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Mint-Tin Software Defined Radio

Screen shot 2013-01-23 at 11.13.06 AM

Steve, AKA Flickr user 3dking, built this mint-tin, PCB-less(!) SDR upverter, which switches your software-controlled Ham radio from VHF to HF. I built another up-converter, this time in to an Altoids tin and stuck a low quality label on the tin lid. This version includes the switching relay to connect... Read more »

Bug-in-a-Book

In this fun and easy project (which originally appeared in the Spy Tech edition of Make Magazine), you’ll connect a shirt-pocket “amplified listener” hearing aid with an in-car FM transmitter to create a wireless bug. Then you’ll tuck them inside a hollowed-out book with the microphone (mic) concealed by the... Read more »

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