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

dhs threat level

H.F. F-Layer Propagation Predictions

Sat, 08/30/2014 - 11:00pm
Assembled from a prediction model written by VE5ZX/G0TZX, from parameters supplied by G4FKH

WM7D Solar Resources

Sat, 08/30/2014 - 11:00pm
Solar Flux reports, Current Alerts and Warnings from NOAA, 27 day forcast from NOAA, charts reflecting the past 7 years Solar cycle summary charts from NOAA

Solar Cycle Progression

Sat, 08/30/2014 - 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

Cloud RF - Web VHF/UHF planning

Fri, 08/29/2014 - 11:00pm
Web based VHF-UHF RF planning powered by SPLAT! and Google Maps. Access via website, Android App or dynamic Google Earth interface.

Troposcatter propagation

Fri, 08/29/2014 - 11:00pm
Introduction to troposcatter or tropospheric scatter propagation using the troposphere

Geophysical Alert Message wwv.txt

Fri, 08/29/2014 - 11:00pm
Broadcast via WWV and WWVH at 18 and 45 minutes past the hour. This message is updated every 3 hours. Reports current Solar-terrestrial indinces, Solar Flux, A-index, K-Index, forecast for space weather storms. Prepared by the US Dept. of Commerce, NOAA, Space Environment Center

Understanding propagation numbers

Fri, 08/29/2014 - 11:00pm
Quick reference table on understanding A K SFI indexes and how can be translated in usable frequency opportunities

Solar Cycle 24

Fri, 08/29/2014 - 11:00pm
Current status, prediction, solar weather for the solar cycle 24 by VE3EN

The DXrobot - Spots e-skip and aurora alerts

Fri, 08/29/2014 - 11:00pm
Automatic e-skip and aurora alerts via email or SMS, it sends also latest dxspots via email.

RK3AF Aurora pages

Thu, 08/28/2014 - 11:00pm
VHF, ms, aurora, es, photos, audio, link, soft and more.

Questions on VHF Propagation

Thu, 08/28/2014 - 11:00pm
A collection of ad Hoc empirical comments on VHF radio waves propagation by Pete Heins N6ZE

Long Path Propagation

Thu, 08/28/2014 - 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.

Greyline propagation

Wed, 08/27/2014 - 11:00pm
About greyline propagation in HF bands

NASA Sunspot Cycle Predictions

Wed, 08/27/2014 - 11:00pm
Nasa MSFC predictions on the behavior of current sunspot cycle.

Current solar images

Wed, 08/27/2014 - 11:00pm
Images from the Solar Dynamics Observatory and Atmospheric Imaging Assembly

Map of solar zenith angles

Wed, 08/27/2014 - 11:00pm
Global map of Solar Zenith Angles, or angles indicating the elevation of the sun above the horizon

Explanations of LDE

Tue, 08/26/2014 - 11:00pm
15 possible explanations for Long Delayed Echoes by University of Oslo

Radio Signal Propagation

Tue, 08/26/2014 - 11:00pm
Concise guides to radio signal propagation including topics such as the ionosphere, troposhere, ionospheric refraction, E layer, D, layer etc.

D-Region Absorption Prediction

Tue, 08/26/2014 - 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

NOAA Space Weather Scales

Mon, 08/25/2014 - 11:00pm
The NOAA Space Weather Scales were introduced as a way to communicate to the general public the current and future space weather conditions and their possible effects on people and systems. The scales describe the environmental disturbances for three event types: geomagnetic storms, solar radiation storms, and radio blackouts.