Propagation / Solar Links...
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Real Time numbers & info...
- Spaceweather.com - news and info about the Sun-Earth environment.
- Solarcycle24 -All of your solar and aurora needs in one place !
- Hamqsl - HF Propagation Tools and Solar Data.
- Make more miles on VHF - the leading VHF-DX portal.
- 50 MHz propagation logger - 50 MHz DX spots.
- HF propagation logger - HF DX spots.
- IPS Radio & Space Services - The Australian Space Weather Agency. Chock full of good stuff!
- Space Weather Now - NOAA space weather prediction center.
- Propagation/Space weather - Radio Propagation : Space Weather : Sunspot Cycle Information.
- National Solar Observatory - GONG, Global Oscillation Network Group.
- Propagation - This page contains a dynamic collection of propagation information gathered from many different sources.
- SDO - Solar Dynamics Observatory
- SOHO - Solar & Heliospheric Observatory, is a project ofinternational collaboration between ESA and NASA to study the Sun from its deep core to the outer corona and the solar wind.
- Solar Terrestrial Dispatch - more solar data.
- Stereo Science Center - Latest SECCHI beacon images.
- D-Region Absorption Prediction - Real time absorption map from NOAA
- FM & TV DXing - DX Conditions As They Happen
OVER 1,600 FM STATIONS LOGGED!
- Current solar images - full-resolution solar image of each type in the SDAC archive.
- Solar and Geophysical Activity - 3 day report prepared jointly by the U.S. Dept. of Commerce, NOAA,
Space Weather Prediction Center and the U.S. Air Force.
- NOAA Space Weather Scales - The NOAA Space Weather Scales were introduced as a way to communicate to the general public the current and future space weather conditions and their possible effects on people and systems.
- SuperDARN - An international Radar network for studying the Earth's upper atmosphere, ionosphere and connection into space.
- Radio Line of Sight Plot Server - The form on the following page will allow you to make a request to a radio line of sight plot server. By return mail, you will receive a GIF picture of the elevation of each point on the earth between the starting point and ending point that you specify. This elevation plot is pre-warped to account for the fact that microwave radio signals don't really propagate in a straight line.
- The solar wind - The solar wind streams off of the Sun in all directions at speeds of about 400 km/s (about 1 million miles per hour).
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HF, VHF & UHF Propagation explained...
- Radio propagation - From Wikipedia, the free encyclopedia
- Ionospheric Propagation explained- from hamchatforum
- HF propagation tutorial - In 1998 Bob Brown wrote a syllabus about HF propagation for his students that became this tutorial in which Bob introduces us in the fascinating world of HF propagation.
- 160 meter propagation - The following paper was published in the March and April 1998 editions of
CQ Magazine. PDF file.
- Radio wave propagation - an article about the basics of radio wave propagation.
- NVIS - NVIS, or Near Vertical Incidence Skywave, refers to a radio propagation mode which involves the use of antennas with a very high radiation angle.
- NVIS PROPAGATION CONCEPT - NVIS Army Field Manual 24-18
- SM6EHY - on PROPAGATION (below 10 MHz mainly).
- Simple HF propagation primer - Use this Flash movie to learn how HF or "Short-wave" radio works. Learn about the Ionosphere, Solar Flares, and why radio waves skip or refract off of the different layers of the Ionosphere. Learn how space weather affects radio conditions.
- HF Ionospheric Radio Signal Propagation - the basics of HF ionospheric radio propagation and how the ionosphere enables radio communications links to be established over large distances around the globe using what are termed sky waves or skywaves.
- Missing Sunspots - Mystery of the Missing Sunspots, Solved?
- ARRL Propagation page - The name says it all.
- Space Weather - This web site will tell you all about this important, and costly, problem (solar storms) and what we can do about it.
- Understanding LF and HF Propagation - from the RSGB. PDF file.
- The PSC pages - The Propagation Studies Committee of the RSGB.
- Understanding HF Radio Propagation Forecasts - Ham Radio operators, shortwave radio enthusiasts often talk about propagation index numbers, the status of the solar cycle and geomagnetic conditions. Why? What do the numbers mean?
