The classic crystal radio was an oatmeal box with some wire and a few parts. [Michael Simpson] has something very different. He found an assembled Philmore “selective” radio kit. The simple kit had a ...

The National Association of Broadcasters has opened the 2024 Crystal Radio Awards entry window. The Crystals will again honor ten exemplary stations that have demonstrated a profound commitment to ...

The National Association of Broadcasters has announced a significant change for the 2025 NAB Crystal Radio Awards. Instead of being held during the NAB Show in Las Vegas as in years past, the awards ...

Marked: "Martian / Big Four / Newark, New Jersey / Pat. Pend.". A crystal radio detector with binding posts for headphone connections on top, posts for antenna and ground connections on bottom.