Motorola ASTRO XTL 5000 Basic Service Manual page 91

Encryption: Load an Encryption Key
7.2 Load an Encryption Key
To load an encryption key into an XTL 5000 radio:
1. Ensure that an encryption module is installed in the radio.
2. Ensure the secure shield is installed and screwed into chassis prior to radio power-up. This is
necessary for proper radio operation.
3. Load an encryption key into the radio's memory from a key-variable loader (KVL) using the
correct loader for the radio's encryption type.
Attach the keyloader cable to the control head GCAI connector in the dash mount
configuration and to the TIB GCAI connector in the remote mount configuration.
4. KEYLOADING is displayed on the radio display while the key transfer is in progress.
For single-key radios, a short tone sounds when a key is successfully loaded.
For multi-key radios, an alternating tone sounds for a few seconds after keys are successfully
loaded.
NOTE: An invalid encryption key aborts a secure transmission. KEYFAIL is displayed and a keyfail
tone (consecutive medium-pitched beeps) sounds until you release the PTT button.
5. If a mode is not programmed for either secure or clear-only operation, use the secure
programmable button to select secure or clear transmission.
NOTE: You cannot change from secure to clear, or from clear to secure, while pressing the PTT
button.
7.3 Advanced Secure Operation
NOTE: The Advanced Secure feature is available only on radios that have been equipped by the
factory to support it. The radio must also be equipped with an encryption module.
Advanced Secure incorporates the Multikey feature and a dual-encryption feature into the existing
secure system. Multikey allows a radio to be equipped with multiple encryption keys. A default key is
included and is associated with the current mode. The keys are strapped to a given mode or are
operator-selectable and can be indexed into groups of keys called keysets. The keys are loaded
using a manual keyloader.
In addition, your radio can support up to eight different encryption algorithms simultaneously.
7.3.1 Multikey Operation
The multikey feature can be used in both conventional and trunked applications.
• Conventional Multikey - The encryption keys can be selectively strapped, one per each
channel. In addition, the programmable radio features include operator-selectable keys,
operator-selectable indices, and operator-selectable key erasure. Encryption keys are loaded
into the radio through a KVL.
• Trunked Multikey - If the radio is used for both conventional and trunked applications, the
encryption keys have to be strapped for trunking on a talkgroup, or announcement group, basis.
In addition, a different encryption key can be strapped to other features, such as Private Call,
Dynamic Regrouping, Failsoft, Interconnect, System Wide, or Emergency Talkgroup.
6871769L01-A
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October 30, 2006