Eads Two-Way Radio - Calculator; Countdown Timer

Menu functions
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Calculator
Note: This calculator has limited accuracy and is designed for
simple calculations.
1. Select Menu → Organiser → Calculator.
2. When "0" is displayed, enter the first number in the calculation.
Press for a decimal point. To change the sign, select
Options → Change sign.
3. Select
Options → Add, Subtract, Multiply, Divide, Square, or
Square root.
Or, press once to add, twice to subtract, three times to
multiply, and four times to divide.
4. Enter the second number, if needed for the calculation.
5. For a total, press
Equals . Repeat steps 3 to 5 as many times as
is necessary.
6. To start a new calculation, first press and hold
Clear .
To make a currency conversion, you must first set the exchange
rate. Select
Menu → Organiser → Calculator, and select Options →
Exchange rate. Select either of the options, enter the exchange rate
(press for the decimal point), and press
OK .
To make the conversion, enter the amount you want to convert, and
select
Options → In domestic or In foreign.
Countdown timer
Note: Some timers may be reset during service or software
upgrades.
Select Menu → Organiser → Countdown timer. Enter the countdown
time, and press
OK . If you want, write your own text note that is
displayed when the time expires. To start the countdown timer,
press
Start .
To change the countdown time, select
Change time. To stop the
timer, select
Stop timer.