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If a Speaker/Microphone is available, remove the
plastic cap and its two mounting screws from the
right side of the transceiver, then align the con-
nector of the Speaker/Microphone on the trans-
ceiver body; secure the connector pin using the
screws supplied with the
Speaker/Microphone. Hold
the speaker grille up next to
your ear while receiving. To
transmit, press the PTT switch
on the Speaker/Microphone,
just as you would on the main
transceiver's body, and speak
into the microphone on a nor-
mal voice level.
1): Do not remove/install the Speaker/Mi-
crophone in a potentially explosive atmo-
spheres.
2): Save the original plastic cap and its mount-
ing screws. They should be reinstalled when not
using the Speaker/Microphone.
3) When you press the PTT switch on the
Speaker/Microphone, it disables the internal mi-
crophone, and vice versa.
12
O
PERATION
If the Busy Channel Lockout feature has been pro-
grammed on a channel, the radio will not trans-
mit when a carrier is present. Instead, the radio
will generate short beep three times and indicate
CH BUSY
"
key versions). Release the PTT switch and wait
for the channel to be clear of activity.
If CTCSS or Digital Coded Squelch (DCS) Lock-
out has been programmed on a channel, the radio
can transmit only when there is no carrier being
received or when the carrier being received in-
cludes the correct CTCSS tone or DCS code.
Automatic Time-Out Timer
If the selected channel has been programmed for au-
tomatic time-out, you must limit the length of each
transmission. While transmitting, a beep will sound
10 seconds before time-out. Another beep will sound
just before the deadline; the "TX" indicator will dis-
appear and transmission will cease soon thereafter.
To resume transmitting, you must release the
switch and wait for the "penalty timer" to expire.
VX-920ATEX S
" on the display (16-key and 4-
O
M
ERIES
PERATING
ANUAL
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