URGENT - We still need help to keep going! The monthly bandwidth/connectivity fees as well as other expenses must be paid to keep this Space Weather and Radio Propagation resource up and running. The server upgrade, minus the new memory needed, has been paid for. But, we still need the memory, and still need to replace power modules and batteries. (We cannot move to the new server until memory is paid for and upgraded). If you find this site useful, would you please help out, today? I need your help to offset the cost of running this server and providing these web resources (space weather, amateur radio, shortwave listening, and more). Please Help Keep HFRadio.org Alive! If you can help, today, please make a donation to HFRadio.org - click the PayPal button, to help... any amount that you can spare. THANK YOU.
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.
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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:
Sun Spots: 148 as of 12/20/2024
:: Flux: 184
| Ap: 13
| Kp: 3.00
Solar Wind: 516 km/s at 3.0 protons/cm3, Bz is 7.0 nT
(Dec 21, 2024 at 1207 UT) :: [ Other Kp graphs ]
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:
Predicted SMOOTHED Sunspot Number And Radio Flux Values
With Expected Ranges
YR/MO
Smoothed Sunspot Number
Predicted/High/Low
Smoothed 10.7 cm Radio Flux
Predicted/High/Low
To understand more about the Maximum Usable Frequencies, and related
science, please read the MUF Basics Page.
Be sure to check the Date shown in each photo - is it today's date?
(click to enlarge)
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.
