The QRPBuilder baluns are used in matching a balanced antenna, eg. 1/2 wave dipole to your coaxial feed line which is unbalanced. This eliminates feedline radiation that can cause problems such as inducing radiation in nearby objects, like house wiring resulting in feedline power loss and TVI. We offer either 1:1 or 4:1 compact baluns for your needs that are rated to 20 watts for portable operations. See the tips below to choose which fits your situation. They both have pushbutton connections for the antenna wires and a female BNC connecting to your feedline. A 1/4″ dia. hole is provided for a line to hoist the assembly. They are easy to build. On a difficulty scale of 1 to 5, 5 being the most difficult, this is rated at 2, and can be built in less than an hour.
Tips for choosing a 1:1 balun or a 4:1 balun
Click here for the 1:1 balun assembly manual
Click here for the 4:1 balun assembly manual