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

dhs threat level

Optical Research Programme

Sun, 11/02/2014 - 11:00pm
Auroral Large Imaging System, ALIS

Ground Wave Signal Propagation

Sun, 11/02/2014 - 11:00pm
Article on propagation basics. The ground wave used for radio communications signal propagation on the long, and medium wave bands for local radio communications

G7IZU Radio Reflection Detection Page

Sun, 11/02/2014 - 11:00pm
Meteor Shower, Aurora, Sporadic-E and Solar Flares detected using Radio Signal Reflection, by Andy Smith, G7IZU. Live waterfall displays from three receivers, live Es propagation maps.

Understanding Solar Indices

Sun, 11/02/2014 - 11:00pm
By Ken Larson KJ6RZ, a complete guide to understanding soloar indices and values.

Predicted Sunspot Numbers and radio flux

Sun, 11/02/2014 - 11:00pm
Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center

Near-Realtime MUF indicator

Sun, 11/02/2014 - 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.

Current Space Weather

Sat, 11/01/2014 - 10:00pm
Current Solar Wind Conditions

Catania Observatory sunspots data

Sat, 11/01/2014 - 10:00pm
Daily sun spots data collected by the Catania astrophysical observatory

Amateur Chirp Project

Sat, 11/01/2014 - 10:00pm
Amateur projects to investigate radiowave propagation - G3PLX\'s chirp project, ionosonde database, and more

Amateur Radio Propagation RSS (XML) Live Feed

Sat, 11/01/2014 - 10:00pm
Live space weather and propagation data, in RSS (XML) format.

Long Path Propagation

Sat, 11/01/2014 - 10:00pm
Long path hf radio propagation is sometimes the best path to work dx, since the shortest path is not always the best path.

Near Vertical Incidence Skywave

Sat, 11/01/2014 - 10:00pm
NVIS definition at Wikipedia

WM5R Long Delayed Echoes

Fri, 10/31/2014 - 10:00pm
WM5R presentation of Introduction to Long-delaye echoes and theories among this propagation effect.

VHF Radio Aurora Research

Fri, 10/31/2014 - 10:00pm
Website dedicated to vhf radio aurora operations by KG0VL

Propagation Prediction Tool

Fri, 10/31/2014 - 10:00pm
This is a propagation prediction program tailored to the serious contester

Near-Real-Time F2-Layer Critical Frequency Map

Fri, 10/31/2014 - 10:00pm
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.

Catania Observatory

Thu, 10/30/2014 - 10:00pm
Sun obserevatory in Catania Italy offer daily sun reports

Geomagnetic and Solar Indices

Thu, 10/30/2014 - 10:00pm
NOAA / Space Weather Prediction Center, Geomagnetic K-indices and Running A-indices, Local Noon Solar Radio Flux, Daily Solar Indices with SSN

Solar Region Data - SunSpots

Thu, 10/30/2014 - 10:00pm
Solar Region Data Current Regions with Sunspots Summary, an useful tool for predictions

Propagation below 10 MHz

Wed, 10/29/2014 - 10:00pm
About the band behaviour or propagation towards distant locations by SM6EHY