Receive a $100 Mail-In Rebate SAVE $100 on the M506! Purchase a qualifying M506 and receive a mail-in rebate. Models: 15155518, 15155526, 15155534, 15155542, 15337439 Valid March 1, 2018 — April 30, 2018 View Details This M506 version is a full featured fixed mount VHF radio with only NMEA 0183 connectivity, but not NMEA 2000.The M506 is packed full of features including ‘Last Call voice recording function and compatibility with the optional CommandMic IV 25W hailer with a listen function. "Active Noise Canceling" technology reduces background noise. Icoms intuitive menu-driven user interface and a large dot matrix display make operating the radio easy.Almost identical in size to the M504A, but with a larger dot-matrix display, a sleekly designed speaker microphone, a louder 10-watt audio output from the front-facing speaker, and the same easy-to-operate user interface as ICOM's M424, M92D, M400BB and CommandMic IV.Key FeaturesLast Call Voice Recording: The last call voice recording function automatically saves the last two minutes of the last incoming call. You can replay the received call and not miss any incoming call.Active Noise Canceling: Using digital signal processing technology, the built-in sing digital signal processing technology, the built-in bidirectional active noise canceling provides superb idirectional active noise cancelling provides superb performance. It reduces background noise to up to 90% erformance. It reduces background noise to up to 90% in the received signal and 30% fixed in the transmitting n the received signal and 30% fixed in the transmitting signal. The function OFF setting is also possible.Intuitive Menu-Driven