LinkedIn Group: Heliophile Group - the propagation and space weather scientists community

LinkedIn Community - the Heliophile Group :: HFRadio.org

Main Propagation Page

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

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
- 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.)

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Now playing: Tomas David Hood

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:

Other links of interest:

- PropNET - live propagation studies

- Shortwave Radio Resource Center
- Shortwave Broadcasting Search

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

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

This page was rendered on 30-Jun-24 2006 UTC.

Sun Spots: 205 as of 06/29/2024 :: Flux: 186 | Ap: 14 | Kp: 3.33
Solar Wind: 491 km/s at 4.0 protons/cm3, Bz is -1.0 nT
(Jun 30, 2024 at 1947 UT) :: [ Other Kp graphs ]

Welcome to the LinkedIn Group, known as the 'Heliophile Group'.

We are a group of individuals who are either professional or amateur scientists, and other individuals who are interested in Space Weather, Radio Propagation, and the relationship between solar, atmospheric, ionospheric, and geophysical activity and phenomenon as it relates to radio wave propagation.

To join this group, please let me know how you are involved in Space Weather, Solar Science, Geophysical Science, and/or Radio Propagation. Amateur Radio operators, shortwave radio listeners, military communications groups and individuals: you are also welcome.

The group's administrator is Tomas Hood, NW7US. That's me. You can send me a message either on LinkedIn, or, go here to leave a message for me. Be sure to mention LinkedIn and your desire to be part of this group.

On 2024 Jun 30 2001Z: Bz: 1.5 nT
Bx: -2.9 nT | By: 4.4 nT | Total: 5.5 nT
[ Real-Time Solar Wind data dials ]
[ Real-Time Aurora Map ]

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

X-ray Solar Flares:
6h hi [C5.9][1532Z 06/29] 24h hi [C5.9][1532Z 06/29]

Global HF Propagation Conditions for 0400Z on 05 May, 2021
High Latitude: Normal
Middle Latitude: Normal
Low 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 predicted for the next 24 hours.

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

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:

You will need a newsreader for RSS/XML.

This RSS is Validated:

(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:

Reports of Solar & Geophysical Activity
Solar & Geophysical Activity Summaries
From the Space Environment Center:

Solar X-ray Flux

A 3 day plot of 5-minute solar X-ray flux values measured on the GOES 8 and 10 satellites.
A 6-hour 1-min Solar X-ray Flux plot

Satellite Environment Plot

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).

Today's Space Weather
Current Space Environment Alerts & Warnings
Space Weather dot Com
Aurora Network
SOHO - The Solar and Heliospheric Observatory
D-Layer Absorption Conditions and Predictions
160 Meter Propagation Forecast
KN4LF 7 Day Medium Wave Radio Propagation Outlook
Solar Physics Department of the Royal Observatory of Belgium - the official keepers of sunspot data.
The DX-Listeners' Club, Norway, Solar Activity Report - with great graphs and synopsis.

foF2 Soundings in North Atlantic (N.America) and Australia:

Australian IPS general propagation advice for HF communicators
Real Time Hourly Area Prediction HAP Charts, North America (HAP = Hourly Area Predictions of Communication frequencies)
North American Regional Real Time Ionospheric Map

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.

[ Solar Cycle Details ] [ Graphical comparison of Solar Cycles 21, 22, and 23. ]

I write the propagation columns for the following magazines:

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 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 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 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.