G’Day, Desiring to feed a 2 element cubed Quad antenna with 450 open wire ladder line ( .88 Velocity Factor, and My intention is to use multiples of Half wavelengths) connected to good old bt1500 balanced tuner, then coaxial cable to transmitter. However at the Antenna feed point IS WHERE I AM UNCERTAIN exactly what to do. Should I simply connect the 450 Ohm line directly to the Quad driven element, OR would it be better to have a 4:1 Balun/ balbal there. Most Quad. Antennas show approx. 105 Ohms or so at the desired feed point. Indeed, if I decide to use no feedpoint transforming device, probably 300 ohm ladder line would be better. Alright, if anyone can clear the waters on this, please go a ahead, Thanks de Charles.