Icom IP740D Instruction Manual - Page 31

5 OTHER FUNCTIONS Using assignable keys Functions shown below may be assigned to the [Sub PTT], [Side 1], and [Side 2] keys, depending on a presetting. Hold down or push these keys to use assigned functions. You can also assign these functions in the Detailed Set mode (p. 6-5). Function Descriptions Zone Enter the Zone* Selection screen. *Certain channels are grouped together and assigned to a Zone according to their intended use. For example, Analog channels 'Station 1' and 'Station 2' are assigned to an "Analog" Zone, and Digital channels 'Station 3' and 'Station 4' are assigned to a "Digital" Zone. Monitor Turn ON the monitor function. The function turn the squelch mute or the CTCSS (DTCS) squelch mute ON or OFF. Talk Around Turn ON the Talk Around function. The function equalizes the transmit frequency to the receive frequency, for direct (Simplex) communication. Message Push to directly display the Message screen. LLThe Message screen displayed by the first push differs depending on a presetting. One Touch Push to directly select particular callto party. LLThe selectable call-to party differs depending on a presetting. Surveillance Turn ON the Surveillance function. When this function is turned ON, the beep is not heard and the backlight and the Status indicator do not light, even when a signal is received, or a key is pushed. AquaQuake™ While holding down this key, the AquaQuake water draining function removes water from the speaker grill by vibrating the internal speaker. LLWater in the speaker grill may muffle the sound coming from the speaker. LLAfter the specified period of time, this function automatically stops, even if a user continues to hold down this key. LLThis key works with only the internal speaker. [Sub PTT] [Side 1] [Side 2] 5-10