signal analysis

4 Square Vertical Phased Array - Improve your 80 and 160 meter signal without a Yagi!

Broadband receiving antenna matching - This article addresses the subject of obtaining the best signal transfer from an antenna to the typical 50-ohm receiver input over a wide frequency range, with emphasis on medium-wave (500 – 2000 kHz), encompassing the standard AM broadcast band and the 160-m amateur band.

A Novel Perspective of Amateur Radio Contesting - A detailed analysis of amateur radio contesting using novel techniques in pdf format

University of Hawaii Radio Astronomy - Online receiver streams signals from Jupiter and the sun

Radio Meteors-NASA Alabama - Icom PCR 1000 at NASA Marshall Space Flight Center monitoring meteor signals on 67.3 mhz.live.

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

Q Signals - Comprehensive Listing of Q Signals

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 Weak Signal Homepage Priority listing - This website is for amateur radio op's that use VHF/UHF weak signal communication's. Also homepage for the Sidewinders on Two Radio Club or SWOT.

MoonBounce (EME) & Weak Signals - Amateur Radio operation and weak signal detection pages by AF9Y

VOACAP Quick Guide - A Quick Guide to using VOACAP - Point-to-Point High-Frequency Ionospheric Communications Analysis and Prediction Program

Amateur Radio Propagation Studies - Amateur radio propagation studies (science, research, engineering, operating) and the BeamFinder propagation analysis software

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

Voices of Distant Countries - Personal site of Russian DXer Dmitri Mezin. Contains a fresh edition of his Signal bulletin, archive of all previous issues and QSL gallery.

Beacon-Prediction Wizard Priority listing - Specialized interface for the communications-analysis-prediction engine provided by VOACAP, predicts the expected performance of high frequency, HF, radio systems

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

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.

59+ CW  ^pop - Freeware Win32 application can be used for sending CW signal to the transceiver over a COM port or simply listening to Morse code on the speaker. The application is very easy to configure and will allow you to you to add new Morse characters set speed, tone, dash, dot, PTT line delay and other parameters. It is also possible to set shortcuts for call, QTH, name, RST and ANY other QSO field.

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.

VOACAP - Point to Point hf ionospheric communications analysis and prediction program

Analyzer2000  ^pop - Superfast analyzer for audio and radio signals

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