The SPL-2G42G50W4+ is a 4-way RF splitter for the 2.4-2.5 GHz ISM band. The splitter is capable of more than 360° of phase shift with 1° tuning resolution. Each path also has an amplitude tuning range of 30 dB with a step size of 0.5 dB. The total phase shift of the unit is accomplished with a 160° continuously variable phase shifter coupled with a 180° phase inversion bit. This unit can be used to easily construct a 1KW RF energy system built with 4x ZHL-2425-250X+, the ISC-2425-25+ and the COM2G42G51K0+.