Specifications

4-38 800 MHz System Planner R4-11-4G
PORTABLE EQUIPMENT
Portable Radio Modem 660
4.4 Portable Equipment
This section covers the portable radio modem (PRM) 660.
Private DataTAC portable configurations include field computers that can be
vehicle-mounted and connected to a radio modem. A portable computer can
connect to a radio modem to communicate with a host network.
The system designer can choose the notebook with the portable radio
modem (PRM) 660 for portability:
4.4.1 Portable Radio Modem 660
The PRM 660 is a three-watt portable radio modem that provides
connectivity between a data terminal, notebook computer or other DTE
devices and a customer’s host computer, through the Private DataTAC
network. These are half-duplex packet modems that operate only in concert
with the full duplex Private DataTAC infrastructure, and are not designed
for direct, unit-to-unit or circuit-switched operation.
The standard model package includes:
• AC Wall adapter/trickle charger, which plugs directly into the PRM 660
and trickle charges the battery while it is in the unit
• SMB remote antenna connector (external antenna adapter cable
(FKN4399) is required to connect the PRM 660 to external antennas that
are terminated with mini-UHF connectors)
• 650 mAh three-cell 7.5-volt nickel cadmium (NiCd) battery (FLN6840)
(battery includes approximately 3.5 hours of use under normal operating
conditions)
• Internal and flip-up antenna
• RJ45 serial port (cable not included)
• PRM 660 Quick Reference card
• PRM 660 Portable Radio Modem for Private DataTAC Networks Owner’s and
Installation Manual
F2274 • PRM 660 800MHZ 3WATT PRIVATE
F2274 is a three-watt portable radio modem (PRM) in the 806-824 MHz
transmit (Tx) range 851-869 MHz receive (Rx) range, with 12.5 kHz or 25 kHz
channel spacing.
The top of the unit has a flip-up antenna, an LCD, four arrow keys, home
key, help key, four soft keys (works with the display), and a battery charger
indicator.
The side of the unit has an external antenna connector, an external power
connector, and an eight-pin serial port connection.