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 HF Portable - Mobile - Emergency Communications - International Resource for Amateur Radio - Information Exchange - Nets - Ionospheric Propagation
IONOSPHERE PROPAGATION FOR HIGH FREQUENCY RADIO COMMUNICATIONS
Hourly Propagation Maps CLICK HERE FOR HF ACTIVITY NETS SKEDS HFNOW GROUP
  North America Region - Europe Region - Australia NZ Region - Far East Asia Region
Global Map of Optimum NVIS Frequency
Maximum Frequency for Communications Within 300 kilometers of Your Location
NVIS World Map
Based upon observed propagation in the past hour, and updated at 40 minutes past the hour.
NVIS is best just below the highest frequency which the ionosphere will reflect vertically. This is called foF2.
The foF2 measurements from ionosondes around the world are used to create this world map.
Based Upon Hourly Ionosphere Soundings
All maps are updated at 40 minutes past the hour; click on the maps to zoom and reload.




Maps of DX and Regional Optimum Frequencies
Based on the previous hour of observed propagation
Optimum Frequency Maps Centered on World Cities
To use the maps below, locate a map for a city near your QTH and click on it. Follow the color frequency contours to locate an area you wish to communicate with. For optimum signals, tune your radio to the ham band closest to the MHz of the color range indicated by the map. 
Updated at 40 minutes past the hour; Click on the maps to zoom and reload.



San Francisco
Click: San Francisco Zoom
Boulder
Boulder Zoom
Kansas City
Kansas City Zoom
Washington DC
Washington DC Zoom



Whitehorse
Whitehorse Zoom
Montreal
Montreal Zoom
London
London Zoom
Rome
Rome Zoom



Stockholm
Stockholm Zoom
Tokyo
Tokyo Zoom
Sydney
Sydney Zoom
Darwin
Darwin Zoom



Perth
Perth Zooom
Auckland
Auckland Zoom
These maps are made from data gathered in real time around the world using HF ionospheric radar systems called ionosondes. Ionosondes bounce HF radio signals off the ionosphere to measure the height of the reflective zones and signal strength vs frequency. The maps are generated using the ionosonde data to make projections based upon a base station working a mobile. Mapping source: Australian Government IPS Radio and Space Services


Updated at 40 minutes past the hour; Click on the maps to zoom and reload.
These maps are made from data gathered in real time around the world using HF ionospheric radar systems called ionosondes. Ionosondes bounce HF radio signals off the ionosphere to measure the height of the reflective zones and signal strength vs frequency. The maps are generated using the ionosonde data to make projections based upon a base station working a mobile. To use the maps on this site, locate a map for city near your QTH. Follow the color freqeuncy contours to locate an area you wish to communicate with. For optimum signals, tune your radio to the ham band closest to the MHz of the color range indicated by the map. Mapping source: Australian Government IPS Radio and Space Services
Ionospheric HF Propagation Map source: Australian Government IPS Radio and Space Services
The members of HFpack wish to express appreciation for the propagation services
provided by the Australian Government.














HFpack is the International Resource for Amateur Radio HF Portable - Mobile - Emergency Communications - Ham Radio Information Exchange - Nets - Ionospheric Propagation.
HFpack provides an information exchange about transceivers, antennas, systems, High Frequency communications, QRP, HF packs, propagation, EMCOMM, new developments and
techniques in VHF and HF portable operation. Radio Amateurs are invited to participate in HFpack group forums and on-the-air nets around the world.
HFLINK is the International Resource for HF ALE Automatic Link Establishment - Ionospheric Propagation Research - High Frequency Communications - Emergency Communications.

Notice: 
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are all Trademarks of HFpack, Inc. All rights reserved.
HFLINK, HFLINK Logo, HFLINK ALE, and HFLINK Insignia are all Trademarks of HFpack, Inc.  All rights reserved.
Capture of the HFpack website or any part of it within the frame of another website is prohibited.
All of the the HFpack egroups are private member-only forums. 
Public archiving of any or all of the HFpack email message groups or web posting groups is prohibited.
All text and images on the HFpack website are copyright protected and all images are property of HFpack Inc.

All rights reserved. No part of the HFpack website may be used without direct written permission of HFpack, Inc.
All links to the HFpack site must be only to the HFpack website home page HFPACK.COM  http://www.hfpack.com
©2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 HFpack, Inc. All Rights Reserved.


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About HFpack: However you spell it, HF pack H.F. Pack H-F pack or HF-pack, HFpack is all about: High Frequency Portable transceivers and HF portable antennas, HF antennas, portable HF antennas. HF SSB/CW/Data. Amateur commercial marine. Handhelds backpacks, carry-ons, HF pack manpacks. Pedestrian and Human Powered Mobiles. Manual and automatic antenna tuning. The HF Portable Antenna is a critical part of the HF portable amateur radio station. HFpack helps operators to choose the right antennas. QRP is an important aspect in HFpack for equipment and antennas. Telescopic tape folding and collapsible antennas, dipole, broadband hf vertical antennas. These are the things that make HFpack an interesting part of the HF operator's resources.  Battery solar crank alternative energy power supplies. Compact lightweight miniature equipment. Handsets headsets microphones earphones keyers. Low power TX/RX techniques. Portable amplifiers. Hiking camping bicycling kayaking and expeditions.