Dual gate MOSFET mixer is designed and implemented for the radio frequency of 145MHz and the intermediate frequency of 50MHz. Radio signal and local oscillator signal are fed into the gate 1 and 2 of the MOSFET, respectively. It gives good isolation of two signals and the gain for the r.f. signal. The overall gain obtained is measured to be 17 dB and the dynamic range to be more than 90 dB. The input power of the local oscillator is determined by the radio frequency input and the intermediate frequency output matching is obtained from the measurement of the network analyzer.