Automotive Security And Alarms > Raymarine Raymarine dsm300 digital sounder module New. Radar by RAYMARINE. This RAYMARINE DSM300 SOUNDER is only $639.0000 @ Electrified.com. Raymarine 4kw 639 array fc series 72NM maximum range. Larger array offers precision target detection. Low noise receiver with 8 Pulse width/PRF settings delivers outstanding performance on every range.