INTRODUCTION
The Dual E1 version of TRACER provides two, individual E1 transports via a 2.4 GHz or 5.8 GHz,
direct sequence, spread spectrum microwave link. The transmitter output power is 20 dBm maximum
while the receiver sensitivity is -89 dBm @ 2.4 GHz and -87 dBm @ 5.8 GHz. System performance is
determined, in part, by the engineering of the microwave link. Each TRACER radio is comprised of two
components – the baseband processor and the radio frequency converter (RFC). The E1 interfaces
(G.703, G.704 compliant) are provided on the back of the baseband processor, which is mountable in a
515 mm rack. The radio frequency converter is rackmountable adjacent to the baseband processor or
mastmountable in a weatherproof enclosure, located up to 110 meters apart, using RG-8 style coax. A
single coaxial cable connects the baseband processor (via a Type N connector) to the RFC and another
coaxial cable connects the RFC to the antenna (via a Type N connector).
Applications
Any application that would typically use metallic E1 as a transport can use the TRACER instead. Figure
1-1 illustrates a typical application.
In addition to telephony applications, TRACER can be used in data communications such as inter-
networking, video conferencing, and telemetry.
Spread Spectrum
Spread spectrum is a form of communication in which the bandwidth of a message signal is intentionally
increased or “spread.” There are two methods of spreading -- frequency hopping and direct sequence.
TRACER employs direct sequence spread spectrum.
SECTION 1 TRACER DESCRIPTION
TRACER 2 x E1 User’s Manual 1
Figure 1-1. Typical Application