In this paper, we demonstrate a prototype system for local oscillator (LO) synchronization of distributed beamforming in wireless ad hoc networks. The system is composed of a low power full duplex (FD) transceiver IC, a RF phase interpolator IC, and a CDMA encoder/decoder to enable realization of a conjugate loop and synchronize the LO\'s of two RF nodes. Both ICs fabricated in 180nm CMOS technology. The FD transceiver IC consumes 69mW at 700MHz and the RF phase interpolator IC consumes 75mW at 1.4GHz. Using the low power ICs, we demonstrate a simple, lightweight, and robust methodology to synchronize two LO\'s with an average phase precision of 2.1° using RF only transmissions via a single antenna per node.