Ferrite rods and bobbins make excellent cores for a variety of different applications. These can range from wireless antenna cores (wireless power, Bluetooth, RFID, etc..) to high bias/power inductors, to chokes and many more. In this video we take a brief look at characteristics of the different core types and how they compare to one another.
Rods: https://www.fair-rite.com/product-cat...
Antenna/RFID Rods: https://www.fair-rite.com/product-cat...