Jon Harder
Creator and maintainer of
• vhf.dxview.org
• hf.dxview.org
- A new starting page has been created for the HF+ propagation map. Like the VHF page released earlier, it explains the purpose of the site and explains what it does. A new features allows users to set the perspective by providing a callsign. hf.dxview.org #hamradio
- Reposted by Jon Harder[Not loaded yet]
- The VHF propagation map now has a descriptive starting page. It offers several ways to enter the map and more details about the site. vhf.dxview.org #hamradio
- Reposted by Jon HarderI've been thinking about this sign for 6 months. a phrase I'll treasure forever. a metaphor with boundless potential
- Reposted by Jon HarderAustralia has so much electricity from solar power that it is going to start offering free electricity to everyone for at least three hours during the day as the wholesale price of power goes negative electrek.co/2025/11/04/a...
- The propagation maps recently added a heart icon for donations that appears when the funding level falls below 100%. The heart becomes more red as the funding level falls. When the level is below 50% a donation dialog will pop up about once a day for each user. #hamradio
- Donations cover the server, network bandwidth and other incidental expenses for providing the VHF and HF maps. Thanks to all who have donated! Direct donation link: www.paypal.com/donate/?host... HF map: hf.dxview.org VHF map: vhf.dxview.org #hamradio
- ANNOUNCING: The VHF propagation map has more options for showing hop details. Upon selecting a station's footprint a "details" menu pops up offering "single", "multiple", or "connected" views. 1/3 vhf.dxview.org #hamradio
- Selecting the "multiple" option allows station selections to accumulate. The keyboard shortcut alt- or option-click is equivalent. 2/3 vhf.dxview.org #hamradio
- When the "connected" option is used, all the connections in a region are exposed and station labels are suppressed. The keyboard shortcut c-click is equivalent. 3/3 vhf.dxview.org #hamradio
- There are now two ways to bookmark the HF+ propagation map: By band: hf.dxview.org/band/14 — set the band to the given MHz. Valid band numbers are 1, 3, 5, 7, 10, 14, 18, 21, 24, 28, and 50. By location (grid square): hf.dxview.org/perspective/... #hamradio
- An update to the VHF propagation map has been uploaded. It has a number of fixes including better representation of activity that is adjacent to the international dateline, particularly for New Zealand. vhf.dxview.org #hamradio #newzealand
- Happening now: I think this is legitimate propagation from Wichita to northern Mississippi. Can anyone on the ground confirm? vhf.dxview.org #hamradio
- Enhancements for mobile devices have been completed for the HF propagation map. Most visitors to the HF map are using a phone or tablet. The experience on phones and tablets is much improved now. The changes will be activated the next time you open or refresh the site. hf.dxview.org #hamradio
- There is a new button on all devices to reveals a propagation prediction between two points on the HF map. To show the prediction, first select an initial location. Next select a distant point of interest. Finally, at the top of the window, select "show prediction …". hf.dxview.org #hamradio
- On small screens, the prediction will fill the view and on larger devices it will appear as an inset at the bottom left. On large screen the prediction will change as the target destination is moved to a new location. The inset will move to get out of the way of the target as needed. hf.dxview.org
- ANNOUNCEMENT: the process of optimizing the HF+ propagation map for mobile devices has started. The app is working much better on small screens now. The band selection bar appears conveniently at the top of the screen. hf.dxview.org #hamradio
- The draggable target for selecting your station's location has been slimmed down (same on mobile and desktops) and the corresponding text input moved to the top of the screen. Panning or zooming the map under the selector now correctly updates the targeted location.
- The HF map is most useful when your location is selected because it personalized the map for your QTH.
- The VHF propagation map is working much better for mobile devices now. A significant number of visitors use mobile or tablet devices and this will greatly improve their experience. Let me know if something should be working better! vhf.dxview.org #HamRadio
- Reposted by Jon HarderThe Latest Ham On A Bike Blogpost is out. There's One Line I Don't Mind Waiting In. "THE GRAY-LINE or GREY-LINE". #AmateurRadio #HamRadio #grayline #greyline #DX #HFpropagation #GraylinePropagation Jon @ng0e.bsky.social you were referenced in this blog. hamonabike.blogspot.com/2025/09/ther...
- ANNOUNCEMENT: the VHF propagation map is being optimized for tablets and mobile devices. It is working much better for the smaller screens. There are a few differences between mouse- and touch-based interaction: vhf.dxview.org #hamradio
- Touching a footprint highlights a station, which is the same as a mouse-over. Touching an already highlighted station is the equivalent of clicking to get more details. There are still some rough edges and improvements continue.
- The VHF propagation map will start showing more activity. A coding error when translating from Rails to Rust caused some activity to be filtered inappropriately. vhf.dxview.org #hamradio
- Users may want to tweak some settings in light of these changes: In the Settings menu, try moving the opacity slider to down to the midrange to see the underlying map more clearly. To see even more activity, try sliding the filter slider all the way to the denser side.
- Reposted by Jon Harder[Not loaded yet]
