Standard Horizon Gx5500s NAV, NAV, SCRM, SCRM, GX3500S, CVS2500, GX5500S, 10.12 DUAL WATCH, TO PRIORITY CHANNEL, 10.18 VOICE SCRAMBLER, 10.14 PA/FOG OPERATION

[4(DW)] Key

When in radio mode, this key is used to directly select channel digit “4” in a channel number.

Secondary use

Press the [F] key first then press the [4(DW)] key, scan for voice communications on the priority channel and another selected channel until a signal is received on either channel (Dual Watch). Refer to section “10.12 DUAL WATCH (TO PRIORITY CHANNEL)” for details.

[5(IC)] Key

When in radio mode, this key is used to directly select channel digit “5” in a channel number.

Secondary use

Press the [F] key first then press the [5(IC)] key, when the optional RAM+ Mic is connected, intercom operation will operate between radio and RAM+ Mic. Refer to section “10.17 INTERCOM OPERATION” for de- tails.

[6(NAV)] Key

When in radio mode, this key is used to directly select channel digit “6” in a channel number.

Secondary use

Press the [F] key first then press the [6(NAV)] key, the LCD displays NAV GPS Data; Time, SOG (Speed Over Ground), and COG (Course Over Ground) when a GPS is connected to the accessory cable of the GX3500S. See section “8.4 CHECKING GPS CONNECTION” for de- tails.

[7(SCRM)] Key

When in radio mode, this key is used to directly select channel digit “7” in a channel number.

Secondary use

Press the [F] key first then press the [7(SCRM)] key, when the optional CVS2500 Voice Scrambler Unit is installed, available to operate the Voice Scrambler function. Refer to section “10.18 VOICE SCRAMBLER” for details.

[8(PA)] Key

When in radio mode, this key is used to directly select channel digit “8” in a channel number.

Secondary use

Press the [F] key first then press the [8(PA)] key, available to operate the 30 Watt PA function. Refer to section “10.14 PA/FOG OPERATION” for details.

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