2:1 (100:50) Baluns are useful between 50 ohm coax and 100 ohm balanced lines for loops, cubical quads, log periodics and other antennas where the impedance at the end of the feedline is 100 ohms (1/2 wavelength feedline).
RFI/EMI Solutions from KHz to GHz
Ferrite Slip On Bead, ID = .770in/19.55mm, Mix 31
Fits LMR600 cable (.59" OD), use 10 for HF choke at high power. Use 2" shrink to cover.
We also sell these beads with shrink wrap for use as coax feed line chokes for LMR600, etc. Part# isSLO31-3/4-5, 10, 15