RBA-4:1
The RBA-4:1 Voltage Balun was designed to allow easy interface of ladder line antennas and long wires to the LDG line of Automatic Antenna Tuners. The Balun operates "stand alone", thus does not require an LDG Tuner. It may be used with any of your long, random, or ladder line antenna projects.
Posted by Rob on 17th Nov 2016
It's a balun and it works. I've been using it on some W3EDP trail antennas, and it all of the hardware seems solid enough. Not water-tight, but the instructions have suggestions for waterproofing if you need to.
Simple, straightforward, works. All you can ask for in a balun.