Building your own antennas is fun and relatively inexpensive. Jim, N4BFR, takes us through the basics of finding the length, connecting to the balun, strain relief, insulation and adjusting the length.
Before you build an antenna, you are going to need a device to match your radials to your feedline. That’s where a Balun comes in. Jim (N4BFR) takes you through the basics of baluns.
DX Engineering has an excellent article on choosing the correct balun for your antenna build.