The Cushcraft R5 is a 17ft half wave vertical is covering the 10, 12, 15, 17, and 20m amateur bands. The antenna does not require traditional ground radials, so no need for radials and is so light mounting solutions are simple. It uses ½ wave radiators with 4 or shorter base-load rods. Those “radials” are in fact a top hat capacitance.
The manual states that this shortened half wave radiator is suited for 1.8 kW pep power and that is remarkable for this type of 5 m-tall antenna.