audio spectrum analyzer

SPARC - SPARC club offer live repeater audio streaming from West Haven, CT USA. EchoIRLP link also available.

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

Bankstown Airport-Sydney, Australia  ^updated - Audio from Bankstown Airport monitored on 132.8 mhz. and 123.6 mhz.

Microwave audio samples - 10GHz Rainscatter audio files

PicoScope - Pico Technology have developed a wide range of professional PC-based instruments that offer all the functionality of conventional test equipment (DSO - digital storage oscilloscope, spectrum analyzer, meter), and also many features not normally available in this price range. Available functios are Oscilloscope, Spectrum Analyser, XY Scope, Meter and Measurements

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

Caltech Submillimeter Observatory (CSO) - A 10.4-meter diameter, submillimeter spectrum telescope. Situated at the top of Mauna Kea, Big island, Hawaii.

FCRAO - A 15-meter diameter, submillimeter spectrum telescope. Situated near the summit of Mauna Kea, Big island, Hawaii.

VLF Natural Radio Discussion Group - Discussion group dedicated to those who enjoy monitoring radio frequencies in the VLF radio spectrum and slightly below the VLF spectrum (3-30 KHz).

ManualMan - Now over 10,000 manuals for amateur, audio, and radio-related equipment available

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

CW Skimmer - Multi-channel CW decoder and analyzer for Windows 98/ME/2000/XP. Simulatneously decode ALL cw signals in the receiver passband - up to 700 signals can be decoded in parallel and extract call sign

Hoka Electronics Italia - Decoding and data analyzer software

Code332 - Multitasking data analyzer demodulator and decoder for Windows.

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  ^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

HamAlyzer  ^pop Priority listing - HamAlyzer is a spectrum analyzer made just for hams, save plot images easily for emailing, monogramed with your call sign. HamAlyzer looks no more supported, here 2.8 trial version available. Download hamalyzer

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

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