Build a completely batteryless AM radio receiver, and explore the airwaves with Weekend Projects. This radio only requires a few hours to assemble, and you’ll be able to tune in to transmissions within a range of around 25 miles.
From maker Blair Kelly: “Arduino Wifly Mini is a remotely operated vehicle that communicates over a WiFi network, can be controlled with an XBOX 360 or PS3 controller, or G27 steering wheel, or any other controller that can be manipulated with Processing’s ProControll library.”
November 5, 2011 is the 66th anniversary of the first FM transmission in 1935 from Yonkers, NY, by Carmen “Randy” Runyon W2XAG. On Saturday, a network of Tesla special event ham radio stations will be on the air helping to raise awareness of the effort to purchase the Wardencyffe laboratory and restore it into a science museum.
Working on the latest Weekend Projects Newsletter, about the Aircraft Band Receiver, sparked my own interest. Of course, like other readers, I had questions about hearing amplitude modulated (AM) sound on a FM-expanded receiver. And like any good blogger, within minutes, I had more opened tabs than I could deal with. I saved some […]
Craig Smith of Firefly Workshop (South Milwaukee, WI) With my crystal radio projects, I recently made a dual coil variometer tuner. Connected to a diode, crystal earphone, antenna & ground wires (no batteries) I tuned in 1540 KXCL Waterloo Iowa from 270 miles away here in Milwaukee. The coils were wound on a segment of […]
The awesome Craig Smith is at it again. He continues to explore the venerable crystal radio, now focusing on miniaturization. And that, of course, means on thing: Mint Tin Crystal Set! Craig writes… I’ve made a half dozen battery-free crystal radios in about eight weeks. But I always wanted to try to stuff one inside […]
Craig Smith (South Milwaukee, WI) writes: With all of the junk I accumulated, I thought it would be neat to make a crystal radio as a low impact project in the evenings. I unwound the coated wire from a small useless 115V brushless motor that I almost tossed out several times, and wound it about […]
