Radio wave refraction depends on density of free electrons and frequency. Skip distance is tied to refractive index and height. Read more
Author: John VE6EY
Understand Radio Waves in Various Media
Let’s understand radio waves, and how they behave is different media including solid wire, free space and plasma. Read more
Basic HF Radio Propagation Refresher
Let’s do a level set on basic HF radio propagation through the ionosphere and around the world. Read more
My 2009 Acura TL – Wonderful Car
As I head into my 70’s, my 2009 Acura TL might just be my last personal car. And it’s been great to own and drive. Read more
High Frequency Aircraft Antenna
So, how does a modern airplane use shortwave radio successfully? You may wonder what kind of high frequency aircraft antenna are used. Read more
Shortwave Aircraft Radio Listening
If you want something else to listen to on your SDR, try shortwave aircraft radio listening for trans-oceanic flights. Read more
IoT Controller Main Loop – Running in Circles
Your IoT controller main loop is the heart of the matter. Running forever and responding to your commands. Read more
Setup Your Code – Ready to Run
Be prepared. Use the setup routine to setup your code ever time your IoT controller boots up. Read more
Discover MoCA – Thin Ethernet on Steroids
If your house is not wired for Ethernet, you should discover MoCA. Multimedia over Cable Alliance is the old thin ethernet on steroids. Read more
IoT Controller Command Protocol
Designing and using an IoT controller command protocol is as simple as typing some text. Ideally, the system should be foolproof. Read more