Navman 7000, 7100EU, 7100US operation manual + Ch

+ CH -	Channel Select. Also on the microphone. The current channel is shown on
	the screen in BIG digits with an appropriate designator suffix A or B in small
	letters below the channel number.
	Press + or - to step through the available channels one at a time, or hold
	down to scroll rapidly through all the available channels. See Appendix C for
	a listing of channel charts.
	Alphanumeric Entry. This key can also be used for menu selection and for
	alphanumeric entry. Press + or - to scroll the cursor up or down menu options
	when navigating menus.
	When editing an item containing only numbers, press - to count through the
	numbers or hold down to scroll rapidly.
	To enter a character, press + to step through the alphabet or hold down to
	scroll rapidly.
ENT	Enter. Use ENT when navigating menus, to confirm entries and edits.
ESC	Escape. Use ESC when navigating menus, to clear incorrect entries, to
	exit from a menu without saving changes, and to back up to the previous
	screen.
CALL/MENU	DSC Setup Menu and DSC Call Menu. 7100US and 7100EU only. Press to
	enter the DSC Call Menu and make DSC calls. See Section 5.
	Hold down to enter the DSC Setup Menu and customize your radio. See
	Section 4.
MENU	Radio menu. 7000 only. Press to enter the Radio Menu and customize your
	NAVMAN VHF radio. See Section 3.
DISTRESS	Send DSC Distress Call. 7100US & 7100EU only. See Section 6.
PTT	Press To Talk. Press PTT to transmit at any time on an allowable channel.
	This automatically exits you from menu mode and stops scanning. You must
	release PTT to receive a signal.
	If PTT sticks, a built-in timer will automatically shut down a transmission after
	five minutes and sound the error beeps.

10 NAVMAN VHF 7000, 7100US, 7100EU Operation Manual