User's Manual

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programmed for private operation and the correct cryptographic key must be
loaded into the radio.
Transmitting an Encrypted Call
1. Select the desired group or channel.
2. Place the radio in private mode by pressing the PVT button (System
Model) or
O (Scan Model). When private mode is enabled, the PVT
keylight (System Model) or OPTION keylight (Scan Model) will be ON.
If the last state of the radio was private mode, the private mode will be
enabled on power up. In addition, the private mode will be enabled if
forced operation has been programmed in the radio
If a group or channel is not programmed for private mode operation, PVT
DIS will be displayed if an attempt is made to enable private transmit
mode. It is not possible to operate on this group/channel in private mode.
If the radio is programmed for forced private transmit operation, FRCD
PVT will be displayed if an attempt is made to disable private transmit
mode. It is not possible to transmit on this group/channel in clear mode.
If the radio does not have the correct encryption key loaded, NO KEY #
will be displayed and the call will not be transmitted.
3. Continue with standard transmission procedures. A private mode access
tone will be heard when the PTT button is pressed.
Scanned Group Calls
Receiving a scanned group call is the same as receiving a selected group call.
During the scan hang time, if the radio was programmed for auto-select, it will
transmit back in the same mode it received the call. For example, if a clear
group is entered in the scan list, it will only receive clear calls. If the same
group was available in private and entered in the scan list, it can receive clear
and private calls, provided auto-select was programmed in the radio. The user
can select transmitting on the scanned or selected group. If a group is entered
in the scan list more than once and in different modes (clear, digital, private),
only the first occurrence of the group will be used.
Conventional Operation
Outside Address
The same outside address (works similar to Channel Guard operation) must be
programmed in the transmitting and receiving radios when Aegis or ProVoice
digital or private operation is enabled. If address is not correct, the radios will
not communicate.