The NCS-C151 is a two radio repeater with the same features as the NCS-C150 except this unit has an on board Audio & PTT Delay circuit to provide delay to one trunked radio. If two trunked radios are used, Audio & PTT Delay is provided by a separate NCS-C410 or NCS-C411 module. The Delay circuit provides a user selectable audio delay to accommodate inherent delays seen in trunked systems between receipt of PTT and assignment of channel. Delays of 0, 50, 100, 200, 400, 800, 1600 & 3200msec are selectable. The NCS-C151 has a small form factor of 2.1″ x 4.1″ x 4.7″ (HxWxD) and operates from 9-14VDC for use in any vehicle or fixed location. The unit is provided with mounting brackets that enable securing the unit on top of or under a mounting surface. The form factor also accommodates easy mounting to a 19″ 2U rack panel.