modulation monitor

Exploring the world of 10 Meter Beacons - Monitoring times article by KS4ZR about ten meters beacon monitoring

W0ERE Beacon  ^updated - To provide a continuous signal on the ten meter amateur radio band for propagation-related monitoring

G4IRX Beacon Monitoring - Beacon monitoring system by G4IRX setup at IO92JV

G4ZFQ beacon monitoring - Recording and logs of UK beacon monitoring station at G4ZFQ

ODXC Web Monitor - Obninsk DX Cluster Web Monitor, telnet and Java based Web access. Offer a simple DX Cluster web interface.

Low Band Monitor - The Low Band Monitor is a monthly twelve page newsletter edited by Lance Johnson, that was introduced in April of 1993. The main objective of this newsletter is to promote Low Band DXing on the 1.8, 3.5 and 7.0 mz. Amateur Radio Bands

Ham Radio Chat NZ3M - A little meeting place with real time chat for ham radio ops. Includes dx spotting, propagation monitoring and more. Chat while working DX!

Leader - Waveform monitor, rasterizer, video and rf generators

Russian VHF Trophy - For carrying out of bilateral QSOs on band of 2 meters, 70 and 23 centimeters all kinds of modulation. It is authorized to spend QSOs, using all kinds of passage: TROPO, ES, AURORA, MS, FAI, EME, IONO,

BCFMCA D-STAR System - British Columbia Frequency Modulation Communications Association

Radiosonde : how to listen to them - Frequencies and location of every meteo radiosonde launching centres in Europe. Equipments, antennas, history, SondeMonitor and BalloonTrack tutorials

AURFSCAN - Australias Radio communications monitoring forum for the Scanner and Shortwave enthusiast

US Shortwave Listener Call Signs - Easily obtain an official call sign identifier for your United States SWL Monitoring Station.

Beacon Light - A simple beacon monitoring program for windows by DL5SWB

DXCluster for Pocket PC - It is a DXCluster program that can use either Packet (Packet Engine) or Telnet to connect to DXCluster servers.It can catch also DXCluster spots monitoring the Packet Frequency.

Miltimonitor - Linux Radio Transmission Decoder support AX.25 POCSAG DTMF ZVEI by Thomas Sailer, HB9JNX/AE4WA

IBP - Beacon Monitor - Linux program that helps one with monitoring the beacons of the International Beacon Project, by continuously showing which beacon is transmitting on which frequency, along with the distance and antenna directions by PA3FWM

CTR-Remote - CTR-Remote is an enhanced version of CTR817 (a Pocket PC radio control program for the Yaesu FT-817). The program has been completely re-written using Microsoft Visual Studio .NET and now supports a wider range of radios, Bluetooth® wireless technology and/or TCP/IP and Wi-Fi radio control, ADIF log import and export format, custom frequency lists, DX Cluster monitoring, callsign lookup, and enhanced scanning options.

Spectrum Analyzer Real-time FFT - Eight-channel Audio Spectrum Analyzer is a set of Real-Time Multi-Channel Gauges for investigation of data accepted from any ADC you will want or 16-, 24- and 32-bit ADC of sound card. WDM drivers support. FFT Spectrum Analysis, OscilloScope, Frequency counter, AC/DC voltmeter, Signal-to-Noise Ratio, Signal-to-Noise and Distortion, Spurious-Free Dynamic Range, Effective Number Of Bits, Total Harmonic Distortion, Inter-Modulation Distortion, Phase Shift. Special modes of dual-channel FFT spectral analysis: Separate channels spectra, Spectra of digital sum, difference, product of two signals, Spectrum of digital product of original signal and its fundamental, Spectrum of Real and Complex Transfer Function, Cross Spectrum. Standart weighing of spectra according IEC and CCIR. Oscilloscope modes (for dual-channel ADC) are: original signals, sum, difference, dependence of one channel on another, amplitude distribution of input signals.

FreqLoader: iPhone companion for the mobile ham - FreqLoader is the perfect iPhone/iPod Touch companion for amateur radio operators, monitoring enthusiasts, shortwave listeners and anyone with an interest in the air waves. Whether you're an active licensed ham or an avid scanner listener, FreqLoader will allow you to find what you're looking for, keep track of your stations, maintain complete logs and share your finds with friends, groups and the world.

AVR Beacon Keyer Project - Description of an HF beacon keyer with telemetry. What makes the keyer rather different is its versatility - it is a multi-mode unit, with ASK and FSK modulation, sending Feld-Hell and Morse on command.

5th order High Pass VHF Filter - Sometimes many VHF-UHF modern transceivers have problems with BROADCAST Interference and CROSS-modulation from FM commercial broadcast stations this article shows a simple Batteworth HI-Pass VHF Filter to reduce this problem

Build yourself an RF Ammeter - An Easy way to Monitor RF, AC or DC current with one instrument by W5JGV

Intermodulation - Intermodulation distortion, commonly known as Intermods, is a type of interference that can occur in any non-linear junction.

2.4GHz Spectrum Analyser - This is a simple project that allows you to monitor the 2.4GHZ band in your immediate vicinity.