transducer used once to fish in a tournament with a different boat with my locator. model XNT 9 20T. The Humminbird XNT 9 20 T (often referred to as the XNT 9 20 or XNT 920T) is a standard 200/83 kHz Single/DualBeam transom-mount transducer with a 7-pin connector that works with a wide range of legacy and modern Humminbird sonar systems for 2D traditional sonar (it does not support Down Imaging or Side Imaging).