Vertex Standard EVX-534 Operating Manual page 17

r If a Speaker/Microphone
is available, remove the
plastic cap and its two
mounting screws from
t h e r i g h t s i d e o f t h e
transceiver, then align
t h e c o n n e c t o r o f t h e
Speaker/Microphone
on the radio; 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 normal 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 Speak-
er/Microphone, it disables the internal micro-
phone, and vice versa.
r EVX-534/-539 radios have two modes of DMR
operation to maximize spectrum efficiency. Stan-
dard operation requires use of a TDMA repeater
EVX-534/-539 O
pErating
o
peration
A
DEF
B
MNO
C
CXL
WX
YZ
M
anual
(such as the EVX-R70) to utilize the repeater's
dual time slot capability for doubling your radio
fleet's communication paths for up to two simul-
taneous transmissions. The second mode is Direct
mode, which enables two communications paths
on a single frequency, doubling your capacity
with only the subscriber radios. No repeater is
necessary when operating in Direct mode.
r If the BCLO (Busy Channel Lockout) feature
has been programmed on an analog channel, the
radio will not transmit when a carrier is present.
Instead, the radio will generate short beep three
times. Release the PTT switch and wait for the
channel to be clear of activity.
r If the BTLO (Busy Tone Lockout) feature has
been programmed on an analog channel or
CCLO (Color Code Lockout) feature has been
programmed on a digital channel, the radio
can transmit only when there is no carrier be-
ing received or when the carrier being received
includes the correct tone (CTCSS tone or DCS
code) on an analog channel or correct code on a
digital channel.
15