Tait TM9100 User Manual - page 3
TM9100 and TP9100 User’s Guides
3
© Tait Electronics Limited December 2005
‘Proper Key Detect’ feature
Your radio may be programmed so that you
can only hear the encrypted call if the key
used to encrypt the call matches the
encryption key that currently encrypts
your transmissions.
In this case, your radio remains muted even
if the received call is encrypted with a key
that matches another key stored in
your radio.
For example, you are encrypting your
transmissions using encryption
key 7
.
Although
key 1
and
key 2
are also stored in
your radio, your radio has been
programmed so that only calls encrypted
using
key 7
unmute the radio.
Changing your radio’s encryption key
You may be able to use the Change All
menu to change the encryption key that
encrypts your transmissions.
Note:
Once you change the encryption key,
it may also automatically update the
encryption keys used to encrypt calls on
other channels.
You can use the Preset Keys menu to change
the encryption keys back to the default
encryption key for each channel.
Using the Change All menu
To change the encryption key using the
Change All menu:
1. Press
Menu
and select
Security
>
Change All
. A list of all the encryption
keys stored in your radio appears.
2. Scroll to the key you want and
press
Select
.
The message
Global Key Selected
appears
in the display.
Using the Preset Keys menu
To change to the default encryption key for
each channel:
1. Press
Menu
and select
Security
>
Preset Keys
.
The message
Select Preset Keys?
appears in
the display:
2. Press
OK
and the message
Preset Key
Selected
appears in the display.
Removing encryption keys from
your radio
It may be possible for you to delete
encryption keys from your radio.
Note:
When emergency mode is activated or
when your radio is immobilized (‘inhibited’),
your encryption keys may be automatically
deleted from your radio.
To delete an encryption key:
1. Press
Menu
and select
Security
>
Advanced
>
Zeroize Key
.
2. Scroll to the key you want and
press
Select
.
The message
Single Key Zeroized
appears
in the display.
To delete all encryption keys:
1. Press
Menu
and select
Security
>
Advanced
>
Zeroize All
.
The message
Zeroize All Keys?
appears in
the display:
2. Press OK and the message
All Keys
Zeroized
appears in the display.