a radio or a watch
Technical Trivia by Dr. FB / Why we don't use a silicon diode in a crystal radio?｜Jul.2020 - Monthly FB NEWS
1N34A Germanium Diode 4pc Set ~ Crystal Radio Point Contact Semiconductor | eBay
How a Crystal Radio Works - YouTube
Crystal Radio Circuits
Crystal radio - Wikipedia
Building a crystal radio set - OpenLearn - Open University
Rocket Crystal Radio
electromagnetism - What determines radio frequency for a diode? - Physics Stack Exchange
Chapter 4: Radio -- Build a crystal radio set in 10 minutes
The Complete Guide on How to Build a Crystal Radio—Plus How They Work « Steampunk R&D :: WonderHowTo
How a Crystal Radio Set Works - YouTube
Antique-style crystal radio kit, a sample of the element Germanium in the Periodic Table
The Forgotten Crystal Radio – Revisited - Electronics For You
Build Your Own Crystal Radio | Science Project
Crystal Radio Circuits: Crystal Set Circuits » Electronics Notes
Crystal Radio Diode
Learning Electronics — 2. Fun with Crystal Radio and Extensions « RAYSHOBBY.NET
How to Make / Build a Crystal Radio
Building a crystal radio set - OpenLearn - Open University
Tymkrs Germanium Diode Crystal Radio - YouTube
Crystal Radio Circuits
Getting Serious About Crystal Radios | Hackaday
Crystal radio - Wikipedia
Solved: Crystal radio set. The phenomenon of resonance makes it po... | Chegg.com
Remembering the Crystal Radio | Nuts & Volts Magazine
Make this Crystal Radio Set Circuit using No Batteries - Homemade Circuit Projects
