|Ferrite Loopstick Crystal Radio Circuit|
|Ferrite Loopstick Crystal Radio|
The loopstick is 125 turns of Litz wire close-wound on a 2" length of ferrite rod with a tap at 25 turns. The number of turns may vary depending on the diameter of the ferrite rod and its relative permeability.
The primary series-tuned circuit includes the 200μH moulded inductor and the capacitance of the 60' random wire antenna. The secondary is parallel-tuned.
Reception of the local 612 kHz, 200 kW AM broadcast station is excellent.