propagation prediction

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.

NGDRT 10 Meter Beacon - NGDRT now sponsors the K4AIS beacon at 28270.5 KHz. Feel free to use this beacon anytime you want to see the propagation into North Georgia.

K5DZE Becon - The K5DZE/B 10 Meter Beacon currently operates on 28.228 MHz 24/7 transmitting a CW signal at 18 WPM as an aid to check 28 MHz propagation Northern Kentucky

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

DX Italia Propagation forecast - Propagation forecast for current month edited by I2MQP in italian

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.

Operating Meteorscatter - Meteorscatter (MS) describes a propagation mode whereby the signal is reflected from rather small ionised patches in the E-region of the ionosphere.

Sporadic-E propagation at VHF - This review of progress and future Prospects provides a practical guide for effective use of VHF sporadic-E propagation. By Emil Pocock, W3EP.

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

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

Solar Cycle Progression - The charts on this page depict the progression of the Solar Cycle. The charts and tables are updated by the Space Weather Prediction Center monthly using the latest ISES predictions

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

SPLAT! for Windows - This free software is useful for visualizing terrain and performing Longley-Rice path loss and coverage prediction using the Irregular Terrain Model. A Windows port of the Linux-based SPLAT by John Magliacane.

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