NorthStar EXPLORER 721EU Operation And Installation Manual page 12

Rotary knob Channel Select . Turn to select a channel. The current channel is shown on the LCD in BIG
digits with an A or B designator suffix (if applicable) in small letters below the channel
number. (See Appendix C for a listing of channel frequencies.)
Push to activate the ENT (Enter) function.
You can also use the rotary knob for alphanumeric entry if you don't have an alphanu-
meric microphone. Turn to step through alphanumeric characters one at a time then
push to confirm each selection. If you make an error, select the < character then push
to backup.
info Information . Press on the base MIKE to toggle through the INFO display to show the
barometric historgram, the barometric readout and temperature, or the Signal-to-Noise
Ratio (SNR).
H/L Transmission Power . High (HI) 25 W or Low (LO) 1 W. Press to toggle between high or
low transmission power for the entire channel bank. The HI or LO selection is shown on
the LCD.
Some channels allow only low power transmissions. Error beeps will sound if the power
transmission setting is incorrect.
Some channels allow only low power transmissions initially, but can be changed to high
power by holding down H/L and PTT at the same time. See Appendix C for a complete
listing of channel charts.
+ CH -
Channel Select . Press CH + or CH - to step through the available channels one at a time,
or hold down to scroll rapidly through all the available channels. The current channel is
shown on the LCD in BIG digits (with an A or B designator suffix if applicable in small letters
below the channel number). (See Appendix C & D for a listing of channel frequencies.)
Press CH + or CH - to scroll the cursor up and down menu options on the LCD when
navigating menus.
When editing an item containing only numbers, press CH - to step through the numbers
or hold down to scroll rapidly.
To enter a character, press Ch + to step through the alphabet or hold down to scroll
rapidly.
ENT Enter . Press ENT when navigating menus, to confirm entries and edits.
PTT Press To Talk . Press PTT to transmit at any time on an allowable channel. This automati-
cally 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. This timer is required by FCC regulations.
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Northstar Explorer VHF Series: 721/725 Operation and Installation Manual