Jon Harder

@ng0e.bsky.social

87 Followers 60 Following

Creator and maintainer of • vhf.dxview.org • hf.dxview.org

A map centered on Europe showing DX Clusters. Clusters are represented by colored circles (red, orange, yellow) indicating connectivity to the select node, GB7VAX.
A screenshot the new HF+ propagation map home page showing sections labeled "View map", "About", "News", "Donations", "Amateur Radio", and "Sources".
A starting page layout divided into multiple sections titled "View map", "About", "News", "Donations", "Amateur Radio", and "Technologies".
A donations popup that includes a yellow bar graph indicating the current funding level.
Map icons that include a red heart for access a donations menu
A VHF propagation map showing the interconnecting hops of many stations arching over a region in Europe.
A VHF propagation map showing two different stations selected simultaneously.
A VHF propagation map showing a new popup menu for selecting station details.
Browser address bar showing link to a particular perspective.
VHF propagation map show activity between Aukland and Wellington, New Zealand.
APRS paths spanning from the Great Lakes to the Atlantic
VHF propagation map showing activity from Wichita to northern Mississippi.
A propagation prediction chart for 14 MHz between the grid squares PM35 and PI58.
A HF prediction for the 14 MHz band centered on Asia as captured by a phone screenshot.
3.5 MHz propagation map showing a starred perspective location as seen on a phone screen.
18 MHz propagation map showing western Europe and featuring a draggable target and text input field for selecting a station location, as shown on a phone screen.
10 MHz propagation map showing western Europe on a phone screen.
VHF propagation map of central Europe.
Screenshot from a phone showing VHF propagation centered on Germany.
VHF propagation map of the NE USA.
A VHF propagation map highlighting a station in Turkey.
HF propagation map showing the gray line feature and the associated menu option.
"Lightship No. 25 Finngrundet" in port.
A yellow buoy with solar panels and antenna bobbing in the ocean. KQ6RS photo.
Three musk oxen in a snowy landscape. VY0ERC photo
The German polar research vessel Polarstern as it navigates sea ice.
An HF prediction chart between EN23 and EK38 showing which bands are best. A colored band along the bottom associates hour of the day with the optimal band.
HF prediction chart between EN23 and QL32 showing gray bands indicated when long path is better.
HF propagation chart between grid squares EN23 and EM71, showing hours 0000Z to 2400Z on the 18Mhz band. The chart is color coded showing SSB, CW and FT8 levels.
A man stands on the International Dateline in Fiji with the left side labeled "Today" and the right side "Yesterday."
A map of activity on the 20m amateur radio band showing station C94RRC in Mozambique.
View of aprs app status showing 158.6M memory in use.
Rust line of code: .wrap(Compress::default())
Map showing HF propagation on the 20m band.
Map of VHF propagation for the upper midwest of the US.
Map showing current propagation on the 20 meter band