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10 May 2026 3 minute read 0 comments Investigator515
Radio can be magical stuff sometimes. While the internet would provide a technical revolution, there’s still something distinctly fun about using wireless signals to communicate and transmit data. The smartphone wrapper takes this out into the world...
22 Feb 2026 4 minute read 0 comments Investigator515
Getting started can be expensive, but it doesn’t have to be. RF-capable hardware can be expensive, particularly if you’re looking to transmit. And, the higher you go in the frequency range, the truer this is, with some microwave-capable systems being...
9 Feb 2026 6 minute read 0 comments Investigator515
The Portapack H2 is a great way to enter the world of radio. Cheap hardware is (mostly) amazing. The TinySA gives us access to spectrum monitoring for less than $200 delivered, and the Nano-VNA gives us capable test equipment that's ridiculously chea...
11 Jan 2026 4 minute read 0 comments Investigator515
2026 is already shaping up to be an exciting year for the publication. 2025 was a great year for the publication. Thanks to new feature writers, new affiliates and the support of Medium as the place to build and grow, we were able to take the publica...
7 Oct 2025 4 minute read 0 comments Investigator515
The HackRF one isn’t without its flaws. But when paired with the Portapack system and the Mayhem firmware, it provides a useful, all-in-one system that is a great educational tool that beginners can use to learn about the radio spectrum and various t...
13 Jan 2025 5 minute read 1 comment Investigator515
In earlier articles, we covered the concept of the Van EckPhreak, which discussed how electromagnetic radiation (EMR) could be used to exploit private information. One point that we missed in that article though, was how an entire research field woul...
7 Dec 2024 5 minute read 0 comments Investigator515
In this previous article we looked at some of the fundamentals around coaxial cable, including some of the characteristics that we might see when using coaxial cable in various installations. In today’s article, we’ll be exploring an older feedline t...
