Motorola MCS 2000 사용자 설명서 - 페이지 16

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MCS 2000 Model I

Secure Operation

Note: This section applies only if secure oper-

ation 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 con-

trolled 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 Vari-

able 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.

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