$10 and Under Items Ham Radio Outlet Products Store / 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 RFI Kits RFI Kits NOISE FILTERS NOISE FILTERS ANTENNAS ANTENNAS FERRITES FERRITES