RX LEVEL
ADJUST
TX LEVEL
ADJUST
RX RANGE
SWITCH
3019 Alvin DeVane Blvd.
Ste. 560
Austin, TX 78741
Phone: (650) 965-8020
CORPORATION
®
TECH SUPPORT: 650-965-8020 ext. 703
Questions or technical issues? Please call:
Page 3 of 5
RX Audio level is normally set by the volume
control on the mobile radio.
If further adjustment is needed, RX LEVEL
control can be used to adjust RX volume.
MS-900MAX Controls and Adjustments
TX Audio level is normally
factory-preset to the correct
level for the radio type specified
when the MS-900MAX is
ordered.
If a different TX level is required
the TX LEVEL can be set from
0 (highest) to F (lowest) to
accommodate various radios.
Call Setcom Tech Support for
assistance if needed.
MS-900MAX shown with top
cover removed
If RX LEVEL control does not provide enough
adjustment range, the RX RANGE switch can
be set to allow higher or lower level settings.
RX RANGE
SWITCH
(shown enlarged)
ON
OFF
Section 2
Section 1
For Factory Calibration
DO NOT ADJUST
NOTE: Remove top cover carefully to make sure internal
cables, wiring, and ground contacts do not get damaged!
Inner Nut
NC
S12S
1212C
TX
C
A
L
TX
L
EVE
L
RX
RANGE
RX
LE
VEL
OFF
ON
N O
1 2
Default is both sections
set to OFF
To increase RX Level,
set section 1 to ON
To decrease RX level,
set section 2 to ON
Do not set both sections
to ON, use only one
section or the other
