English
page 16
MCS 2000 Model I
68P81083C05-C
and the current mode and the out of range tone will
sound.
Secure Operation
Note:This section applies only if secure opera-
tion is programmed into your radio. This sec-
tion lists features where differences occur when
operating in secure. For other feature operation
see General Operation above.
Outgoing Calls:When the selected mode is not pre-
programmed as either secure-only or clear-only,
secure transmit is turned on/off by pressing the
secure button (4), except for trunking telephone inter-
connect and private call which are always controlled
by the button. A beep immediately after the PTT is
pressed indicates a clear (non-secure) transmission.
Note: If the secure button is pressed during a
transmission, the transmission is aborted, and
an alert tone will sound until the PTT is
released. The operation change will be effective
with the next PTT press.
Incoming Calls: When a secure call is received the
orange LED (conventional only) and the secure icon
will flash.
Conventional Functions: In monitor, only calls from
radios with the same encryption key will be heard.
Calls with a different key will be heard as noise.
Trunking Functions: When secure transmit is control-
led by the secure button (4), during a talk group or
private call you can only change from clear to secure
operation. During a telephone interconnect or fail-
soft call you can change from clear to secure opera-
tion, or from secure to clear. During an emergency
call NO change is possible.
Secure Keyload and Erase
An encryption key must be loaded from a Key Varia-
ble Loader (KVL) that corresponds to the encryption
type of the radio.
Disconnect the microphone cable from the control-
head and attach the keyloader cable. The display
shows "KEYLDNG" (KEYLOADING), and normal
transmit and receive is disabled. Refer to the KVL
instruction manual for loading procedure.
MCS2000 1-B UG GBBook Page 16 tirsdag 3. november 1998 12:59
