Abstract: This study describes electromagnetic heating of oil using curve transmitter with magnetic feeders in the radio frequency region. The transmitter was developed to focus the electromagnetic waves to the target. A series of experiments were done to find focus point of electromagnetic waves by using curve transmitter with magnetic feeders in water tank filled with brine at 15% salinity. The center of the transmitter has 184.4% higher magnetic field strength as compared to both end of the transmitter. Three magnetic feeders had resulted approximately 210% increased of magnetic field. The porosity and permeability of the core samples were also measured. Oil saturated core rock samples were kept in tank filled with brine of 15% salinity for efficient oil recovery. The EM waves emitted by the curve transmitter with 3 magnetic feeders were able to recover 43.71 (sample 1) and 59.26% of OIP (sample 2).