Motorola III User Manual download pdf (Page 22)

MAEPF-22623-B (D)

Low-Battery Alert

The radio will emit an alert tone to indicate a low-

battery condition if the battery voltage falls below the

low-voltage level. The tone will be emitted when the PTT

is released in the transmit mode, and when the low-

battery condition is detected in the receive mode.

Coded Squelch Operation

Tone Private-Line® (PL), Digital Private-Line™

(DPL), and carrier squelch operation are all available in

the same radio, on a per-mode basis. When in carrier

squelch operation, all traffic on the mode is heard.

When in PL or DPL operation, your radio responds to

only those messages intended for you. When this

feature is mode-slaved, PL, DPL, or carrier squelch is

programmed to each mode, and you need not move any

switches for activation. Alternatively, this feature can be

programmed to the ABC switch: carrier squelch

operation in one switch position, and PL or DPL

operation in another switch position.

Whenever the radio is operating in carrier squelch,

the display will show the carrier-squelch annunciator.

SECURENET Operation

This information applies to both conventional and

trunked systems.

1. A SECURENET module must be installed in the

radio.

2. An encryption key must be loaded from a key-

variable loader (KVL), using the correct loader for

the radio’s encryption type, into the radio’s

memory. To load the key, connect the keyloader

cable to the universal connector on the side of the

radio; refer to the KVL’s instruction manual for

loading procedure. While the keyloader is

attached, the display shows “KEYLOADING.” When

the key has been loaded successfully, the radio will

sound one long beep.

Notes:

• Normal radio transmit and receive will be

disabled while the cable is connected to the

radio.

• The radio will abort a secure transmission

when there is not a valid encryption key. When

this happens, the display shows “KEYFAIL,”

and a continuous keyfail tone (consecutive

medium-pitched beeps) sounds until the PTT

switch is released.

21 General Radio Features Operation

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Motorola III User Manual Page 22

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