Tait TM9456, User Manual

Page: 103 / 129

Encryption 103
The name of the encryption key used to encrypt the
incoming call may briefly appear in the display, below
the name of the caller.
If the key required to decode the call is not stored in
your radio, then your radio remains muted.
Your radio may also remain muted if the currently
selected channel has ‘proper key detect’
programmed.
About the proper key detect feature
Your radio may be programmed with ‘proper key
detect’. This means that you can only hear an
encrypted call if the key used to encrypt the incoming
call matches the key used to encrypt your outgoing
calls on that channel.
Note that encryption does not need to be turned ‘on’
for the radio to unmute.
For example, you are encrypting your outgoing calls
using encryption
key 7 . Although key 1 and key 2 are
also stored in your radio, your radio has been
programmed so that it will only unmute for incoming
calls encrypted using
key 7 .
Changing the radio’s encryption
key
You may be able to use the Change All menu to
change the encryption key that encrypts your outgoing
calls. You can then use the
Preset Keys menu to
change the encryption keys back to the default
encryption key for each channel.
Channel 7
Key 2
Menu