Propagation Resource Center :: NW7US :: HFRadio.org

PLEASE SEE SPECIAL NOTICE ABOUT OUR NEW SERVER!!

NEW: HOW-TO:
How do you make your HF ham station work more efficiently? The ANTENNA is the key! - introduction to Antenna Modeling


MAIN PROPAGATION MENU:

- Visual Space Weather
- Last Minute Forecast
- Current Condition Report / Alert
- Current Forecast Section
- Sunspot Cycle/MUF/FOT Tables
- Current Optimal Frequencies
- Aurora Resources

- Discuss Propagation Forum
- Educational Resources
- What's a CME?

Is HF Propagation Reciprocal? - New How-To

De-mystifying HF Radio Propagation and Modeling - New How-To

NEW! ACE-HF propagation software Version 2.05: THIS IS THE VERY LATEST! Forecasting and modeling for Ham as well as for SWL operators. CHECK IT OUT.

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. If you are able to help me keep this website up and running, please: help me keep this site running:

You can help by donating through PayPal (use the button, above), or, by purchasing any of the following items, which you benefit directly from:

BEST BUY: ACE-HF PRO Propagation Software Version 2.05 (NEW!)

The following are from Solar Terrestrial Dispatch (STD):

- SWIM PC Software
- Aurora Monitor Software
- All STD Software PLUS the space weather and radio propagation educational course

(End of plea for help!)

Other cool stuff:

- eAlert Sign-Up
- eAlert Help Page

- Propagation Links

- Contact me with your comments
- About Amateur Radio

WE NEED YOU:

- 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
- English Shortwave Broadcasts

To view the best working frequency by time, check out:

+ Current Optimal Frequencies

If you are using software utilities such as Ace-HF, that require a "smoothed" sunspot number, or flux index, use the data found here:

+ Predicted SMOOTHED Sunspot Number And Radio Flux Values with Expected Ranges

+ The eAlert (email) Propagation Reports

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:
+ I.C.D.M.
+ NewWebMakers.com
+ Healthy-At-Home.biz

More resources for you:
+ Join the On-line Propagation Discussion Forum, today! We need your input and participation. The NW7US Discussion Forums include:
Special Notice: I need your help with the Server Operation and Equipment Upgrade Fund. See the NW7US Support Page. A small donation can help me keep this free resource on the 'net. (Thank you).

You can also support this service by shopping here:

+ Shop for Shortwave Radios
+ Shop for Shortwave Books
+ Shop for Amateur Radio Books
+ Shop for Radio Antenna Books
+ Shop for Radio Propagation Books

I NEED YOUR HELP TO KEEP THIS RUNNING!


Google
 
Web hfradio.org


Subscribe to my Space WX RSS Feed:
(Opera 9.x):
Widgetize!
This page was rendered on 09-Jul-08 0213 UTC.

Sun Spots: 0 as of 07/07/2008 :: Flux: 66 | Ap: 2 | Kp: 1 (8 nT)
Solar Wind: 300 km/s at 1.7 protons/cm3 :: [ Other Kp graphs ]

On 2008 Jul 09 0208Z: Bz: -2.8 nT
Bx: 2.6 nT | By: -0.1 nT | Total: 3.8 nT
[ Real-Time Solar Wind data dials ]
[ Real-Time Aurora Map ]

Most recent satellite polar pass:
Centered on 07/09/2008 : 0037 UTC
Aurora Activity Level was 5 at 0037 UTC
visit noaa for latest.

X-ray Solar Flares:
6h hi [none] 24h hi [none]

Global HF Propagation Conditions for 0100Z on 09 Jul, 2008
Low Latitude: Normal
Mid Latitude: Normal
Hi Latitude: Normal


Summary for last 24 hours:
No space weather storms were observed for the past 24 hours.

Forecast for next 24 hours:
No space weather storms are expected for the next 24 hours.


Are you LinkedIn?

View Tomas Hood's profile on LinkedIn

You may also want to join the Heliophile Group on LinkedIn.

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



Tomas David Hood - NW7US - runs this site as a service to you. Tomas is also a musician.


View my page on Plugs Music Industry Network

The following music player allows you some entertainment while you browse this page. All of these tunes are of Tomas playing various guitars and other instruments. The tunes are Tomas' original songs. These recording are session out-takes. Enjoy. Comments are welcomed.


Find more music like this on Plugs Music Industry Network
I need your help:

If you don't want to donate,
you may also purchase the
propagation/space weather
software, and help out
at the same time!

NEW VERSION:
ACE-HF PRO 2.05
Propagation Tool


SALE ON THESE:

Space WX Monitor

Aurora Monitor

Space WX Course, plus
software, above

If there are warnings, they are listed lower on this page.


