User's Manual

2. Preliminary Decisions
AMPS EAC-2100 Manual: (Draft, 02/01) Page 2-3
2.2 Use of Multi-Hop
™
Configuration or Multi-Donor
™
Units
Multi-hop operation involves setting up two or more EAC-2100 units to operate together in a line. This
configuration is described in greater detail in Section 7.
Note that no additional equipment is required at neighboring cell sites along the multi-hop path. The
MAHO feature of the TIA/EIA-136 system allows the cellular system to hand off a subscriber from the
EAC-2100 multi-hop coverage area to any neighboring cell.
If either of these arrangements is to be used, system parameters will need to be set accordingly.
2.3 Site Requirements
The site chosen for the EAC-2100 must meet requirements related to location, electrical service, space,
and mounting surface, as described below.
2.3.1 Location
Distance from Donor Cell. If a line-of-sight path between donor cell and booster is maintained
and a high-gain dish antenna is used, the EAC-2100 may be placed up to 92 km away from the
donor cell.
Distance from Antennas. The unit should be placed as close as possible to the antennas to
avoid excessive cable loss. Losses should be kept to 3 dB or less for each antenna cable. In
addition, tower-mounted preamplifiers (TMAs) may be used to improve reverse-path sensitivity.