RF Toroid Calculator by VK3CPU
Tutorials
RFI/EMI Solutions from KHz to GHz
RF Toroid Calculator by VK3CPU
Ferrite Slip On Bead, ID = 1in/25.4mm, Mix 31
Application Note: use 5 turns of 1/4" coax for good feed line choke from 3-30 MHz, 5KW
Also useful for choking DC cables, large coax sleeve chokes