Category Archives: radio

Tackling Trunked Radio with Software

For those starting to wade into radio as a hobby, one of the first real technical challenges is understanding trunked radio systems. On the surface, it seems straightforward: A control channel allows users to share a section of bandwidth rather than take up one complete channel, allowing for greater usage …read more

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Posted in amateur radio, dongle, ham radio, radio, radio hacks, RTL-SDR, software, software-defined radio, trunked | Leave a comment

Credit Card Chip Used To Make Crystal Radio

Perhaps the simplest radio one can build is the crystal radio. Using a diode as a detector, the design generally uses less than 10 components and no battery, getting its power to run from the radio signal itself. [Billy Cheung] decided to build a crystal radio using a rather unconventional …read more

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Posted in credit card, crystal radio, radio, radio hacks | Leave a comment

Pulling A Crystal By Grinding It

If you own a radio transmitter, from a $10 Baofeng handheld to a $1000 fancy all-band transceiver, setting the frequency is simply a case of dialing in where you want to go. A phase-locked-loop frequency synthesizer or a software-defined radio will generate your frequency, and away you go. There was …read more

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Posted in am, crystal, radio, radio hacks, Top Band | Leave a comment

The Lost Art Of Component Scavanging

With the easy and cheap availability of parts by Internet mail order, it’s easy to forget that acquiring electronic components was once a more tedious process, and it was common to use salvaged parts because they were what you had. Scouring a panel from a dumpster-find TV for the right …read more

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Posted in cb, radio, radio hacks, ua703 | Leave a comment

Odd Crosley Radios From The 1920s

You may sometimes see the Crosley name today on cheap record players, but from what we can tell that company isn’t connected with the Crosley Radio company that was a powerhouse in the field from 1921 to 1956. [Uniservo] looks at two of the very early entries from Crosley: the …read more

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Posted in Crosley, radio, radio hacks, teardown, TRF | 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

A Dangerous Demonstration of the Power of Radio

Terrestrial radio may be a dying medium, but there are still plenty of listeners out there. What would a commute to or from work be without a check of “Traffic on the Eights” to see if you need to alter your route, or an update of the scores from yesterday’s …read more

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Posted in am, antenna, broadcast, corona, discharge, modulation, plasma, radio, radio hacks, tower | 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

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