audio preamp

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

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.

NASA Online VLF Receiver  ^pop - Hear VLF audio from NASA online VLF radio receiver in Huntsville, Alabama.

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

Microwave audio samples - 10GHz Rainscatter audio files

Mutek - Transverters, amplifiers and low noise preamplifiers

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

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.

DART - Clean up audio files and record high quality audio CD's!

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.

DataBase Toolkit by AOR - Windows freeware database containing frequencies, locations, and a small logging program capable or recording audio

MRP40 Morse Decoder  ^{updated  pop} - Program to receive morse code via sound card, Windows 9x/Me/XP, it allows to transmit morse code from the keyboard. Includes a comfortable Audio Analyzer Display. Successor of known MRP37

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.

Ham Radio Deluxe Logbook - HRD Logbook v5 is a freeware windows logbook program that offer full control of your radio, Rotor control, support for many db engines, multiple logbook, dx cluster client interface, band maps and solar status report and audio recording

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.

GSpec - Spectrum Analyser for Win9x/2000 and NT, that will display audio input to your sound card in the Frequency and Time domains

Analyzer2000  ^pop - Superfast analyzer for audio and radio signals

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

Homebrew projects by dl5dbm  ^pop Priority listing - KW,2-meter,6-meter,antennas,amplifiers,preamps,powersupplys, and more

Radio Shack Special - Here's an amazing one transistor FM radio that has amazing sensitivity, selectivity and great audio output

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