Wulfsberg FLEXCOMM II C-5000 User Manual

C-5000 Pilot’s Guide
Publication No. 150-041103 Page 26 of 51
Rev. C C-5000 Pilot’s Guide
Nov 2013
Encryption Features
Turning Encryption On and Off
Put the cursor on the top or bottom line depending on which radio is to be selected. Press the PVT
button to toggle encryption on and off. If the C-5000 has been configured to control an RT-5000 with an
encryption module and the preset channel being used has been set up for encryption, the privacy
indicator will light.
Encryption can only be turned on for channels that have been pre-programmed with an
encryption key. Three error beeps will sound if the channel has not been setup for
encryption.
Changing the channel will automatically reset the encryption setting to OFF. The
encryption device in the RT-5000 will still decode encrypted messages i.e. the
encryption ON/OFF affects only the transmit and not the receive function of the
encryption unit.
Selecting an Encryption Key
The preset encryption key (sometimes called KEYMAT) for a channel can be temporarily changed as
follows.
 Ensure you are on the HOME PAGE, the cursor is on the line of the radio you wish to select, and
an encryption capable channel is selected.
 Press the KEY button. The following illustrates the display when the KEY button was pressed
with the cursor on the top line, i.e. on radio 1. If the KEY button is pressed on a channel that has
not been preset to use encryption, three warning beeps will sound.
T X K E Y =
P
S
E
T
<
E
N
T
E
R
>
2

. . 1
T
A
C
T
I
C
A
L
-
0 0 1
 Rotate the VALUE knob to change the encryption key. A value of “PSET” indicates you want to
use the channel’s preset encryption key. A numeric value (1-16) indicates you want to override
the preset key with the specified key.
 Press the ENTER button to accept the displayed key. The display will return to the HOME PAGE.
 When transmitting, if encryption keys are properly loaded, a tone at the start of the transmission
will be generated by the radio and heard by the operator. Begin speaking AFTER the tone or part
of your transmission will be lost.
 When transmitting in the encrypted mode, if you hear a continuous warble tone, this indicates that
the encryption key(s) have not been loaded. Either manually enter encryption keys or perform an
OTAR if your system has that capability.
 The selected KEYMAT will remain in effect until it is changed or the system is powered down.
NOTE:

Wulfsberg FLEXCOMM II C-5000 Specifications

General

Brand	Wulfsberg
Model	FLEXCOMM II C-5000
Category	Avionics Display
Language	English