Sverre’s cheap VHF receiver:
What is the cheapest receiver you can make for VHF? Here is a candidate where all you need to do to modify a small FM headphone receiver is to desolder one end of two capacitors, and connect a short cable with an antenna connector.
See the full post on LA3ZA Radio & Electronics blog.
from Dangerous Prototypes https://ift.tt/3hAiPpH