Ferrite Tutorials

Ferrite Mix Selection

Ferrite Cross Reference

Ferrite Toroid Tech Specs

Ferrite Chatter Noise

RF Toroid Calculator by VK3CPU

Ham Radio Outlet Products

HRO stocks many Palomar Engineers products including RFI solutions and antenna products.

Need a quick overview to solve your RFI problem? Click on the RFI Cheat Sheet or RFI Solutions Tip Sheet

Palomar Engineers Antenna Info Sheet