Latest SSN / Flux Forecast :: Propagation Resource Center :: HFRadio.org
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The Solar Dynamics Observatory (SDO) Latest Solar Images
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SDO - Solar Dynamics Observatory     SDO - Solar Dynamics Observatory

Note: At times, images may appear broken or missing, when SDO is working on the AIA/HMI instruments.
Main Propagation Page

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I highly recommend the following...

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NEW! ACE HF Pro
This is the best propagation modeling and circuit simulation software for Amateur and Shortwave Radio Operators
ACE-HF Modeling Software


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PropLab Pro
Best ionospheric ray-tracing software for Radio Operators
PropLab Pro Ray-tracing Software


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Hot: STD Space Weather Course
This is an excellent self-study course on Space Weather and Radio Propagation. This is a very in-depth and rich course that will equip you with the knowledge you need for understanding Space Weather, the ionosphere, how radio signals propagate via the ionosphere, and much more. Check it out!
STD Space Weather Course


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Take a listen to the Space Weather Podcast!

NW7US Space Weather / Radio Proapgation Podcast; E4 - Subject: No more sunspots by 2015!? It is possible, if the trend revealed in current sunspot research at Kitt Peak, AZ, continues. Listen now!

Podcast home: NW7US Podcast


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Gain the on-air edge: This article explains how the ANTENNA is the key! -> Read this introduction to Antenna Modeling


STEREO 3D

STEREO 3D IMAGE

X-ray Conditions (Flares) 5-min.

X-ray plot

X-ray Conditions (Flares) 1-min.

X-ray plot

Geomagnetic Conditions (Kp)

plot of Kp

Satellite Environment Plot:


Satellite Environment Plot





Main Propagation Menu:

+ Sunspot Cycle/MUF/FOT Tables
+ Current Optimal Frequencies
+ Aurora Resources

How-To Articles:

- Is HF Propagation Reciprocal?
- De-mystifying HF Radio Propagation and Modeling

Check out the ACE-HF propagation software - the latest is version 2.05. ACE-HF is propagation forecasting and modeling for Amateur Radio as well as for Shortwave radio Listening and general HF operation. This software is even used by the military and other clients around the world. This software is developed and maintained by the same engineers that keep VOACAP up-to-date. As a result, this software is the most accurate user interface integrated with VOACAP. CHECK IT OUT, TODAY. This software is the most accurate modeling software available, and is endorsed by NW7US. Read the details to find out why.




Main Site Menu:

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Tomas David Hood - NW7US - that is me, the fellow that runs this website. I am a musician. You can listen to my music by clicking on the following banner, then click the 'Listen to All Tracks' button. If you would, please vote for each song. It helps me in my musical journey! (You can also leave me a comment on what you think about my music.)


Please help me keep this site running:

This website is kept alive by Tomas (NW7US), out of "spare change" (which there's not always enough of), and, by the kind, helpful people who visit this website. Would you like to help me keep this site running 24/7? If you are able to help me keep this website up and running, please: help me keep this site running for everyone... click on this donation button:


There are other ways that you can help me keep this site up and running. Here are a few other ways:

1. Send your donation via postal service. Make your donation payable to: Tomas Hood, PO Box 9, Stevensville, Montana 59870-0009.

2. Purchase ACE-HF PRO Propagation Software Version 2.05 - a small proceed will be sent to HFRadio.org to help keep the site running. Be sure to mention that you are buying this software through HFRadio.org.

3. Purchase one or more of the following Solar Terrestrial Dispatch (STD) products, and a small proceed will be sent to HFRadio.org:

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4. Make a purchase through the HFRadio.org affiliation with Amazon.com.



Other links of interest:

- PropNET - live propagation studies

Want to learn about Propagation and Space Weather? - Take the STD Space Weather Education Course, today!

- Shortwave Radio Resource Center
- Shortwave Broadcasting Search

Comments? Please use the feedback form. I look forward to hearing your comments.

Check out some of the other activities that I am involved in:
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More resources for you:

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Join the On-line Propagation Discussion Forum, today! We need your input and participation. The NW7US Discussion Forums include:

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(Opera 9.x):
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This page was rendered on 24-Jul-14 0421 UTC.

Sun Spots: 55 as of 07/23/2014 :: Flux: 99 | Ap: 6 | Kp: 1
Solar Wind: 320 km/s at 1.0 protons/cm3, Bz is 4.0 nT
(Jul 24, 2014 at 0414 UT) :: [ Other Kp graphs ]
To view the best working frequency by time, check out:
Current Optimal Frequencies for this month

If you are using software utilities such as Ace-HF, that require a "smoothed" sunspot number
(Referred to as the SSN), or the smoothed 10.7-cm flux index,
use the following predicted values in this table:

To understand more about the Maximum Usable Frequencies, and related
science, please read the MUF Basics Page.

[ Main Propagation Center ]


Check out this amazing NASA SDO (Solar Dynamics Observatory) video
showing plasma rain on the Sun!




Check out this amazing NASA SDO (Solar Dynamics Observatory) video
showing a prominence the Sun:




Don't forget to join the Space Weather and Radio Propagation Facebook Page.


Do you want this space weather information on your website?

Here are two examples of this space weather info for your website:

For the example, above, use the following code:
<iframe src="http://hfradio.org/sspx.html" width="498px" height="148px" frameborder="0"></iframe>


For the example, above, use the following code:
<iframe src="http://hfradio.org/vsspx.html" width="620px" height="304px" frameborder="0"></iframe>



Subscribe to my Space WX RSS Feed:
(Opera 9.x):
Widgetize!


Additional Views of the Sun

Be sure to check the Date shown in each photo - is it today's date?
(click to enlarge)

Current Numbered Sunspots / MDI MagnetogramCatania Solar Disc

H-Alpha View 1H-Alpha View 2


Space Weather Information Monitor Software - sample screen shot Interested in keeping tabs on ALL of the current Space Weather information? Check out the Space Weather Information Monitor Software (SWIM) - support the NW7US / HFRadio.org Propagation Resource Center and purchase your copy of SWIM, today.

With SWIM, you can monitor, display, animate or print to your printer over 200 default space-weather related Internet resources, in real-time. You can use SWIM to expand and manage THOUSANDS of additional internet resources quickly and easily. Simply cut and paste Internet URLs of resources you find interesting and SWIM will immediately begin managing those resources for you. Retrieve the latest space weather forecasts and summary reports. Add any number of other textual reports you find on the Internet.

Find out the full details about the Space Weather Information Monitor Software (SWIM).