HamClock has always fascinated me, as it seems such an amazing program specifically set up for Amateur Radio. I have seen countless videos on it but the draw back was always needing to have a Raspberry Pi. While I am not afraid to get one, and learn how to use it, I just didn’t feel like taking the plunge into that world just yet. Though I think that world is about to come, and I will end up regretting not doing it sooner!
So, what is HamClock?
Glad you asked. According to their website (https://www.clearskyinstitute.com/ham/HamClock/) HamClock is a kiosk-style application that provides real time space weather, radio propagation models, operating events and other information particularly useful to the radio amateur.
It is designed to provide ham radio enthusiasts with real-time information about the sun’s position, ionospheric conditions, and DX cluster spots. HamClock is an open source application which is a tool for the shack providing live up to date information all on one screen. It was originally written by Elwood Downey WB0OEW.
HamClock displays a map showing the sun’s position, illumination (daylight/darkness), and the “grey line” (the transition between day and night). This information is crucial for understanding propagation conditions, as the grey line is often a prime time for DX (long-distance) communication.
Usually it needs to be installed on Quadra or lynix, but I have recently found out you can install it on Windows.
Installing HamClock on Windows
Guess what, this is possible, and may feel overwhelming at first, but after following the video below, I was able to do it in real time along with this video. I was shocked how easy it was and super surprised I had not done this earlier.
The instructions (a text file) are available via this link, and are referred to in the video. https://www.clearskyinstitute.com/ham/HamClock/hamclock-contrib/HamClock%20Windows10.txt So, have the instructions open while you watch the video. Please note, this is not my video and you should do this at your own risk – however it worked for me easily!
Before doing the video, I suggest you read all the points below it as there were a couple of things I changed.
The video starts with music, but just do what it says. Then the author will talk you through the steps after the initial install.
The bit I got stuck on was setting up Cluster in HamClock. This is about 12:50 into the video, perhaps it was because I had an updated version of HamClock since the above video was done. So, instead, I put in the following settings:

Setting Up HamClock
There are countless ways to set up HamClock. As a starting point, I stuck with the video above as he shows you how to from 13:30. Below is a link to that point in the above video.
This video below is from a friend who also shows you in great detail how to set up your HamClock to get the most of it. Some things are slightly different, but after seeing this, you can have an informed choice.
I found this video below very good also, as it goes into detail regarding the map in HamClock. As you will see it is done by the same person. He talks about the maps and how to customise it easily.
After a Windows Reboot
When you next do a windows reboot, you will need to restart HamClock. To do this, open a CMD window by typing CMD in the windows search menu.
Then type in :
wsl sudo hamclock &
and put in your password you made for lynx and you should be able to open it again. Make sure you do n ot close the comand screen until you are finished.
Summary
Below is what my HamClock looks like. I like the background “terrain” map as well as the night and day showing on the map. I would value your thoughts though, as I know I am about the last one to finally get onto HamClock.

With all of these tools, we should remember propagation shown is using data, but the rest of it is predictions based on knowledge.
If these propagation tools show there isn’t anything happening, always give it a try anyway. You never know without trying. You may be higher than other stations, or put out more power. You might just get an opening before other stations.
All the propagation websites are a summary of conditions recorded and sent in. HamClock is a good tool, it looks good, and gives you a lot of information on the one screen. You can adjust it easily also.
Please tell me your thoughts, and what you think. Do you use it? Perhaps you use it differently and have some advice for me and other readers. Hope you enjoyed the read.
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