Take your radio science learning to the next level with the Advanced Crystal Radio Kit by MINISCIENCE.COM. This educational kit builds on the fundamentals by including additional components such as a germanium diode, ceramic capacitor, resistor, and crystal earphone, along with an adjustable tuning wire system to explore AM frequency reception and signal clarity. A basic construction guide is included to help you get started, but it's just the beginning—we encourage you to research, modify, and experiment to unlock the full learning potential of this project. No soldering, no batteries—just real hands-on science. Designed for students, educators, and curious hobbyists. This is not a toy. For users age 12 and above.