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5 hours ago 3 minute read 1 comment Investigator515 $0.05
Let’s have a look at the new ESP-SDR firmware. With RAM and general hardware prices going through a solid spike, microcontrollers like the ESP32 start to become pretty attractive as candidates for cheap hardware projects. These modern iterations ar...
2 Sep 2026 5 minute read 0 comments Investigator515 $0.07
L-band satellite traffic is a great next step when you outgrow weather satellites. If you remember the recent satellite dish article, where we looked at how old dishes can be repurposed, you might recall that we specifically called out ACARS as a sys...
19 Aug 2026 4 minute read 1 comment Investigator515 $0.07
Understanding how a shielded box would change how we think about RF security. As you read this, what is broadcasting in the room around you? You probably have a phone, a wristwatch, maybe some wireless headphones, perhaps. In a digital world, it’s no...
14 Jun 2026 8 minute read 1 comment Investigator515 $0.08
On January 31, 1954, a man in an overcoat stepped out from a 13th-floor window of his Manhattan apartment. He’d addressed an envelope to his wife, Marion, and left it on a table. At 63 years old, the man who gave the world FM radio died on the street...
27 May 2026 6 minute read 7 comments Investigator515 $0.05
In this previous article, we took a look at how to use Satdump paired with the RTL-SDR and a modest antenna to collect live weather imagery from space.Shortly after this, however, it was announced that the NOAA Automatic Picture Transmission (APT) sa...
10 May 2026 3 minute read 0 comments Investigator515 $0.08
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...
6 May 2026 6 minute read 1 comment Investigator515 $0.18
If you’ve been reading for a while, you already know that we are firm fans of the Raspberry Pi. While the value equation is different to what it was in the past, it’s still a great system for deploying projects quickly and easily. Despite this, with...
8 Apr 2026 6 minute read 1 comment Investigator515 $0.08
Spaceflight communications have changed dramatically since Apollo. If you’re reading this within a few days of it being published, four astronauts are currently in deep space heading back to the moon for the first time in decades. They are sending t...
22 Feb 2026 4 minute read 0 comments Investigator515 $0.12
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 $0.19
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...
