Category Archives: radio hacks

Shoot the Moon with this Homebrew Hardline RF Divider

You can say one thing for [Derek]’s amateur radio ambitions — he certainly jumps in with both feet. While most hams never even attempt to “shoot the Moon”, he’s building out an Earth-Moon-Earth, or EME, setup which requires this little beauty: a homebrew quarter-wave hardline RF divider, and he’s sharing …read more

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Posted in amateur radio, Coax, dielectric, Earth-Moon-Earth, EME, ham, hardline, impedance, moon bounce, radio hacks, transformer | Leave a comment

Two Perspectives on James Clerk Maxwell and His Equations

We are unabashed fans of [The History Guy’s] YouTube channel, although his history videos aren’t always about technology, and even when they are, they don’t always dig into the depths that we’d like to see. That’s understandable since the channel is a general interest channel. However, for this piece on …read more

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Posted in history, james clerk maxwell, maxwell's equations, radio hacks, science | Leave a comment

Quantum Sensor Receives from 0 Hz to 1000 GHz

Although it isn’t that uncommon to have broadband radio coverage in a single device, going from 0 Hz to 1000 GHz with one antenna and receiver is a bit much. But not for the US Army it seems, because they’ve developed a quantum sensor that can cover that range.

The …read more

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Posted in army, quantum radio, quantum sensor, radio hacks, Rydberg Atoms, science | Leave a comment

High Power LoRa and Tropospheric Reflection Experiments

We’re used to LoRa as a free-to-use digital radio protocol allowing not-very-high data rate communications over distances of a few miles. It’s made all kinds of distributed sensor systems a breeze, and some experimenters have made an art of achieving communication over hundreds of miles. But what would happen if …read more

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Posted in 435MHz, amateur radio, LoRa, radio hacks, tropsphere | Leave a comment

Link Coupling Antenna Tuner Wordless Workshop

Remember “Wordless Workshop” in Popular Science? [Roy Doty] illustrated a household problem and the solution for it cobbled up in the main character’s garage workshop. We wonder what [Roy] would have done with YouTube? Maybe something like the video from [VE2TAE] and [VE2AEV] showing their link coupling antenna tuning build. …read more

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Posted in air variable capacitor, antenna tuner, capacitor, coil, ham radio, inductor, link coupling tuner, radio hacks | Leave a comment

Get Your Weather Images Straight from the Satellite

[Josh] has a series called Ham Radio Crash Course and a recent installment covers how you can grab satellite images directly from weather satellites. This used to be more of a production than it is now thanks to software defined radio (SDR). Josh also has another project using a 3D …read more

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Posted in noaa, radio hacks, satellite, space, weather satellite, WXtoIMG | Leave a comment

Raising the Titanic’s Radio Room

For some reason, of all the ships that have sailed the oceans, it’s the unlucky ones that capture our imagination. Few ships have been as unlucky as the RMS Titanic, sinking as she did on the night of April 15, 1912 after raking across an iceberg on her maiden …read more

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Posted in Featured, history, Interest, Marconi, Original Art, radio, radio hacks, rov, salvage, spark gap, titanic | Leave a comment

Multi-Band Receiver On A Chip Controlled By Arduino

The Silicon Labs Si4735 is a single-chip solution for receiving AM, FM, and shortwave radio. With a bit of hacking, it even supports single sideband (SSB). All you’ve got to do is provide it with a suitable control interface, which [Ricardo Lima Caratti] has done with his recent project.

Using …read more

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Posted in Arduino libraries, parts, radio, radio hacks, receiver, Si4735, Si47xx | Leave a comment

A Patch Antenna Is Just A Rectangle, It Should Be Easy To Design, Right?

If a grizzled RF engineer who bears the soldering-iron scars of a thousand projects could offer any advice, it would be that microwave antennas are not a field to be entered into lightly. Much heartache is to be saved by using an off-the-shelf design, and only the foolhardy venture willingly …read more

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Posted in antenna, microwave, patch antenna, radio hacks, RF | 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