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299 Posts
Retired physics teacher. Ham radio club president. Interested in lots of things. #POTA #SOTA #Winlink #Camping #Hiking

International Amateur Radio Union (IARU):
Provisional Results Marconi Memorial #VHF Contest

#VHF

https://www.iaru-r1.org/2026/provisional-results-marconi-memorial-vhf-contest-3/

Provisional Results Marconi Memorial VHF Contest | International Amateur Radio Union (IARU)

My sister found this gem in Dad’s papers. Dad was a trailblazer #BlacksInSTEM #BlackMastadon #BlacksInScience #BlacksInMath

Sumy, a center of Ukrainian culture, lives in the crosshairs of a new Russian offensive
https://www.npr.org/2025/07/11/g-s1-75840/sumy-ukraine-russia-offensive?utm_source=flipboard&utm_medium=activitypub

Posted into Ukraine Invasion — Explained @ukraine-invasion-explained-npr

We had a blast at the Physics and Engineering Festival today! Our club took the opportunity to demonstrate concepts and applications from all over the magical world of radio. We discussed how signals can get around the world, how computers interact with radio, and how to get involved! We are thankful for the opportunity to participate and look forward to doing even more demonstrations next year!
@qrper Years ago, took my 891 to a summit only to find that I left the power cable at home. No contacts, not even a VHF contact. You asked for “most embarrassing” which is a tough ask. :)
Today's MacMost video: Using Links With Highlights On Mac and iPhone
A new feature in macOS 15.2 and iOS 18.2 is the ability to create links with highlights in Safari. These links take the recipient directly to text on a web page and highlight it.
https://macmost.com/using-links-with-highlights-on-mac-and-iphone.html
Using Links With Highlights On Mac and iPhone

A new feature in macOS 15.2 and iOS 18.2 is the ability to create links with highlights in Safari. These links take the recipient directly to text on a web page and highlight it.

MacMost.com
thunderstorm is here ⛈️
I ran another radio propagation experiment overnight using the WSPR-2 mode. Five times an hour for 2 minutes my transmitter on the 10-meter band sent a single watt of power to my Moxon antenna beaming NE. As the reception chart shows, after my sunrise, the signal was detected as far as 7700 km away (in Brazil). It was also received by stations throughout Western Europe. #hamradio
Field Spotter - A mobile spotting utility for outdoor radio

Hi! I’m Ian, M0TRT. I haven’t posted here before, so hopefully this is okay to post about - I have made a utility which I hope SOTA folks will find useful. For a while I’ve wanted a mobile map of SOTA (and POTA, etc) spots that’s designed to be used in the field. The SOTA activation map is great but definitely “desktop first”! I couldn’t quite find what I wanted, so I made it myself. I called it Field Spotter, and it’s released today. You can access it at https://fieldspotter.radio/ . It’s de...

SOTA Reflector

Just saw M0TRT post his Field Spotter website for display of spots for #SOTA #POTA #WWFF combined. Quite nice with excellent filter capability.

https://fieldspotter.radio/

#HamRadio

Field Spotter

A mobile Amateur Radio spotting tool for POTA, SOTA, WWFF and similar programs