Measuring An Unknown Velocity Factor

When is the speed of light not the speed of light? Of course, that’s a trick question. The speed of light may be constant, but just as sound travels at different speeds in different media, el…

Comcast & Spectrum Are Struggling As Americans Stop Signing Up For Internet As Part of Cord Cutting 2.0 | Cord Cutters News

People continue to cut ties with cable internet providers and reports from MoffettNathanson show cable broadband subscriber growth numbers are plummeting year over year. In the third quarter of 2020, broadband subscriber growth was at its highest...

A Tale Of Two Pulse Modulators

In the realm of test equipment, there are a number of items that you don’t know you need until you need one. That’s probably the case with the HP11720A pulse modulator. [Tom] acquired t…

Don’t Let The Baluns Float Over Your Head

Most ham radio operators will build an antenna of some sort when they first start listening or transmitting, whether it’s a simple dipole, a beam antenna like a Yagi, or even just a random wi…

Printing Antennas On Circuit Boards

Yagi-Uda antennas, or simply “Yagis”, are directional antennas that focus radio waves to increase gain, meaning that the radio waves can travel further in that direction for a given tra…

Homebrew Wattmeter Pays Homage To Sturdy Original

If there’s one instrument that hams and other radio enthusiasts covet, it’s the venerable Bird 43 Thruline wattmeter. The useful RF tool has barely changed in the nearly 70 years since …