Maxon Telecom UM-SL55 - Manual (Page 12)

vertical. Press and hold the PTT button on the side of the
radio, and begin speaking in a clear, normal tone. Release
the PTT button when you have finished speaking.
CAUTION: Operation of the transmitter without a proper
antenna fitted may result in permanent damage to the radio.
NOTE: The radio’s LED will illuminate red continuously when
you have the PTT button pressed and are transmitting. If the
red LED starts “flashing”, the battery needs to be recharged
and transmission will cease. Recharge the battery fully
before attempting further transmissions.
RECEIVE
When you have finished transmitting, release the PTT button
to receive.
STATUS INDICATORS AND AUDIBLE ALERT TONES
The SL55+ radio has a microprocessor control, which
provides a range of audible alert tones. Upon each power-
up, a quick melody* indicates that the self-test of the
microprocessor functions has been completed. A sequence
of audible tones* may be sounded with any of the following
conditions:
• Attempting to transmit on a channel set for
receive only
• Attempting to transmit on a channel that is
already in use when busy channel lockout has
been programmed into the radio*
• Transmitting time has exceeded time-out timer
programmed length*
• Low battery condition
• Selecting a channel with no programmed
frequency
* Indicates a function that is initially programmed into the radio
by your Maxon dealer.
Note: All audible tones can be programmed off for silent
operation.
ENGLISH
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