propagation forecast

NVIS Antennas and Propagation - Understanding Amateur Radio NVIS Antennas and Propagation

Check DX Propagation with Beacons - W0RW article that guide you to using beacons to determine dead bands or upcoming propagation openings.

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

10 Meter Synchronized Propagation Beacon Project - Project started by several 10 meter beacon operators in an ad-hoc fashion to experiment with operating 10 meter beacons similar in concept to the IARU beacon project

SKØCT/B - Propagation Beacon, Sweden,Stockholm,Sollentuna

N2NXZ Beacon - 10 Meter Propagation Beacon. Amateur Radio and Wind turbine info

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!

Operating NVIS - Near Vertical Incidence Sky Wave (NVIS) Propagation, PPT presentation by Marc C. Tarplee, Ph.D. N4UFP

W1TAG WD2XES WE2XGR/3 - Experimental Stations Run by W1TAG WD2XES has been used to study LF antenna design, propagation and communication modes. Signals from WD2XES have been copied as far away as Russia.

An Introduction to 24 GHz - Article provides a guide on how to use 24 GHz band and what to expect, including Active modes, equipment, propagation and antennas for this band in by VE3SMA

WSPRnet Weak Signal Propagation Reporter Network - A group of amateur radio operators using K1JT's MEPT_JT digital mode to probe radio frequency propagation conditions using very low power transmissions. Computer sent/received Morse signals received by amateurs and collected on an online database.

Understanding Amateur Radio NVIS - Understanding Amateur Radio NVIS Antennas and Propagation, derived from The ARRL Antenna Book and QST Articles

What is NVIS - differences from groundwave propagation

NVIS Propagation maps - Maps and propagation indices

NVIS Propagation - Kingston Amateur Radio Club Articles Dave Lawrence, VA3ORP

Solar Activity and 3-day Predictions - Prepared jointly by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center and the U.S. Air Force.

Using the QST propagation charts - Notes on using the QST propagation charts to determine propagation conditions

Understanding propagation numbers - Quick reference table on understanding A K SFI indexes and how can be translated in usable frequency opportunities

Radiowave Propagation Center - High frequecy and VHF radio propagation data, solar and geomagnetic real-time and historic data, sunspot activity reports, as well as forecasts. A comprehensive propagation resource compiled by Tomas Hood, editor of the propagation columns of CQ, CQ VHF, Popular Communications, and Monitoring Times magazines.

Mid-Latitude Sporadic-E (Es) - This article was originally written in response to a brief review of the basics of sporadic-E

Sporadic E propagation - About Sporadic E propagation at wikipedia

Spotless days around solar cycle transition - An interesting perspective of the transition from one solar cycle to another is given by exploring the days with no reported sunspots.

WSJT - WSJT facilitates basic digital communication using protocols like FSK441, JT6M, JT65,JT2, JT4, WSPR explicitly optimized for a number of different propagation modes by K1JT

BeamFinder - BeamFinder is a software tool designed to conduct analyses for radio amateurs interested in radio propagation studies. It provides a large 2500 x 1800 pixel screen map of the world which displays calculated results from sophisticated models, dx data and other sources of information

WSPR - WSPR implements a protocol designed for probing potential propagation paths with low-power transmissions. Stations with internet access can automatically upload their reception reports to a central db