heil sound

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

Digi Mode Sound Files - Mp3 and wav files linked from this page are intended to help your understanding of what the different digital modes sound like

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.

PSK31 Interfacing - PSK31 basics and radio to pc soundcard interface circuits, radio to soundcard, soundcard to radio and pc serial port to radio

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

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

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

SlowFeld XP - Free windows program by G3PPT that permits RTX of FeldHell

TWPSK - A linux soundcard based PSK program by DL9RDZ and WA0EIR

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

TWCW - This linux program will send Morse Code via soundcard or serial port by WA0EIR

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

BIP Electronics Lab Oscilloscope - Freeware windows oscilloscope uses the sound card's input to measure signals. This means that the quality of the scope depends on the quality of your sound card. The scope automatically uses the highest sample frequency available at the input that you select

SweepGen - SweepGen turns a PC into an Audio Oscillator and Sweep Generator which can be used for testing audio or educational purposes. In conjunction with audio test instruments, you can make frequency response plots. SweepGen uses the sound card in your PC to produce sinewaves

Sine Wave Generator - Freeware windows Wave Generator use the sound card's output as sine wave output. A built in sweep algorithm is used by audio hackers to measure frequency repsonses of their amplifiers

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.

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

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)

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