allows the SDR and to use the same antenna at the same time. In receive mode, the SDR is connected to the antenna, while in transmit mode, the SDR is disconnected from the antenna and grounded. If a separate receive antenna is used, the SDR is fully protected during transmission. The MX-S1 consists of two separate circuit boards: the Audio Switch - which performs the audio path switching and is also responsible for controlling the ANT switch, and the ANT switch - which is shielded and contains the antenna relay and receive input limiter. During transmission, the SDR audio signal is and the audio signal is . Double fault SDR input protection in case of antenna relay failure. High power input limiter for limiting high currents and keeping the SDR input voltage at a safe level. Protection against PTT cable disconnection, protection against power failure, overcurrent protection (with reconfigurable fuse). Recommended to be powered from the 12 V supply used by the transceiver (common ground required). Additional external relays (max. current 200 mA) can be synchronously controlled via the PTT signal, e.g. for PA control, transmitter antenna detection, receive antenna switching, station automation. This method avoids ground loops when using multiple devices. Frequency DC-60Mhz Maximum power: 100W Insertion loss 0.3DB Operating voltage: 12V (10V-15V) Operating current: Less than100MA SWR: 1.5 Interface: SL16 Please note: There may be slight color difference or discrepancy in the actual product, which does not affect the use, please don't mind, thank you! Color: As shown Material: Metal Package Contents: 1 x SDR Switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.