sound generator

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).

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

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.

Cleverscope - The PC USB mixed signal oscilloscope - Cleverscope PC based oscilloscopes, spectrum analyzers and signal generators

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

Bitscope Waveform Generator - Integrated DSP based waveform generator and timing for BitScope. Arbitrary waveforms, synchronized clocks and external triggers.

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

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

OH5FAD RF Signal generator - Schematic and information

VK1PK RF Signal generator - 3 to 12 MHz signal generator, simple local signal source

Signal generator to adjust a ssb-transmitter

Signal Generation Solution - Build an inexpensive RF signal generator

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

PSK31 Interface - Fairly simple way to interface a computer soundcard to an HF rig to operate PSK31. This interface also works for SSTV & RTTY, and has been tested with a Kenwood TS-140.

UHF signal-generator - Schematics by jf10zl

VHF signal generator - a simple VHF signal generator in order to measure the characteristic of low pass filter.