Balun Hybrids include an impedance balun (2:1, 4:1, 6:1, 9:1, 16:1, etc) and a 1:1 balun (choke) in a single enclosure. Use on OCF, loop, terminated dipoles and similar coax fed antennas requiring an impedance transformer Suppresses common mode current on the coax outer braid (prevents your dipole from acting as a tripole!).
FT140-77, ID=.9", RFI Range .1-10 MHz
Product Details
MPN: F140-77
RFI Range (MHz): 100 KHz-10 Mhz
ID-B (in/mm): .9/23
OD-A (in/mm): 1.4/35.6
Height-C (in/mm): .5/12.7
Weight (oz/gm): 33 grams
Initial permeability: 2000
A(L): 2250
Ferrite Ring Toroid Core, ID = .9"/23mm, Mix 77. Excellent for low frequency switching power supplies. RFI range .1-50 MHz.