Ads
related to: crystal radio kit hobby lobby
Search results
Results From The WOW.Com Content Network
A crystal radio receiver, also ... and radio experimentation was a hobby for many ... A large number of prefabricated novelty items and simple kits could be found ...
As a result of the case, Hobby Lobby agreed to return the artifacts and forfeit $3 million. U.S. Immigration and Customs Enforcement returned 3,800 items seized from Hobby Lobby to Iraq in May 2018. [2] In March 2020, Hobby Lobby president Steve Green agreed to return 11,500 items to Egypt and Iraq. [3] [4]
English: A crystal radio receiver circuit with detector bias battery and testing buzzer. This type receiver circuit was used with cat's whisker detectors during the wireless telegraphy era prior to the 1920s. Many of the crystals used in early cat's whisker detectors, particularly carborundum (silicon carbide), had large band gaps (forward ...
A foxhole radio is a simple crystal sets radio receiver cobbled together from whatever parts one could make (which were very few indeed) or scrounged from junked equipment. Such a set typically used salvaged domestic wiring for an antenna, a double-edged safety-razor blade and pencil lead (or bent safety-pin) for a detector, and a tin can ...
Crystal radio receivers are a very simple kind of batteryless radio receiver. They do not need a battery or power source, except for the power that they receive from radio waves using their long outdoor wire antenna. Sharp Electronics' first electrical product was a batteryless crystal radio introduced in 1925.
A buzzer circuit, powered by a BA-4 battery, was mounted in the box cover and used to adjust the crystal. The set was compact and mounted in a wooden box, type BC-14. The lid of the box held the buzzer circuit, detectors, a screwdriver, two P-11 telephone headsets, spare parts, extra crystals, and an operating manual, “Radio Pamphlet No. 3 ...