altai signal generators

East Tennessee Weak Signal Association Priority listing - Dedicated to the use and advancement of amateur radio vhf/uhf weak signal communications

BitScopes Mixed Signal Oscilloscopes - Robust and affordable PC based mixed signal oscilloscopes for Windows, Linux and Mac. Isolated USB or networked connection to one or more PCs. Data acquisition, waveform generation and multi-user options available.

First radio signal over Atlantic - Description od Marconi's first transmission over Atlantic Ocean

A Visit to Cape Cod - The place where Marconi received the first transatlantic signal

Amateur Radio Astronomy - A radio-telescope project observing the natural radio emissions of neutral hydrogen atoms throughout space.

F4DAY technical website - ATV and high speed data signalling projects

Digital Monitoring Site - Digital signale transmitted in HF-UHF-VHF, in italian

G4CCH EME 1296Mhz - News of latest radio activity, initial contacts list, recordings of EME signals, information about station, and overview of latest projects.

VLF Time Signal Broadcasts - Station List Compiled by William Hepburn, LWCA

Introduction to MFSK and the MFSK16 - A new weak signal DX mode for Radio Amateurs, employing M-ary FSK, phase continous tones and convolutional coded FEC.

The KM5ES 2 Meter SSB Homepage - All about 2 meter SSB weak signal operation's,HSCW,SWOT

N5KDA Gary - Ham Radio, Meteor Scatter,Backscatter Meteors, WSJT, JT65B, weak signal,Vhf Ham Radio, VHF two meter meteor skeds, dx, cw and EME

VHF+ Weak Signal Site of VE2PIJ - VHF+ Weak Signal Site

Douglas T. Smith Editorial Service Priority listing - Digital Signal Processing Technology: Essentials of the Communications Revolution by Doug Smith, KF6DX, ARRL, 2001, ISBN 0-87259-819-5

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

HAM Software de ON1DHT - Great shareware software collection for ham radio, includes prefix finders, locators,frequency generators and links to other ham radio software.

WSJT High Speed Meteorscatter - "Software uses four-tone frequency-shift keying for meteor scatter. WSJT stands for ""Weak Signal communications, by K1JT"", and plans call for the program to include more than one communication mode."

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.

Bonito RadioCom - Decode digital and analog signals out of any high quality Transceiver or Receiver, works as a DSP-analyzing system

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.

Monteria - International Commercial supplier of HF, VHF and UHF signals analysis and receiver control hardware and software

Analyzer2000  ^pop - Superfast analyzer for audio and radio signals

Frees - Calculates the freespace range of a radio-link. It is useful for radio amateurs, radio engineers and for SETI signal estimations. Calulation of parabolic dish antenna-gain is included.

WOLF - A proposed new signal format for LF weak-signal work, It can be used for beacons and for two way communication

DSP-10 2-meter DSP transceiver - The DSP-10 is an amateur-radio, software-defined 2-meter transceiver that can be built at home. It operates not only on SSB, FM and CW, but also on four Weak-Signal modes. Features are tailored to operation on VHF, UHF and Microwave frequencies. By W7PUA