ARRL Propagation Bulletins :: Propagation Resource Center :: HFRadio.org



I recommend the following...

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NEW! ACE HF Pro
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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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


Main Propagation Menu:

- Last Minute HF Forecast
- Current Forecast Section
- Sunspot Cycle/MUF/FOT Tables
- Current Optimal Frequencies
- Aurora Resources

- Educational Resources
- What's a CME?

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:

- Main NW7US Page
- About NW7US
- About Amateur Radio
- Discussion Forums (Hot!)
- Propagation Links
- Contact NW7US




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.)

SongVault.fm - The Best in Independent 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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Web hfradio.org


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This page was rendered on 20-Dec-14 2213 UTC.

Sun Spots: 156 as of 12/19/2014 :: Flux: 203 | Ap: 8 | Kp: 1
Solar Wind: 350 km/s at 1.0 protons/cm3, Bz is 1.0 nT
(Dec 20, 2014 at 2204 UT) :: [ Other Kp graphs ]


Below are the ARRL Propagation Bulletins. You might also want to check the live propagation page.