OCF antennas are very convenient as they will allow multiple bands of operation with a simple wire antenna which is fed off center with a 4:1 OCF Current balun with built in feed line choke,
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