Propagation

MUF Data

Band Conditions

World Climate

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Solar Activity Monitor


Solar X-rays:
Geomagnetic Field:

StatusStatus

About the Solar X-ray status monitor

The X-ray Solar status monitor downloads data periodically from the NOAA Space Environment Center FTP server. The previous 24 hours of 5 minute Long-wavelength X-ray data from each satellite (GOES 8 and GOES 10) is analyzed, and an appropriate level of activity for the past 24 hours is assigned as follows:

Status
Normal: Solar X-ray flux is quiet (< 1.00e-6 W/m^2)
Status
Active: Solar X-ray flux is active (>= 1.00e-6 W/m^2)
Status
M Class Flare: An M Class flare has occurred (X-ray flux >= 1.00e-5 W/m^2)
Status
X Class Flare: An X Class flare has occurred (X-ray flux >= 1.00e-4 W/m^2)
Status
Mega Flare: An unprecedented X-ray event has occurred (X-ray flux >= 1.00e-3 W/m^2)
The designation “Mega Flare” was chosen by Kevin Loch when the status monitor was created on March 4, 1999.
There is no “official” designation for flares in this range.

About the Geomagnetic Field status monitor

The Geomagnetic Field status monitor downloads data periodically from the NOAA Space Environment Center FTP server. The previous 24 hours of 3 hour Planetary Kp Index data is analyzed and an appropriate level of activity for the past 24 hours is assigned as follows:

Status
Quiet: the Geomagnetic Field is quiet (Kp < 4)
Status
Active: the Geomagnetic Field has been unsettled (Kp=4)
Status
Storm: A Geomagnetic Storm has occurred (Kp>4)

Propagation  Primer

Propagation Primer teaches the basics of HF (short-wave) radio propagation and is easy to understand. By AE4RV, requires FlashPropagation Primer: a simple tutorial on HF (HIGH FREQUENCY or SHORTWAVE) Radio Propagation. Want to brush up on the basics? Forgot what the D Layer is? Wonder why AM broadcast radio stations come in from so far away at night? Confused about the numbers used in space weather reports? This is for YOU. Requires FLASH plugin, which you probably already have.

FLASH Plugin is small, safe, popular and REQUIRED.

G0KYA’s Amateur Radio Blog

Steve, G0KYA produces an excellent Blog site which gives the latest propagation predictions. at www.g0kya.blogspot.com

Together withAlan G3NYK, of the Radio Society of Great Britain’s (RSGB) Propagation Studies Committee, he has released a free ebook called ‘Understanding LF and HF Propagation’
Click here to download.