APX
TM
 7500 O5 
60 
Index 
Secure Operations 
 Secure Operations 
Secure radio operation provides the highest 
commercially available level of voice security on both 
trunked and conventional channels.Unlike other forms of 
security, Motorola digital encryption provides signaling 
that makes it virtually impossible for others to decode 
any part of an encrypted message. 
 
Berks County’s talkgroup are strapped to clear, or 
Encrypted.  The Secure/Clear switch is not 
programmed. In the case of Encrypted, the talkgroups 
can be either strapped to an AES or ADP key.  If needed 
a list of these Talkgroups can be found in the master 
fleetmap document provided earlier. 
 
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