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If either of these things appear to be working, then the Javascript is being responsive. If so, I would try leaving it zoomed in to an active area for a while and see if the refreshing goes back to normal interval.

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The other thing to try is going to the menu (after waiting a minute or more) and selecting refresh. This will show the number of footprints updated, added, and deleted. The numbers start blank (-) and after a brief pause are filled in with the refresh data.

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There are a couple of things you can check to see if other kinds of refreshing are working. If you zoom the map into an area that should be active, do new footprints come up?

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Your browser picked up an empty Javascript file originally and was hanging on to it. Once the full file was restored and a version number updated, then your browser was able to pick up the correction.

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Jon Harder @ng0e.bsky.social · 07/08/2026

Try reloading your browser. That should correct the problem. Let me know if that works or not.

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The server was down 45 minutes (or less), but a javascript error was causing some display issues. Refreshing should pick up the correction. vhf.dxview.org hf.dx.view.org #HamRadio

vhf.dxview.org

VHF Real Time Propagation

An interactive map that shows real time, worldwide VHF activity highlighting enhanced propagation typical to tropospheric ducting.

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Jon Harder @ng0e.bsky.social · 07/08/2026

Try refreshing and it should come back. That was a javascript compression error that slipped through.

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Jon Harder @ng0e.bsky.social · 05/08/2026

ALERT: the dxview propagation maps will be offline Thursday starting around 0930Z to transition to new server hardware and new database. Hopefully the downtime will be less than two hours, but it is possible that unforeseen problems will extend that time. hf.dxview.org vhf.dxview.org #hamradio

Server room. Credit: Tristan Schmurr, https://www.flickr.com/photos/kewl/

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Jon Harder @ng0e.bsky.social · 24/07/2026

I wiped out the whole cache of tiles and restarted the tile server. It seems back to normal and blazing fast again. I wonder how long it has been working in this sub-optimal way (aside from not working at all as you noted; that was on the order of minutes).

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Jon Harder @ng0e.bsky.social · 24/07/2026

* something not right …

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Jon Harder @ng0e.bsky.social · 24/07/2026

How about now? There is not something right about the map tile server and I'm just managing to make it worse.

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Jon Harder @ng0e.bsky.social · 12/07/2026

I’ll have to dig into this problem more. Unfortunately my internet connection has failed and I’m the middle of a 10 day wait for a service call (a reality of rural living). So I’m unable to do much now. I’ll look at it when I can. The best thing you can do now is to keep reporting it.

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Jon Harder @ng0e.bsky.social · 26/06/2026

There must have been a corrupt packet that should have been ignored. I've removed your station from the display and will check back in on it later in the day (it will correct itself). Thanks for the heads up.

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Jon Harder @ng0e.bsky.social · 16/06/2026

The HF+ propagation map at hf.dxview.org now has a view of DX Clusters. Look for it in the main menu. #hamradio

A map centered on Europe showing DX Clusters. Clusters are represented by colored circles (red, orange, yellow) indicating connectivity to the select node, GB7VAX.

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Jon Harder @ng0e.bsky.social · 15/06/2026

The workers probably don't know the specifics of what is making this possible either. Jobs are always tough to come by in this area. The young worker digging in my lawn was very happy switch from construction to a $17/hr job. They work 12 hours a day and then get 4 winter months off (frozen ground).

Jon Harder @ng0e.bsky.social · 15/06/2026

Broadband (fiber optic) is being rolled out in my very rural MN community right now. They have been working on it most of the Spring. My house has been wired to an external junction box (no inside equipment yet). In general, I don't believe community members have any idea why this is happening.

Jon Harder @ng0e.bsky.social · 07/03/2026

A 24 hr prediction chart is shown. You will see the MUF frequencies for the day, which is typically a good choice, but select the next lower band to see what that looks like too. The time scale is 0000-2400 UTC. The prediction depends on the sunspot numbers, so check for a new prediction every day.

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Jon Harder @ng0e.bsky.social · 07/03/2026

Once the map is drawn, select "MUF" at the top of the screen. Is your location covered by one of the band colors? That band has propagation to Bouvet now your area now! Next, click on your location on the map and select "show prediction" at the top of the map. Make sure "MUF" is still selected.

