Category Archives: sdr

TEMPEST Comes To GNU Radio

As we use our computers, to watch YouTube videos of trucks hitting bridges, to have a Zoom call with our mothers, or even for some of us to write Hackaday articles, we’re unknowingly sharing a lot of what we are doing with the world. The RF emissions from our monitors, …read more

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Posted in gnu radio, radio hacks, sdr, tempest | Leave a comment

GPU Turned Into Radio Transmitter To Defeat Air-Gapped PC

Another week, another exploit against an air-gapped computer. And this time, the attack is particularly clever and pernicious: turning a GPU into a radio transmitter.

The first part of [Mikhail Davidov] and [Baron Oldenburg]’s article is a review of some of the basics of exploring the RF emissions of computers …read more

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Posted in exfiltration, exploit, gpu, harmonics, news, power management, radeon, RF, sdr, security hacks, shader, side-channel attacks, uhf | Leave a comment

An FPGA And A Few Components Can Make A Radio

There was a time when making a radio receiver involved significant work, much winding of coils, and tricky alignment of circuitry. The advent of Software Defined Radio (SDR) has moved a lot of this into the domain of software, but there is of course another field in which a radio …read more

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Posted in am, fpga, radio, radio hacks, sdr | Leave a comment

Homebrew Loop Antenna Brings the Shortwave World to You

Radio may be dead in terms of delivering entertainment, but it’s times like these when the original social network comes into its own. Being able to tune in stations from across the planet to get fresh perspectives on a global event can even be a life saver. You’ll need a …read more

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Posted in balun, Coax, coaxial, loop, noise, oroid, radio, radio hacks, sdr, shortwave, unun | Leave a comment

Software-Defined Radio Made Easy

Just a few decades ago, getting into hobby radio meant lots of specialty hardware, and making changes to your setup to work on various frequencies wasn’t particularly easy. Since software-defined radio (SDR) came onto the scene in an accessible way for most of us, this barrier to entry was reduced …read more

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Posted in custom, debian, dragonos, linux, radio, radio hacks, sdr, software, software-defined radio | Leave a comment

The Libre Space Foundation Reviews Software Defined Radios

If you want to go to the next level with software defined radio (SDR), there are a lot of choices. The RTL-SDR dongles are fine, but if you get serious you’ll probably want something else. How do you choose? Well, your friends at the European Space Agency Libre Space Foundation …read more

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Posted in ESA, radio hacks, sdr, software-defined radio | Leave a comment

Software Defined Everything with Mike Ossmann and Kate Temkin

Software defined radio has become a staple of the RF tinkerer, but it’s likely that very few of us have ever taken their software defined toolchain outside the bounds of radio. It’s an area explored by Mike Ossmann and Kate Temkin in their newly published Supercon talk as they use …read more

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Posted in 2019 Hackaday Superconference, cons, gnu radio, gnu radio companion, Hackaday SuperConference, Kate Temkin, michael ossmann, radio hacks, sdr, software hacks | Leave a comment

Closed Ham Radio Peripheral Reveals Its Windows Secrets

The student radio society in Trondhjem owns a Flex 6500-radio, with its associated Maestro panel peripheral. This is a software defined radio, and the Maestro is a computer containing just enough of an embedded version of Windows to run its front-end software. Unfortunately for our Norwegian radio amateur friends it …read more

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Posted in flexradio, radio hacks, sdr, windows | Leave a comment

RF Shield Turns Arduino (And PC) into Shortwave Radio

Microcontrollers tend to consume other kinds of electronics. A project you might once have done with a 555 now probably has a cheap microcontroller in it. Music synthesizers? RC controllers? Most likely, all microcontroller-based now. We always thought RF electronics would be immune to that, but the last decade or …read more

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Posted in Arduino Hacks, elektor, radio hacks, sdr, shield, software-defined radio | Leave a comment

Software Defined Radio Gets Physical Control

Software Defined Radio (SDR) is a great technology, but there’s something so satisfying about spinning a physical knob to cruise the airwaves. Wanting to restore that tactile experience, [Tysonpower] purchased a cheap USB volume knob and set out to get it working with his software. Unfortunately, getting it up and …read more

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Posted in dfu, input device, Microcontrollers, peripherals hacks, reverse engineering, sdr, stm32, usb hid | Leave a comment