Specifications

MOBILE EQUIPMENT
Vehicular Radio Modem 660
R4-11-4G Equipment Descriptions 4-29
4.3.3 Vehicular Radio Modem 660
The VRM 660 is a three-watt radio modem that provides connectivity
between a data terminal, notebook computer or other data terminal
equipment (DTE) and a customer’s host computer through the Private
DataTAC radio network. The VRM 660 is primarily intended for remote
mount automotive installation and requires a 12V DC negative ground
source from the vehicle, connected through its standard automotive power
connector.
The VRM 660 has an integrated radio packet modem configurable for private
RD-LAP protocols. These half-duplex packet modems operate only in
concert with the full duplex Private DataTAC infrastructure, and are not
designed for direct, unit-to-unit or circuit switched operation.
Included with the VRM 660 is as follows:
• 20-foot power cable (FKN4448)
• Installation kit that includes mounting bracket hardware, mating
antenna connector, and remote on/off control connector
• Remote on/off control connector that is a four-pin Molex® plug and
crimp-on pins for using the remote off/on feature (FLN8938)
• Native mode and transparent mode (AT commands) interface
• TNC-type crimp-on connector (Motorola part number 09-80372A88)
• VRM 660 Vehicular Radio Modem for Private DataTAC Networks Owner’s and
Installation Manual
F2168 • VRM660, 3WATT 800MHZ PRIVATE DATATAC
F2168 is a is a Vehicular Radio Modem in the 806-824 MHz range, with 12.5
MHz and 25 MHz channel spacing. The front of the unit has a power switch
and a DB-9 female serial port (serial cable not included).
The back of the device has a remote control connector, a threaded BNC
(antenna) connector (TNC), and a 12V DC two-pin power connector.
CABLE, 14IN DB9 M-F
DTE
FKN4520 Adds a 14-inch DB-9 M-F cable that collocates the MW-520
with the VRM.
CABLE, TRIMBLE GPS
DB9, 20FT
FKN4548 Adds a 20-foot DB-9 M-F cable that connects the VRM to the
Trimble receiver.
KEY LOCK MOUNTING
KIT
HLN6372 Keylock mount for dash or remote mount.
Table 4-24. Hardware Accessories for VRM 650 (Continued)
COF DESCRIPTION
ACCESS.
NUMBER
DESCRIPTION