Command Space Satellite Moon Radio Germanium diode radio U. Comes complete with ground wire & clip and earplug. $218. It stands about 6 inches tall. Dec 9, 2025 · germanium (Ge), a chemical element between silicon and tin in Group 14 (IVa) of the periodic table, a silvery-gray metalloid, intermediate in properties between the metals and the nonmetals. . 97 shipping Jul 20, 2024 · Over the past few weeks I’ve had time to examine many dozens of diodes, mostly germanium, in my crystal radio diode collection. 9) uses just two parts, one germanium diode and a pair or single high-impedance headphone, apart from an antenna and earth, as described earlier. Jul 21, 2012 · Germanium diodes become increasingly reluctant to conduct as the applied voltage falls below 0. Germanium oxide has a high index of refraction and dispersion. NOS. GST In stock For a crystal radio, you need a good quality germanium diode, which will provide a nice strong signal. Germanium’s graphical representation features an image of a transistor, which indicates the early use of the element [1]. (audio frequency) output to approach its peak value. Sep 1, 2025 · Learn Crystal radio basics and build your own simple, low-power radio with our step-by-step guide to DIY Crystal radio construction. A Germanium Diode operates off Radio-Wave power, that it pulls it out of the air that the AM stations broadcast. The kit is available in an easy-to-assemble version, a more complicated 'craftsman' kit for experienced builders, or even fully assembled. Germanium is a semiconductor. Also available is our Antenna Kit as well as components for those who wish to build their own Crystal Radio from scratch. The most common use of germanium is as a semiconductor in electronics. Buy 20Pcs 1N34A DO-35 germanium detector diode AM/FM crystal radio TV at Walmart. It is also used in infrared spectroscopes and infrared detectors. 25 Volt. Today, however, other semiconductors have replaced it. It is a “Crystal Radio Set” and works on a Germanium diode crystal. It is considered a semiconductor, comparable to silicon. 2V, and this makes the receiver insensitive to weak signals. - Ajax Products Co. Elemental germanium is used as a semiconductor in transistors and various other electronic devices. These days the envelope detector is a point contact diode such as a 1N34 Germanium diode. Open Box · Unbranded $10. The diode resistance R D of germanium diodes is most times rather low, and only useable in crystal receivers with a low Q (low sensitivity and low selectivity). 10 V to 0. 90 Alternative diodes for crystal radio discussion Semiconducteurs, transistors Militaire Vintage point de contact In this radio, a diode serves as the detector, separating the fluctuating direct cur-rent (containing the voices and music of the broadcast) from the amplitude-modu-lated, radio-frequency, alternating-current carrier wave that was transmitted from the radio station antenna. com Germanium is mined primarily from sphalerite (the primary ore of zinc), though germanium is also recovered commercially from silver, lead, and copper ores. About this item Russian Germanium Diode Set D9E (Blue-Red Ring USSR Germanium Detector Diode 50V 20ma Leak Detectors Leak Detectors 1000 pcs) D9V (Д9В) USSR Germanium Detector Diode 30V 20ma. com. Being a metalloid, germanium has the properties of both nonmetals and metals [6]. f. 1N34 Germanium Diode for Crystal Radio. I put this one together with my six-year-old: Can you tell? Crystal radios use germanium diodes because they have a lower voltage drop than silicon, and are therefore Apr 7, 2016 · A crystal radio is basically a high Q resonator tied to an antenna and an envelope detector. Aug 29, 2017 · A lot of designs that include germanium diodes are older, or based on older designs, when germanium diodes were commonly available. It is a hard, grayish-white element; it has a metallic luster and the same crystal structure as diamond; and it is brittle, like glass. The construction of crystal radio is remarkably simple with just four components required to make it. The ear-phone acts as a low pass filter as it is designed for the human ear (20Hz-20KHz). Mendeleev predicted a new element would be found to fill an empty spot on the table. Crystal Radio Diode A germanium diode is used to demodulate an amplitude modulated (AM) signal. The germanium diode is connected across the headphone terminals. The best diodes that provide the strongest and clearest signal were vintage ones that had been recycled out of old radios. org/?channels=tymkrshttp: Selective Germanium Diode Radio Kit VC1000 Crystal Philmore Mfg. This small (2 ½ by 2 by 1 inch) radio needs no batteries. Command Space Satellite Moon Radio Germanium diode radio Moon Radio instruction sheet (A hard choice on where to clip the alligator clamp: the chandelier or a metal lamp shade?) Moon Radio box top face Moon Radio box side face The diode resistance R D of germanium diodes is most times rather low, and only useable in crystal receivers with a low Q (low sensitivity and low selectivity).

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