[. . . ] When set up with the IC-M502 VHF radio, Icom offers you a complete communications station. Large LCD with dot matrix characters You can easily read the alphanumeric name of any of the 1355 ITU channels at a glance with the large LCD display. [. . . ] Nighttime operation is no problem with 10 levels (plus OFF) adjustable backlit display and keypad. Easy to use in all conditions The IC-H6 offers two large dials ­ bank and channel ­ for easy channel selection. Up to 16 banks of 20 (max. ) each for user channels, and 17 banks for ITU channels are available. Built-in digital selective calling For added safety at sea, the IC-H6 offers the latest in one-touch DSC emergency communications technology. (ITU Class E standard. ) The emergency button is covered by a red, spring loaded hatch to avoid accidental DSC activation. Digital signal processor advantage The speech compressor, utilizing DSP, increases average talk power. At sea e-mail has never been easier. * Please consult with an HF e-mail provider for details. Automatic antenna tuner, AT-140 An optional automatic antenna tuner, AT-140, easily connects to the IC-H6. When the tuner cannot tune the antenna, the IC-H6 bypasses the tuner and displays a warning indicator on the LCD. Other features · Wide band receive coverage (0. 5 ­ 29. 9999MHz) · VFO mode is available (depending on version) · Remote control mic allows you to select channels directly · Accessory RS-232C port allows connection of modem, etc. · GPS input, NMEA 0183 version 2. 0 or later · A headphone jack in front of the controller [. . . ] When the tuner cannot tune the antenna, the IC-H6 bypasses the tuner and displays a warning indicator on the LCD. Other features · Wide band receive coverage (0. 5 ­ 29. 9999MHz) · VFO mode is available (depending on version) · Remote control mic allows you to select channels directly · Accessory RS-232C port allows connection of modem, etc. [. . . ]