUG

QRSS - Very Slow CW - W0CH QRSS explained, with samples and software reviews

DSCdecoder - DSCdecoder decodes the DSC digital signals from ships and coast stations using the sound card in your PC. You need a suitable MF, HF or VHF band radio receiver tuned to one of the DSC distress and calling channels or to one of the Navtex channels

MT Hell - MT-Hell software for 16 bit Soundblaster cards. Sends seven parallel tones with careful dot shaping for minimum interference, and transmits a very nice sound by G3PPT

Lan Link for Windows - Lan Link for Windows by G3ZCZ, Internet interface to CXCluster, Controls PK-232, PK-900, PK-88, KAM, KPC-3, MFJ1278, and TNC2, PSK31 via the sound card in the PC, eQSL interface

CwGet PPC  ^updated Priority listing - A program to decode Morse code via sound input of PDA to text. No additional hardware required - your need only receiver and PDA with sound input. Built-in microphone of device can be used also.

WINRAD by I2PHD  ^{updated  pop} - Winrad is a free software program designed to implement a Software Defined Radio (SDR), meant to run under Windows XP, Windows 2000, or Windows 98SE. In a nutshell, it accepts a chunk of up to 96 kHz coming from a complex mixer in form of two signals, I and Q, fed to the PC sound card.

HamTimer - HamTimer was written by WF0GM to provide a way of showing both UTC Time and Local Time simultaneously, Provide a reminder to the Amateur Operator to identify his/her station every 10 minutes as necessary, Sound an alarm for WWV solar activity announcements each hour.

Soundcard Audio Tools and Toys - Soundcard audio tools and toys, experimental ideas and utilities. Signal Generator, Frequency-counter / instrument-tuner, Real-time Spectrum Analyser

The MGM Interface - General purpose RTX-PC sound card Interface for MGM (Machine Generated Modulation)

Simple Electronic Keyer - A simple keyer which can be built for as little as $6 with some junk box parts. Although this circuit is not a true iambic keyer, it is capable of producing perfectly sounding CW.

SoundCard Packet TNC PC to Radio Interface - Computer sound card packet tnc to radio interface. david stansbury kb3kai home-brew version of this soundcard to rig adapter

Some Tips on Sound Card Interfacing to Your Rig - Article on PC to radio interfacing by Paul Umbdenstock, WA1VOA

Interfacing to PC soundcards - General electronic topics on interfacing to PC soundcards by epanorama.net

A Cable Construction Trick - If you have several TNC and radios this trick can be usefull for you