Ericsson LBI-39012B - Manual (Page 25)

2. Use the M button to select DISP KEY.
3. Then use the CHANNEL/SEL button to toggle between displaying
the system key or the channel key.
ENCRYPTION KEY DISPLAYED MESSAGE DISPLAYED
System "SYS KEY"
"KEY = 1"
Channel "CHN KEY"
"KEY = 2"
KEY ZERO
All cryptographic keys can be zeroed (erased from radio memory) by
pressing the C button and while still pressing this button, press and hold the
OPT button. Press both buttons for 2 seconds. A series of warning beeps will
begin at the start of this 2 second period and then switch to a solid tone after
keys have been zeroed. The display will indicate KEY ZERO.
If the cryptographic key(s) are zeroed, one or more keys must be transferred
from the Keyloader into the radio before VGE digital communications may
continue.
VGE DIGITAL OPERATION
RECEIVING AN ENCRYPTED CALL
When receiving, the radio automatically switches between clear or digital
operation. If the transmission being received is an encrypted transmission, it
will be decrypted, the PVT light will flash, the receiver will unsquelch and the
message will be heard in the speaker. For this to occur, the selected channel
must be programmed for digital operation and the correct cryptographic key
must be loaded into the radio.
TRANSMITTING AN ENCRYPTED CALL
1. Select the desired channel.
2. Place the radio in digital mode by pressing the PVT button (flex key
a , A ). When digital mode is enabled, the PVT light will be on.
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