improving dsp audio

QNEWS Ham Radio News - Daily updates to the weekly QNEWS Ham Radio News service in text realaudio and RF

XE1XZQ Diego - Weekly bolletins of XE1RCS in RealAudio

XE1YJS Joaquin - Ham radio, Mir contact samples in Real audio, packet and some links

Ham Radio Community Chapter Priority listing - Ham radio webcam live, solar updates, radio mods, satellite images, audio and video interactive, polls, links, constant events, weather, qrz database, by kd4sai

US Police Scanner  ^{updated  pop} - Live, 24-hour audio broadcasts of police scanners in major cities around the United States.

Hal Communications - HF radio data communications products, analog and DSP modems

SCS PTC Priority listing - Special communications systems, the creators of pactor, TNC using DSP protocols

W2IHY Audio Products - Band audio equalizer and noise gate compatiable with ICOM, KENWOOD, YAESU and other radios

MT63 HF mode - MT63 is a DSP based advanced HF mode for Amateur Radio, intended to provide high performance keyboard - to - keyboard conversational operation on HF bands under poor conditions

Getting started on EME - How to get started on EME, with audio clips and lots of useful information for beginners by N1BUG

MoonBounce operations - EME operation news, typical moonbounce audio recordings

Ten Tec Orion II Official page - Orion II HF DSP Transceiver

Scanrec Scanner Recorder - Scanner Recorder (Scanrec) is a free audio recorder that is primarily designed to record speech. It has a VOX control that allows the user to save disk space when no sound is present in the signal. Since FM communications has such an effective squelch, the recorder works best with FM. HF ham bands and World Band radio have such a poor signal to noise ratio that the VOX gate on Scanrec might not be very easy to set.

Vox Recorder  ^{updated  pop} - Vox Recorder is a Windows utility wich allows recording sound from an audio source only when an audio signal is present; its main purpose is to avoid the recording of the silence eventually present at the input. Vox Recorder has been designed in particular for radio-scanner hobbists.

Voice Shaper - Voice Shaper is a freeware windows speech pre-processor for SSB transceivers. It receives the voice signal from the microphone connected to the soundcard, and sends the processed audio back to the soundcard in real time by Alex Shovkoplyas, VE3NEA

Free programmable DSP-Filter  ^pop - Free programmable LOW/HIGH/BANDPASS FIR filter in the audio range 0-4kHz

Voice Descramble - This program descrambles band inverted encrypted transmissions, usually found on VHF/UHF. It uses a NCO (numerical controlled oscillator) to re-produce the originally inverted audio band.

WinMSDSP 2000 - Shareware program to receive and transmit high speed CW (morse code) used in MS (amateur radio communication mode) with MS Windows 95/98 and sound card.

Spectran - Program designed to do spectral analysis and real-time audio filtering on reception of audio signals for EME, VLF, SETI applications. Offer support for MTHELL, QRSS, DFCW, NDB, WSJT by I2PHD

Picture Packet - A Windows95/98/NT control program for Terminal Node Controllers. In its Lite mode it's all the software many packet users may ever need, and it's free. Receive and display of full color, high-resolution images and audio files

SkySweeper - Provides most advanced digital signal processing (DSP) functions to be used together with your HF receiver. All signal processing is done in your PC and no extra hardware is needed. HF/VHF rx & tx and analysis software introducing free advanced SkyBoost and MFSK16 modes!

SSTV1 - SSTV1 Modem software is an AFM modem that runs on the TAPR/AMSAT DSP-93 hardware platform that can be used to receive and transmit Slow Scan Television(SSTV) signals.

Spectra - Accurate spectrum analyzer in the range 0 - 2500 Hz, makes an accurate FFT analysis of an audio signal coming from the soundcard

FFTDSP  ^pop - FFTDSP is a PC program which can detect weak radio signals in real time. Uses the PC's soundcard and advanced signal processing techniques, extracts and displays weak signals from the receiver audio.

High-speed packet 23cm - 23 cm wide-band transceiver for high-speed data or audio by PE1JPD