Tait TM8250 Operator's Manual page 36

Enabling voice inversion scrambling by using
the Main menu
1
2
3
4
5
36 Basic operation
Communicate to the recipient or recipients that you are
about to turn on secure communication (scrambling
active), and they will need to do the same.
Select Menu>Radio
settings>Functions>Scrambler.
In the Scrambler menu, choose On.
Press Select.
The message Scrambler activated
appears in the display.
While on, the voice inversion scrambler
symbol appears in the display.
Proceed with your call.
Functions
Scrambler
Lock radio 2
Back Select
Scrambler
Off 2
On
Back Select
Scrambler
activated