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Phone: 216-265-2315 Fax: 216-267-2915
www.mentorradio.com
(11/11)
M2115 OWNERS MANUAL
Solutions for Advancing Communications
M2115B-xx [7.3]
The M2115B can rest on a shelf or a desk when ordered as the standard tower mechanical configuration, or installed in a
rack mount when ordered in the rack mount mechanical configuration (M2115B-RM). Since this unit contains a cooling
fan, when located on a desk or shelf, do not place equipment, papers, magazines, etc. near where they would restrict air
flow through the left and right side vent ports thereby reducing its cooling capability.
Install a suitable power cord for local power used. A line replaceable fuse is inside the power plug. To remove the fuse,
the cord must be removed first which is done with lightly prying pressure. The exposed fuse is the operating fuse and a
spare fuse is located inside the fuse holder tray.
The antenna connector is a TNC style connector. If the antenna coax does not mate with this type, adapters are available
from Mentor Radio or from many electronic distributors.
The antenna should be either a wideband type (118-137 MHz) or a narrow band type tuned to single channel or a very
narrow range of frequencies. If a 3 or 6 dB gain antenna is used, communications range can be increased, because gain
antennas effectively increase both receiver sensitivity and transmitter power. Care should be taken using gain antennas
as many specify gain in a specific direction only. A directional antenna may reduce range in other directions in order to
increase gain in a single direction. Depending upon your application, this may be acceptable. Low loss coaxial cable is
also recommended, especially if the cable length exceeds 30 feet (10 meters).
Connections for remote operation for the M2115B-XX, when needed, are made via the 25 pin connector (type DB25) on
the rear of the cabinet. Theses cables must be custom made by Mentor Radio to fit the needs of the customer. The cable
is not standard, so please ask Mentor Radio to supply the cable with the radio. To install the interface cable, plug the
green housing into the back of the TTP (tone termination panel) and plug the DB25 connector into M2115B-xx. If there is
a custom interface that does not involve the TTP, then follow the instructions that Mentor Radio provides over the phone
or through e-mail for the custom configuration.
Refer to Remote Control Installation [7.5]
for installation/planning of a
remote control interface to work with the M2115B.
Plug a microphone into the microphone jack on the front panel of the M2115. Be sure the plug is pushed all the way into
the jack before turning the radio on.
Global Positioning System (GPS) Module [7.4]
Future feature, not currently available.
** To install the GPS module, a #2 Philips Head screwdriver is required.
1.) Remove the rear panel GPS module cover plate by unscrewing the two screws that hold the plate on.
2.) Press the GPS module connector onto the mating connector on the rear panel. Press firmly to ensure the
connector is fully seated.
3.) Install cover plate over module and fasten the two screws removed from step 1.
4.) Install GPS antenna in a suitable location. Route antenna cable to radio. Connect to the GPS module mating
connector (SMA style connector). NOTE: The GPS antenna must be exposed to the sky although placing it on a
dashboard may be acceptable. For optimal sky view an externally mounted antenna is better. Review user
requirements before deciding on antenna installation location.
5.) To enable the GPS feature of the radio, see the
screen controls
.
** This feature is not currently available.
