I always try to avoid using "between-series" adapters - there are so many out there with questionable quality. Sometimes these ada...

I am just about done with my second generation N2PK VNA . The first one I've built is mainly for portable / field use, while this larger...

I've always wondered how well a parabolic mic works. Here is my experimental setup for testing such DIY parabolic microphone. It is a g...

I had my original Leatherman PST (Pocket Survival Tool) for many years and when I decided to upgrade to Leatherman Wave, I was a bit disap...

Wire Antenna's enemy #1 is the wind (Corrosion being #2, Lightning is a topic of entirely different discussion). In high winds, tall tre...

These are the final touches to the Digital Scope System and the Antenna Launcher. I made a hood out of a sheet soft closed-cell foam and att...

Sometimes great ideas shine, just because of their simplicity and I think I had one the other day. (You can tell that I am modest person :-)...

Update: If you are looking to buy an Antenna Launcher for Field Day, please check this post. Tony Montana's famous words as the answe...

Lately, I've been working on a compete update of my flight simulator. The new configuration is a setup of 4 machines. The server machine...

The N2PK VNA frequency range can be extended by using transverters . While the N2PK VNA covers the entire 0.05 to 60 MHz, additional frequ...

Lately, I've been obsessing with calibration standards. I know that it is an overkill to use lab-grade calibration kit rated for up to 2...