Dave,
Questions:
Do you need a separate antenna on each of the phase-locked receivers?
My K3 can do diversity reception with two antennas. Is there a way to use the
K3's audio to measure the arrival angle?
73,
Steve
N6SJ
-----Original Message-----
From: TowerTalk <towertalk-bounces@contesting.com> On Behalf Of David Gilbert
via TowerTalk
Sent: Friday, April 10, 2026 12:08 AM
To: towertalk@contesting.com
Subject: [TowerTalk] Arrival Angle Application
Not too long ago I mentioned that I was working on a application that would
hopefully measure and display the arrival angle of an RF signal by feeding the
audio from two phase locked receivers into the sound card of a computer and
doing the processing on a browser web page. The application is now functional
and I have created a YouTube video describing what I tried to do, how the
application works, and to what degree I was successful. At 50 minutes it's
pretty long so if you decide to watch it you might want to click on the YouTube
settings icon at the lower right to speed it up. My production skills are
limited so please take that into account.
The YouTube video is here:
https://youtu.be/MxRaYSRMPE4
The actual application is here:
http://www.ab7e.com/ArrivalAngle.html
You can run the app directly from my web page but you can also just download it
(right-click, save page as .html) and run it locally on your own computer.
It's totally free and comes with no guarantees of literally anything.
I'd appreciate any comments or suggestions, and I'll try to answer questions.
73,
Dave AB7E
p.s. The application was written by OpenAI's Codex coding agent. I created
the layout and the prompts that specified how it should work, and I did a lot
of refining, but I didn't write a single byte of the actual code. We're in a
new era of custom software for almost any use no matter how limited the
audience may be for it.
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