Vertex Standard VX-920 Series Operating Manual page 14

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 trans-
mit, 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.
Note 1): Save the original plastic cap and its
mounting screws. They should be reinstalled
when not using the Speaker/Microphone.
2) When you press the PTT switch on the
Speaker/Microphone, it disables the internal
microphone, and vice versa.
Do not remove/install the Speaker/Micro-
phone in a hazardous location.
12
O
PERATION
If the Busy Channel Lockout feature has been pro-
grammed on a channel, the radio will not transmit
when a carrier is present. Instead, the radio will
generate short beep three times and indicate
" CH Busy CH Busy CH Busy
CH Busy 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 PTT
switch and wait for the "penalty timer" to expire.
VX-920/-970 S
" on the display (16-key and 4-
*
O
ERIES PERATING
M
ANUAL