Naval Research Laboratory, 4555 Overlook Ave. S.W., Washington, D.C., 20375

58 -- WIRELESS TELEPHONE SYSTEM SOL N00173-98-Q-0114 POC Darlene Copp, Purchasing Agent, (202) 767-2374 The Naval Research Laboratory has a requirement for a Portable Cellular Test Bed System consisting of local exchange controller to manage the wireless call process functions including the AMS protocol and the PSTN voice interconnection which provides software based control of radio base station equipment, call processing, switching, management for 2000 subscribers and operations, administration, and maintenance functions of the system. Controller must support up to 4 cell sites, 4 control channels, 4 locate receivers, 31 voice channels, 8 direct inward dialing ports, and up to 24 direct outward dialing ports. 8 radio channel units providing interface to the mobile telephone subscribers via one transmitter and two receivers (2 antenna frequency diversity) per unit, 8 power amplifiers to amplify the radio channel unit transmitter power to 45 watts per power amplifier unit, 1 power distribution unit and master oscillator to provide frequency control, (1) 8 port combiner to combine the transmitter outputs for connection to the transmit antenna, 1 receiver multicoupler to distribute the 2 receive antenna outputs to the 16 radio channel unit receivers required for frequency diversity reception, 1 antenna duplexer to isolate the transmit and receive channels and filter harmonics from the power amplifier outputs, 3 antenna units to provide the transmitter and two receive antenna functions for one sector of a three sector base station installation, 1 AC to DC power system to convert 110 to 220 Volts AC primary power into DC power required by the telephone system, 1 documentation unit that describes the operation and maintenance of the telephone system and any software required for the controller or external computers that may communicate with the portable cellular test bed system. Please visit our web site http://heron.nrl.navy.mil/supply for a copy of solicitation package. Paper copies will not be issued. See Note(s): 1. Posted 08/13/98 (I-SN236560). (0225)

Loren Data Corp. http://www.ld.com (SYN# 0365 19980817\58-0005.SOL)