This is another new offering from Balun Designs. Using a combination of our 4:1 current balun and the 3kw Isolation/choke balun, we were able to install both in a single enclosure for the ideal balun combination to build a multiband Off Center Fed dipole around.
If you look closely at the pictures, you can see the 4:1 stacked over and in series with the 1:1 balun. The black polymer spacer is used to insure proper separation of the individual baluns at all times. The balun also includes the Top Hanger Eyebolt so you have a complete package for your antenna project.
Additional Photos:
Design Features:
Special mix toroids with low permeability provides broadband coverage.
The design has excellent low frequency response which makes them very efficient (98-99%). Input impedance remains essentially flat across the full HF frequency spectrum.
2 separate bifilar windings of 14 gauge Thermaleze wire inserted in Teflon tubes for the 4:1 Current balun and heavy gauge Thermaleze windings for the 1:1 balun. This is NOT the enameled type (Formvar) used by my less expensive competitors. It is coated with a polyimide covering rated at a minimum of 2000v breakdown voltage.
Insertion loss is < 0.2db
SO-239 connectors are silver plated with teflon insulation.
All hardware is Stainless Steel. Eyebolts are 1/4"
N connectors and alternate mounting options available in the accessories section.
