7
3
If you plan to use the optional external speaker/s (MBXSPK), there
are two options. For a single speaker, plug into the upper 3.5 mm
SP jack on the rear of the radio to hear both bands through one
speaker. To use dual speakers, use the optional Y cable (MBXYCBL)
and plug it into the lower 3.5 mm ST jack on the rear of the radio to
split the left and right bands between the two speakers. See page 29
for programming this function.
For voice communications, connect a microphone equipped with
an 8-pin modular plug into the modular socket on the right side of
the control head. Press firmly on the plug until the locking tab clicks.
Attach the supplied microphone hanger in an appropriate location
using the screws included in the screw set.
When programming this radio for the first time with the optional
PC Programming Kit, RPS-DB750X-USB, it is recommended you first
READ this radio with the software and then save the file for future
reference. In addition, after you READ this radio with the software,
make your programming and frequency changes, then send this
program back to your mobile radio.
Initial Installation
EXTERnAl SpEAkER
MicRophonE
pc SoFTwARE pRoGRAMMinG
Ask your dealer about purchasing a Programming Kit:
RPS-DB750X-USB.
AccESSoRiES connEcTionS
External Dual Speakers
(Use optional audio Y cable)
Microphone (MBXDTMF)
Antenna (MBXGAIN)
NOTE
Microphone
connector
�
V/M
HM
SCN
LOW
1
4
7
8
9
0
#
5
6
2
3
PA
MIC
PB
A
B
A
A/B
B
PC
PD
MAIN
Speaker (MBXSPK)
Audio Y Cable
(MBXYCBL)
External
Single
Speaker
External Speaker
(MBXSPK)
