Radio wave refraction depends on density of free electrons and frequency. Skip distance is tied to refractive index and height. Read more
Category: Radio
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
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
ANAN-7000 DLE MKII Review – Six Months In
A year has passed since I ordered my ANAN radio, and six months since it arrived. Time for my ANAN-7000 DLE MKII Review. Read more
Remote Antenna Switch Project – Why Bother?
Why bother with a lengthy and oft frustrating remote antenna switch project? Well, the joy of success, of course. Read more
Windows Desktop Controller for Loop Array Switching
While my dual channel switch can be run over any TCP socket, I though it might be fun to program a Windows desktop controller using Delphi. Read more
Loop Array Distribution System for Diversity Reception
I finally have a noise-free loop array distribution system up and running. Performance is near perfect and I use it every day. Read more
Remote Antenna Switch Enclosure – Plastic or Metal
My 6:1 remote antenna switch enclosure turned out well. It’s made from plastic with metallic spray for shielding. Read more