User Manual

Introduction
Version 4 1-1 04/02/04
1 Introduction
The new Extend-A-Page VHF Transmitters specifically designed for use as a
high quality exciter to Eagle’s low and high power transmitters. In addition,
the Extend-A-Page VHF Transmitter can be used as an exciter for non-Eagle
Wireless International Transmitters. Furthermore, the Extend-A-Page can be
used to provide fill-in coverage in those locations where normal paging
service from a citywide paging system is not adequate. The Extend-A-Page
system consists of the Extend-A-Page Receiver and the Extend-A-Page
Transmitter unit. The Extend-A-Page receiver receives the control link of the
standard paging frequency RF signal on any standard control link or paging
frequency and converts this information into low power paging transmissions
on all of the common paging frequencies. The control Link reception can be
either on a local or an elevated antenna depending on the signal strength.
The Extend-A-Page transmitter transmits the paging information on VHF
frequencies up to 400 Milliwatts (mW) level directly into hard to reach
locations, such as hospitals, underground structures, large industrial plants,
and many locations near the outer coverage contour of paging systems. The
Extend-A-Page system is designed to be easily installed and can be located
in any part of a building without special hook-ups. If there is no control link
available and receive and transmit frequencies are identical, then special
caution should be used to provide directional antennas and physical
separation between the receiver and transmitter. Failure to take these
precautions may result in the receiver being interfered with by the signal that
is being retransmitted. A minimum of 100 dB of isolation between the
Extend-A-Page receive and transmit units is recommended. The Extend-A-
Page VHF transmitters are ideally suited for simulcast applications handing
high speed paging data.