Propagation

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Solar X-rays:
Geomagnetic Field:
	From n3kl.org

Solar Information

• 12-hour Boulder-NOAA Magnetometer Monitor - dynamically updated every minute
• Aurora Sentry
• Latest Solar Events - [Solar Soft]
• Predicted Sunspot Numbers and Radio Flux - [NOAA]
• Solar Cycle 24 .COM - an excellent site by: VE3EN
• Solar Observables - [DX QSL Net] Current SFI, A and K vlaues from WWV
• Solar Resource Page - [WM7D dot Net]
• Solar Terrestrial Activity Report - [DX-Listeners' Club]
• Space Weather - News and information about the Sun-Earth environment

Propagation Charts

• Near-Real-Time F2-Layer Critical Frequency (foF2) Map
• Near-Real-Time F2-Layer Height Maximum (hmF2) Map
• Near-Real-Time Maximum Useable Frequency (MUF) Map

Propagation Plots

• The Prop NET Project
  ... propagation tracking! The charts on this web site reveal what RF communication circuits are available (and NOT available), in real time and without the inaccuracy of human assessment.
  ... providing station performance assessment to others! Operators who can't seem to get a response to their "CQ's" can "ping" a PropNET station (by sending a PropNET formatted transmission) and see if they are reported by a PropNET participant (along with an IMD report) on www.PropNET.org.
• PSK Automatic Propagation Reporter
  ... based upon reception reports of stations calling CQ.
• WSPRnet Weak Signal Propagation Reporter Network
  The Weak Signal Propagation Reporter Network is a group of amateur radio operators using K1JT's MEPT_JT digital mode to probe radio frequency propagation conditions using very low power (QRP/QRPp) transmissions.

Background Information

• From: The U.S. Naval Post Graduate School
  • Electromagnetic Radiation (EM)
    • What is electromagnetic radiation - A wave?
    • What is electromagnetic radiation - A particle?
    • Basic EM Concepts
    • Representing EM Radiation
    • The Electromagnetic Spectrum
    • Modes of Transmission
    • Introduction to Refraction - What causes EM waves to bend?
    • Bounded Electron Refraction
    • Free Electron Refraction
  • HF and Lower Frequency Radiation
    • Introduction
      
    • The Ionosphere and the Sun
      
    • Choosing the Right Frequency
      
    • Propagation Models
      
    • Space Weather
      
    • Summary and Additional Resources
      
• HAARP (High Frequency Active Auroral Research Program)
  
• The Basics of VHF and UHF Signal Propagation
  
• HF Ionospheric Radio Signal Propagation
• Ionospheric HF Radio Propagation Theory in a Nutshell
  An explanation by Rich Johnson, AE3C
• Near Vertical Incident Skywave (NVIS) Propagation Concept - U.S. Army Field Manual FM 24-18 Appendix M
• The Sun, the Earth, the Ionosphere; What the Numbers Mean...
  An explanation by Carl Luetzelschwab, K9LA

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DX Spots

DX Summit
HF	1.8 MHz	3.5 MHz	5 MHz	7 MHz	10 MHz	14 MHz	18 MHz	21 MHz	24 MHz	28 MHz
VHF plus	50 MHz	144 MHz	430 MHz	1.2 GHz	10 GHz
Misc.	Beacon		Digital		IOTA	Mobile		QRP	Satellite

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Live & Recorded Audio

• Dallas, TX
• 13-Miles North of Salt Lake City, Utah [Live] or [Recorded DX]

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Last Modified: Thursday, 2-Sep-2010 20:33:26 EDT