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

dhs threat level

Long delayed echo at Wikipedia

Wed, 10/22/2014 - 11:00pm
Long-delayed echoes are radio echoes which return to the sender several seconds after transmission.

Geomagnetic and Solar Indices

Wed, 10/22/2014 - 11:00pm
NOAA / Space Weather Prediction Center, Geomagnetic K-indices and Running A-indices, Local Noon Solar Radio Flux, Daily Solar Indices with SSN

D-Region Absorption Prediction

Wed, 10/22/2014 - 11:00pm
This map represent the current position of the sun and how a solar flare influence an HF fade. Estimated recovery time is also represented. Includes son java and javascript animations of last two hour conditions

Long Path Propagation

Wed, 10/22/2014 - 11:00pm
Long path hf radio propagation is sometimes the best path to work dx, since the shortest path is not always the best path.

Last 30 Days Solar Data

Wed, 10/22/2014 - 11:00pm
Display a table of last 30 days sunspots reports. Prepared by the U.S. Dept. of Commerce, NOAA, Space Environment Center

Near-Real-Time F2-Layer Critical Frequency Map

Wed, 10/22/2014 - 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.

SuperDARN

Tue, 10/21/2014 - 11:00pm
An international Radar network for studying the Earth\'s upper atmosphere, ionosphere, and connection into space.

Solar Cycle 24

Tue, 10/21/2014 - 11:00pm
Current status, prediction, solar weather for the solar cycle 24 by VE3EN

An introduction to HF Propagation

Tue, 10/21/2014 - 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

Tropospheric Ducting Forecast

Tue, 10/21/2014 - 11:00pm
William Hepburn's Daily Tropospheric Ducting Forecast.

DR2W - DX Propagation

Mon, 10/20/2014 - 11:00pm
DX Propagation by DR2W! High resolution SNR maps in pseudo color. Propagation based on the actual sunspot number.

Predicted Sunspot Numbers and radio flux

Mon, 10/20/2014 - 11:00pm
Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center

Basics of Radio Wave Propagation

Mon, 10/20/2014 - 11:00pm
Exaustive introduction to radio wave propagation, includes a very detailed glossary on common propagation terms, composed by AE4TM.

Propagation on 137 kHz

Mon, 10/20/2014 - 11:00pm
Propagation in the LF-Band

VHF Propagation Maps

Mon, 10/20/2014 - 11:00pm
Experimental maps that show real-time VHF propagation derived from analyzing data gathered from the APRS-IS network.

CT1BOH Solar Page

Sun, 10/19/2014 - 11:00pm
Collection of real time solar data by CT1BOH

E-skip Warnings via Email

Sun, 10/19/2014 - 11:00pm
Automatic 144MHz E-skip Warnings via Email for European Region

Report of Solar and Geophysical Activity

Sun, 10/19/2014 - 11:00pm
The Report and Forecast of Solar and Geophysical Activity is the primary daily report prepared by SEC. It provides a summary and analysis of solar and geomagnetic activity during the previous 24 hours as well as the most recent solar indices. It also provides a forecast of activity and indices for the next 3 days.

Small Antennas for High Frequencies

Sun, 10/19/2014 - 11:00pm
This is about Small Antenna types and their properties which can help choosing proper antenna for high-frequency wireless communications as: two-way radio, microwave short links, repeaters, radio beacons or wireless telemetry

160 m Propagation Prediction

Sun, 10/19/2014 - 11:00pm
160 Meter Radio Propagation Prediction Table