Solar X-rays: Solar Xray Status
Geomagnetic Field: Geomagnetic Field Status

dhs threat level

Amateur Radio Propagation RSS (XML) Live Feed

Mon, 07/28/2014 - 11:00pm
Live space weather and propagation data, in RSS (XML) format.

Tropospheric Ducting Forecast

Mon, 07/28/2014 - 11:00pm
William Hepburn's Daily Tropospheric Ducting Forecast.

Solar Cycle Progression

Mon, 07/28/2014 - 11:00pm
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

DR2W - DX Propagation

Sun, 07/27/2014 - 11:00pm
DX Propagation by DR2W! High resolution SNR maps in pseudo color. Propagation based on the actual sunspot number.

Understanding Solar Indices

Sun, 07/27/2014 - 11:00pm
By Ken Larson KJ6RZ, a complete guide to understanding soloar indices and values.

About Smoothed Sunspot Number

Sun, 07/27/2014 - 11:00pm
The short history of the SSN Smoothed Sunspot Number at Luxorion

Propagation Prediction Tool

Sun, 07/27/2014 - 11:00pm
This is a propagation prediction program tailored to the serious contester

Maunders Butterfly Diagram

Sun, 07/27/2014 - 11:00pm
How to understand when a new solar cycle starts. At the beginning of a new solar cycle, sunspots tend to form at high latitudes, but as the cycle reaches a maximum the spots form at lower latitudes.

An introduction to HF Propagation

Sun, 07/27/2014 - 11:00pm
This article will help to unravel some of the mysteries as well as giving useful operating tips to maximize your chances of working that rare station by G4UCJ

Near-Realtime MUF indicator

Sun, 07/27/2014 - 11:00pm
This is a highly informative map that can be used by amateur and professional radio communicators to determine maximum usable frequencies for any world-wide path at the indicated UTC (Zulu) time.

Cloud RF - Web VHF/UHF planning

Sat, 07/26/2014 - 11:00pm
Web based VHF-UHF RF planning powered by SPLAT! and Google Maps. Access via website, Android App or dynamic Google Earth interface.

The PropNET Project

Sat, 07/26/2014 - 11:00pm
PropNET is an ad-hoc 2-way (and potentially, "more-way") RF-based digital communication network whose activity is reported on the Internet. As participating stations periodically ID and exchange data, they report their activity to an Internet data-collection hub for presentation through this web site.

DX Italia Propagation forecast

Sat, 07/26/2014 - 11:00pm
Propagation forecast for current month edited by I2MQP in italian

Near-Real-Time F2-Layer Critical Frequency Map

Sat, 07/26/2014 - 11:00pm
This map can be used to determine the frequencies that will always be returned to the Earth. Transmitted frequencies higher than the indicated contours (which are given in MHz) may penetrate the ionosphere, resulting in lost power to space. The map shows the radio auroral zones as green bands near the northern and southern poles.

A and K index in propagation

Fri, 07/25/2014 - 11:00pm
The understanding of the A and K indexes will become a very important issue when one begins serious HF operation.

Solar Activity and 3-day Predictions

Fri, 07/25/2014 - 11:00pm
Prepared jointly by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center and the U.S. Air Force.

Geomagnetic and Solar Indices

Fri, 07/25/2014 - 11:00pm
NOAA / Space Weather Prediction Center, Geomagnetic K-indices and Running A-indices, Local Noon Solar Radio Flux, Daily Solar Indices with SSN

NASA Sunspot Cycle Predictions

Fri, 07/25/2014 - 11:00pm
Nasa MSFC predictions on the behavior of current sunspot cycle.

Understanding propagation numbers

Fri, 07/25/2014 - 11:00pm
Quick reference table on understanding A K SFI indexes and how can be translated in usable frequency opportunities

Wapedia: Long Delayed Echoes

Thu, 07/24/2014 - 11:00pm
About Long-delayes radio exchoes at wapedia