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Jon Harder @ng0e.bsky.social · 07/03/2026

Would you like an edge on working the Bouvet Dxpedition? Here is how to use the dxview map to your advantage. First view the map from the perspective of Bouvet. Use this link: hf.dxview.org/perspective?... #HamRadio #dx

hf.dxview.org

HF Real Time Propagation

HF propagation map from the perspective of grid square JD15QN

Jon Harder @ng0e.bsky.social · 03/03/2026

The Clarity has a smallish tank and I can't get even $20 into it at these prices. Since it is a plugin, I can get well over 150 mpg on one tank of gas.

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Jon Harder @ng0e.bsky.social · 03/03/2026

It's not quite to $3 here in rural Minnesota. I thought yesterday would be a good day to fill all the vehicles as it wouldn't be less any time soon. I paid $2.779. The last time at the same station it was 2.619. The main vehicle is a plugin Honda Clarity and which may go many weeks until next fill.

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Jon Harder @ng0e.bsky.social · 18/02/2026

SW Minnesota is in the midst of another snow storm the NWS failed to predict. A lot of misses this year, and it can be dangerous. Has something changed at NWS? They used to give us a heads up days ahead.

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Jon Harder @ng0e.bsky.social · 21/01/2026

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

A screenshot the new HF+ propagation map home page showing sections labeled "View map", "About", "News", "Donations", "Amateur Radio", and "Sources".

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Reposted by Jon Harder

Steve Herman @newsguy.bsky.social · 20/01/2026

The authoritarian government of Belarus is purging the country’s ham operators, charging them with treason and seizing their radio equipment. steanlab.medium.com/mayday-389f5...

steanlab.medium.com

MAYDAY from the airwaves: Belarus begins a death penalty purge of radio amateurs

Behind the absurdity of charging Baofeng users with ‘High Treason‘ lies a terrifying intellectual genocide and an urgent call for…

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Jon Harder @ng0e.bsky.social · 14/01/2026

Two cluster servers are checked simultaneously, rotating through dozens located in North America, one of which is usually WC2L-1, dxc.wc2l.com:7373 or N5UXT, dxc.n5uxt.org:7373 This may change in the future. Jon, NG0E

dxc.wc2l.com

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Jon Harder @ng0e.bsky.social · 31/12/2025

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

A starting page layout divided into multiple sections titled "View map", "About", "News", "Donations", "Amateur Radio", and "Technologies".

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Reposted by Jon Harder

kren @kren.bsky.social · 26/12/2025

I've been thinking about this sign for 6 months. a phrase I'll treasure forever. a metaphor with boundless potential

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Reposted by Jon Harder

Mark Lemley @marklemley.bsky.social · 06/11/2025

Australia 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...

electrek.co

Australia has so much solar that it's offering everyone free electricity

Australia's extensive solar power penetration makes so much energy that the government wants to offer free electricity at peak hours.

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Jon Harder @ng0e.bsky.social · 16/12/2025

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

Jon Harder @ng0e.bsky.social · 16/12/2025

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

Map icons that include a red heart for access a donations menu

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

A VHF propagation map showing the interconnecting hops of many stations arching over a region in Europe.

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Selecting the "multiple" option allows station selections to accumulate. The keyboard shortcut alt- or option-click is equivalent. 2/3 vhf.dxview.org #hamradio

A VHF propagation map showing two different stations selected simultaneously.

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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

You should let me know anyway. I try to test everything before uploading, and this time it was such a trivial change I didn't bother. That was a mistake!

This feature has been changed from the 'r' key to 'c' to correspond with the menu that pops up and offers a "connected" option.

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Sorry about that -- Javascript error I didn't catch. The patch is uploading right now and should be live in a few minutes. Just refresh your browser. Thanks for the head up.

That trips me up too sometimes. The underlying map relies on OpenLayers interface and the OpenSteetMap. They are both open source and free to use. OpenLayers would support other maps if one can be found that is stable and well supported. I haven't found one.