User's Manual

69
Cryptographic keys are transferred to the radio using a cryptographic
Keyloader. Up to seven (7) different cryptographic keys, numbered 1-7, can
be transferred from a Keyloader and stored in the radio. An individual key is
automatically selected on a per-group/channel basis according to the radio's
programming. Groups and channels within Aegis or ProVoice systems can be
programmed for keys 1-7. Up to 8 banks of 7 keys can be stored for Aegis
(DES and VGE) systems.
DES radios require a DES Keyloader (Option V4025 with software version
3.n or later). VGE radios require a VGE Keyloader (Option V4028 with
software version 2.n or later).
When operating on a group or channel programmed for private mode, all
transmissions will be private transmissions and the radio will receive clear and
private signals. The PVT keylight (System Model) or OPTION keylight (Scan
Model) turns ON when the private mode is enabled. If the selected group or
channel is programmed for auto-select capability, the mode can be toggled
between private and clear with the PVT button (System Model) or
O button
(Scan Model). Radios programmed for forced private operation do not allow a
change of the transmit mode; therefore, the PVT button (System Model) or
O
button (Scan Model) has no effect.
Transferring Keys to the Radio
The following procedure outlines basic key transferring steps:
1. Turn the radio OFF.
2. Ensure that the PC programming cables and adapter box are disconnected
from radio unit.
3. Plug the modular connector of the Keyloader cable into the Keyloader
modular jack.
4. Connect the Keyloader cable to the keyloader level converter and then to
the extended options cable DB25 on the rear of the radio.
5. Press the PWR button on the Keyloader and wait for the Keyloader to
display "MASTER MODE."
6. Press the TRN button on the Keyloader. If necessary, select a different
cryptographic key to be transferred into the radio.
7. Turn the radio ON. Use the
m button to access the menu options then the
RAMP
, or . controls to select KEYLOAD.
8. Press
m (SELECT). Then use the RAMP , or . controls to select
the bank location.
9. Press the EXE button on the Keyloader to transfer the key. The Keyloader
will display "GOOD 1.x TRANSFER" where "x" is the selected
cryptographic key number.