audio oscillator kit

Low Land DX-pedition Team - Contains stories, pictures, audio files of all previous expeditions and current ones.

EI4IX Dave - Dedicated to 50MHz and 144MHz. Online 2m and 6m logs. Real Audio sound clips of Tropo, Aurora, Sporadic E, Meteor Scatter, TEP and F2 Propagation.

W4JBM Jim Priority listing - Information on ham radio including qrp, radio kits, Heathkit sw-717, Realisitic DX-160 and DX-302, and more.

Radio Kits - Mailing list for people interested in building radio and electronics equipment from kits or from scratch. Frequent topics include shortwave radio receivers, construction techniques, and ham radio project.

Remote controlled receivers  ^{updated  pop} - Use real audio streams to listen to Hf and VHF stations around the world via remote controlled receivers connected to the web.

VR2HF Online Yaesu FT-817  ^pop Priority listing - Online Yaesu FT-817 transceiver (receive only over the Net) using R.A.T.S. control software and MS Netmeeting for program access and audio. Asia's first online receiver, first online FT-817, and worlds first full-featured online receiver (operates just like a desktop radio including audio encoding time of less than 1 second). Operating from a flat in Kowloon, Hong Kong. Open to all.

VK2FLR DX Sounds Archive - Real Audio files containing interesting examples of VHF DX propagation from Sydney, Australia

VK2QF 6m sound archive - Real audio sounds clips

VK6RO's DX Sounds Page - Clips of DX audio, some dating back to the late 70's to early 80's and up to March 2001

Digital Oscilloscope kit - The kit is build on a 75mm x 65 mm PCB and consists of only a few components. Kit includes comprehensive hardware details, Windows 95/98 software plus all the parts you needs to build this project.

Micro Finder Doppler - MicroFinder Doppler Kit by AHHA Solutions

WaveSources - RF and microwave oscillators and synthesizers to 10 Ghz

50MHz Sound Archives - Real Audio sound archives from H44PT cycle 21. Also from cycle 23 G8BCG, Z2/G8BCG, ZB0/G8BCG.

Ham Radio & DSP - Related histories, facts and opinions by EA2BAJ, includes example of PSK MT63 QPSK audio files in wav file

Interval Signals Library - Collection of audio clips of foreign radio stations, with identification announcements in various languages, signature tunes and jingles, and of course interval signals

Freeze! DXing Arctic Style - AM DXing taken to the extreme. Reports and station logs from DXpeditions to Arctic Northern Finland. Also articles, QSL news, links, audio and video on AM DXing. Published by Finnish DXer Mika M§kel§inen.

RecAll - AudioCapture recorder software for Windows, Runs in the background, and starts recording when sound is detected from the microphone input.

Electronics Toolkit - Solve electrical and electronics equations quickly and easily with the Electronics Toolkit

EchoFilter - EchoFilter uses the soundcard of a PC to process income audio signals in real-time. The narrow filter bandwidth allow the extraction signals and sounds from the audio signal that may normally be close to inaudible. It is intended for radio HAMS, hobbyists, researchers, scientists and students in the DSP field.

SSB Pileup player - It plays back max 10 WAV audio data as one Real SSB Pileup Windows98/NT4

RX-PSK31 - Easy to use Audio Spectrum and PSK31 decoding program specially designed for SWL's who don't need TX or for anyone who just like to monitor PSK31 or analyse signals. Adjustable DSP and Spectrum settings for audio and frequency spectrum to set for best decoding of PSK31.

Simplex - SIMPLEX is a free windows program which transforms any transceiver into an audio repeater. It works on HF, VHF, UHF etc with SSB, CW, FM, packet, SSTV and every modulation mode.

HI FI Audio in SSB - How to produce great audio using your SSB rig and outboard equipment. Step by Step instructions.

The Radio-Frequency Ground - You were told that your audio was no good, that you had "RF in your audio ? This is also known as RF feedback

Interface for MS_DSP - Minimal interface circuits for receiver and transmitter audio, also for PSK31