We present progress on development and testing of a two-coil array with each coil separately and dynamically tunable between dual frequencies. This test setup works toward the goal of developing a larger nine-element coil array for a new style of open MRI system utilizing the Bloch-Siegert shift at low Bo field. The array design is such that pairs of coils are selected for transmission at ~850kHz while allowing simultaneous receive at ~1MHz on the non transmitting coils. We discuss the construction and present measurements of RF scattering parameters of a two-coil test setup.
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