http://kearman.com/bentongue/xtalset/1nlxtlsd/1nlxtlsd.html WebFeb 12, 2006 · All round, the field effect transistor based infinite impedance detector is pretty amazing, offering high audio output, low distortion, excellent sensitivity and is quite free of the weak signal diode detector distortion tendency. It offers impressive performance for such a simple circuit.

Building Equipment - arrl.org

WebApr 30, 2024 · Crystal radios have been around since the early 1900’s. A crystal radio or crystal set is a simple AM radio receiver based upon a detector that was originally made from a piece of crystalline mineral such as galena. This component is now called a diode. A crystal radio needs no external power as it runs on the power of the received radio ... WebA landmark paper recently appeared: Bob Culter, N7FKI, “High Sensitivity Crystal Set,” QST, pp31-33, January, 2007. This paper can be downloaded from the ARRL web site. Bob’s design replaces the traditional semiconductor diode detector of a classic crystal radio with a zero-voltage-threshold MOSFET. greenrey ltd aylesbury

Chapter 13 BUILDING A HOMEBREW HF RECEIVER

WebJun 9, 2014 · Here are some pictures of the completed radio: Unfortunately, the Altoids tin reduced performance of the circuit. The additional grounding of the metal case creating parasitic capacitance appears to be the culprit. It still works, but I was able to pull in more signals on the breadboard. Webthreshold-voltage MOSFET IC made by Advanced Linear Devices.3 Figure 2 shows High Sensitivity Crystal Set Build a “crystal radio” that does not require an outside antenna or … http://kearman.com/bentongue/xtalset/1nlxtlsd/1nlxtlsd.html green revolution started in world