Secure Operations; Selecting Secure Transmissions; Selecting Clear Transmissions; Managing Encryption - Motorola ASTRO APX 7000 Series Quick Reference Card

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.
Note: Secure operation is not available in trunked analog
modes.

Selecting Secure Transmissions

Procedure:
Turn the preprogrammed Secure/Clear switch to the secure
position.
Note: If the selected channel is programmed for clear-only
operation – when you press the PTT button, an invalid
mode tone sounds and the display shows Clr TX only.
The radio will not transmit until you set the Secure/
Clear switch to the clear position.

Selecting Clear Transmissions

Procedure:
Turn the preprogrammed Secure/Clear switch to the clear
position.
Note: If the selected channel is programmed for secure-only
operation – when you press the PTT button, an invalid
mode tone sounds and the display shows Sec TX
only.
The radio will not transmit until you set the Secure/
Clear switch to the secure position.

Managing Encryption

Loading an Encryption Key

Note: Refer to the key-variable loader (KVL) manual for
equipment connections and setup.
Procedure:
1
Attach the KVL to your radio.
The display shows Keyloading, and all other radio
2
functions, except for power down, backlight, and volume,
are locked out.
3
Press the PTT button on the KVL. This loads the encryption
keys into your radio.
4
When the key has been loaded successfully, the radio
sounds a short tone for single-key radios.
OR
When the key has been loaded successfully, the radio
sounds an alternating tone for multikey radios.
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