WebPortable unit made from an old PC case houses several radios and a cellphone. A gel-cel and charger is built into the bottom of the case. It weighs about 20 lbs. ... Credit Card. Power. A few weeks ago, we published a short post about a credit card crystal radio from an eBay seller in the UK. I purchased a kit–at $17-18 US shipped, it’s ... WebMay 1, 2015 · This is my third crystal radio made from credit cards. You can make crystal radios out of expired credit cards, and listen to AM radios without battery. Just...
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WebDec 4, 2024 · The car had a separate battery for the radio and a dynamotor to generate high voltage for the tubes. Although many radio enthusiasts found ways to add receivers to their cars in the 1920s, it ... WebJun 21, 2024 · Billy Cheung decided to build a crystal radio using a rather unconventional detector – the smart chip in a common credit card. This is possible because the smart chip on many credit cards contains a diode. It’s then a simple matter of hooking up the right pads on the credit card to the rest of a crystal radio circuit, and you’re all set. tours a washington d.c.from nyc
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WebJun 3, 2024 · Credit Card Crystal Radio. Many thanks to SWLing Post contributor, Paul Evans, who shares this article from Hackaday that … WebApr 21, 2015 · Credit Card Crystal RadioTurn your expired credit card into a Crystal Radio.Other Credit Card up-cycling ideas to make Radios, Retro-Games out of expired cre... WebSKU: SB-RADIO. Science Buddies staff scientists worked long and hard and with selectivity to develop a crystal radio kit that will: make your radio project successful, and. avoid the many problems of the amateur radios at toy stores that are called "crystal radios". With this Crystal Radio Kit, you will become a radio experimenter as you learn ... tours bad bunny 2022