- The radio propagation - A guide to the ionosphere.
- Groundwave Propagation and Distance - A Microsoft Doc file.
- Top Band Propagation - a variety of tools which will hopefully help you improve your chances of succeeding at Topband (160 meter) DX.
- Online HF propagation predictions - from HAMwaves.com.
- VHF and UHF propagation - On VHF and UHF the normal situation is no DX --- until some abnormal propagation occurs. Also, unlike shortwave, there are several different kinds of propagation above 30 MHz.
- Sporadic-E propagation on VHF - a primer on sporadic-E.
- Basics of VHF and UHF Signal Propagation - more info.
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Propagation Tools & Maps...
- Tony's 10 metre band report - G4CJC'S weekly look at activity on the 10 metre band.
- VOACAP Online 1 - Professional-grade high-frequency (3-30 MHz) point-to-point propagation predictions.
- VOACAP Online 2 - Professional-grade high-frequency (3-30 MHz) coverage area prediction map generator.
- VOACAP quick guide - HF Propagation Prediction and Ionospheric Communications Analysis. Scroll down for explanations.
- VOAProp - VOAProp shows you typical propagation for a given hour of the day during a given month.
- Ham CAP - Freeware HF propagation prediction tool for Amateur Radio.
- Skywave Analysis - Delivering high performance HF Communications Analysis Prediction and related software Tools for Amateur Radio - ham radio - operators and communications professionals.
- PropView - PropView uses the included VOACAP, ICEPAC, and IONCAP propagation prediction engines to forecast the minimum and maximum useable frequencies between two locations over a specified 24 hour period. Results are rendered in an easy-to-understand color-graphic display.
- Radio Explorer - Radio Explorer displays shortwave radio broadcast schedules so that you can tune in to onair international stations and listen to the world around you.
- W6ELProp - W6ELProp predicts ionospheric (sky-wave) propagation between any two locations on the earth on frequencies between 3 and 30 MHz.
- NCDXF/IARU Beacon Network - These beacons help both amateur and commercial high-frequency radio users assess the current condition of the ionosphere.
- W6NEK HF Beacon Tracker - To aid in identifying the NCDXF / IARU International Beacon Network.
- BEACLOCK - a program with which radio amateurs can see which of the NCDXF beacons are transmitting at which frquency.
- PA1ARE 's Software page - Beaconmap is a visible aid for monitoring the NCDXF/IARU Beacons
- NCDXF/IARU - Beacon schedule in Microsoft Excel format. A free Excel viewer is available here also.
- HF Beacons - G3USF's Worldwide List of HF Beacons.
- BEACON LIST - TEN METER PROPAGATION BEACON LIST.
- North American 50 Mhz Beacon Map - by K9MU - v2.0
- 50MHz Beacons - G3USF's Worldwide List Of 50MHz Beacons.
- VHF Propagation Maps - These experimental maps show real time vhf activity
as reported by the APRS-IS network.
- Tropospheric ducting forecasts - 6-DAY FORECASTS OF VHF, UHF & MICROWAVE RADIO & TV SIGNAL STRENGTH & INTERFERENCE.
- Near-Real-Time F2-Layer Critical Frequency (foF2) Map - from IPS Radio Services.
- Map of F2-layer critical frequencies - a recent high-resolution global map of F2-layer critical frequencies
- Usable HF freqs - real time usable HF freq map.
- Map of the F2-Layer Height Maximum - a recent global map indicating the altitude above the surface of the Earth where the ionospheric electron density reaches a maximum.
- Near-Real-Time MUF Map - a recent high-resolution map of Maximum Usable Frequencies (MUFs) for 3,000 kilometer radio signal paths.
- Dx Sherlock - QSO real time maps. EXCELLENT!
- DXAnywhere - we developed DXA so even when out and about you can be informed of that elusive DX you need.
- DaylightMap.com - DaylightMap shows the pattern of night and day on a Google map, for any area of the Earth, for any date and time.
- Grey line map - Real time map. The "grey line" is a band around the Earth that separates daylight from darkness. Propagation along the grey line is very efficient.
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