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 Snap On, ID = .74 in/18.8 mm, Mix 31, Case of 110 pieces
Excellent for audio, video, Ethernet, coaxial cable, AC/DC power and multi-core cable