[ live aurora display ][ auroral polar maps ]
[ 1m x-ray flare graph ][ 5m x-ray flare graph ]
[ d-layer conditions ]

[ latest solar images 1 ][ latest solar images 2 ]
[ latest solar images 3 ]

[ active solar regions ][ current solar region image ]

[ What is a flare and its class? ]

Want the latest as an RSS feed? Click: XML RSS propagation feed

You will need a newsreader for RSS/XML.

This RSS is Validated:
This Propagation RSS Feed is a Valid RSS feed.

(Use http://hfradio.org/propsupport/prop.rss as your RSS channel url)

Click HERE for the full PropNET information.

For PropNET using PSK31, you can use the following software.

1) Download the runtime libraries: http://home.earthlink.net/~n7yg/Runtime.exe
2) Download MSPSK: http://home.earthlink.net/~n7yg/mspsk/mspsk.htm

Directions on setting it up on 10 meters.




						


Recent Space Environment Reports:

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).



The highest frequency which the ionosphere will reflect vertically is called foF2. These foF2 measurements from various sites can be used to create a map of foF2. The data used to produce the map of the USA region are fm USAF observing sites and obtained from Space Environment Centre, Boulder Colorado.

Check out the full details: HF Support at IPS Australia

The Solar Terrestrial Dispatch resources include a critical Frequency Map and a Near-Real-Time MUF Map. There's more at their http://www.spacew.com page.



Check out these books on Radio Propagation:

+ The New Shortwave Propagation Handbook (Paperback) - by George Jacobs, Theodore J. Cohen, R. B. Rose. The NEW Shortwave Progagation Handbook may well be the only book you'll need on the subject of ionospheric propagation! It is a "must read" for Radio Amateurs, Shortwave Listeners, and radio communicators of any type who need to make the most productive use of the radio spectrum, regardless of the time of day, the season of the year, or the state of the sunspot cycle. It will become your ever-present companion a the operating table as you master the art of shortwave radio progagation.

+ How Radio Signals Work (Paperback) - by Jim Sinclair. This book provides a basic understanding of the way radio signals work-without becoming bogged down with the technicalities. It covers all kinds of radio signal types--including mobile communications, short-wave, satellite, and microwave. No detailed knowledge of electronics or mathematics is required. A-Z coverage of radio signals including satellites, mobile communications, and short-wave radio. No math or electronics background necessary.

+ Introduction to RF Propagation (Hardcover) - by John S. Seybold. This book provides readers with a solid understanding of the concepts involved in the propagation of electromagnetic waves and of the commonly used modeling techniques. While many books cover RF propagation, most are geared to cellular telephone systems and, therefore, are limited in scope. This title is comprehensive-it treats the growing number of wireless applications that range well beyond the mobile telecommunications industry, including radar and satellite communications.

I write the propagation columns for the following magazines:

CQ Magazine CQ Magazine America's fastest growing magazine for the active ham radio operator. CQ is the world's leading independent magazine devoted to amateur radio. For more than a half-century, CQ has been on ham radio's leading edge -- the first to promote mobile operating (in the 1950s), semiconductors (in the 1960s) and packet radio -- the original e-mail (in the 1980s). The amateur satellite program got its start with an idea in the pages of CQ!

CQ VHF Magazine CQ VHF Magazine It is back! May 2002 saw the return of this quarterly magazines that focuses on amateur radio above 50 MHz. Articles and columns target both the beginner as well as the expert.

Popular Communications Magazine Popular Communications Magazine Exciting reading for the shortwave and scanner listener. It features authoritative information on scanner monitoring of police, fire, utility and aircraft transmissions as well as short wave listening, monitoring short wave digital, fax and teletype broadcasts, cb radio, alternative radio, clandestine radio, telephones and wiretapping, bugging, surveillance, pirate broadcasters, military communications, amateur radio, satellite tv reception, radio history and nostalgia.

Monitoring Times Magazine Monitoring Times Magazine Contains news, information, and tips on getting more out of radio listening. Do you own a radio, a shortwave receiver, a scanning receiver, or a ham radio? Then Monitoring Times® is your magazine! Open a copy of MT, and you will find 92 pages of news, information, and tips on getting more out of your radio listening. In fact, it's the most comprehensive radio hobby magazine in the U.S. Packed with up-to-date information concisely written by the top writers in the field, Monitoring Times® is your foremost guide to profiles of broadcasting and communications installations; home projects; and tips on monitoring everything from air, sea, and space to distant ports of call.




Copyright, 2004-2006, Tomas Hood (NW7US). All rights reserved.