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

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 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

The 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

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

A website that lets you select a country or state and move it around a Mercator projection map to yield better size comparisons. thetruesize.com, created by James Talmage and Damon Maneice

Today some corrections and enhancements were applied to the VHF propagation map. The changes improve the interaction as the pointer is moved over active stations. A white outline adds contrast to the footprint and when selected the paths are clearly revealed. vhf.dxview.org #hamradio

ANNOUNCEMENT: The HF propagation map now has an option to display the gray line. This feature is activated with a checkbox in the main menu. hf.dxview.org #HamRadio

Of all the the lighthouses on the air this past weekend, 7S0SFJ in Sweden is one of the unique ones. The station is on the "Finngrundet," a lightship that was in service from 1903 to 1969. www.sjohistoriska.se/en/visit/the... #hamradio #lighthouse

Here is an unexpected mid-ocean HF propagation data point. KQ6RS reports this WSPR equipped buoy drifting in the North Atlantic is a high school project. During your station's off time, set up WSPR on 20m to see if it picks up the 0.01W signal! www.qrz.com/db/KQ6RS hf.dxview.org #hamradio

VY0ERC is another far-north amateur operation on the HF propagation map. The club station is at the Eureka Weather Station on Ellesmere Island in Nunavut (Canada). Listen for them on FT8. FT8 activity: rbn.telegraphy.de/activity/VY0... Ellesmere propagation: hf.dxview.org/perspective/... #hamradio

Have you ever wondered why the HF map has propagation from the far north? Polarstern is a German polar research vessel. It is active as DP0POL using WSPR on 7, 10, 14, and 18 MHz. Today it is above 84º N latitude. Follow DP0POL on WSPR: www.wsprnet.org/olddb?mode=h... hf.dxview.org #hamradio

The HF propagation predictions charts are working better after correcting errors introduced in the conversion to Rust. The chart shows hours of the day going from left to right, starting at 0000Z (UTC). The red vertical bar is the current time. Color coding shows SSB, CW, FT8 or WSPR. #HamRadio

Drawing areas of propagation that cross the 180th meridian (International Date Line) on the HF map have always been a mathematical challenge. A bit ago an update was uploaded that finally gets it right (I think). Errors had been showing up particularly on 20 meters. hf.dxview.org #hamradio

The HF propagation map is now running on all Rust code. An error in the activity view resulted in missing data, including a blank map for 10 Mhz. That and some other minor things have been fixed. hf.dxview.org #hamradio

Ever since switching the VHF (APRS) data gathering app to Rust there has been a persistent memory leak. I finally had time to dig in and resolve the problem. Now it stays around the 150-160M range. In contrast the HF data gathering app, sits around 100M. vhf.dxview.org #hamradio

The VHF site was having problems related to file compression on some older Safari browsers. I believe that is all sorted out. Compression is fairly easy to implement with the Rust system being used, but leave it to me to overthink things. vhf.dxview.org #hamradio

The HF+ propagation map ( hf.dxview.org ) is most useful when you select your location by clicking on the map (or entering your grid square, if you know it). This allows you to see where in the world you are likely to make contacts on any band. #hamradio

The VHF propagation map ( vhf.dxview.org ) has recently completed conversion to the Rust language, away from Ruby on Rails. It is very fast and is improving as performance updates are applied. #hamradio

I am an amateur radio operator who maintains the real-time HF+ and VHF propagation sites. The HF map has two modes: global activity per band and propagation unique to the user's location. The VHF map is useful for showing areas of enhanced propagation, typically tropospheric ducting. #hamradio