ITEM # 602100023500
DOCUMENT TYPE:
Operation and Installation Manual
REV:
A
DOC #:
602100023
PAGE 6 OF 16
TITLE:
Bi-Directional Amplifier System
Service antennas are also fixed mounted and covered by the same MPE considerations as the donor
antenna. However, this assumes that the area is always general population/uncontrolled and that the
minimum distance in most installations will be less than 3 feet. According to Table 1(B) of Section
1.1310, the power density at 894 MHz is 0.596 mW/cm
2
. The maximum output power in the 48960
downlink (base to service area) is less then +19 dBm (80 mW). Assuming no feeder cable loss and a
service area antenna gain of 11 dB, a safe minimum separation of 10 inches (25 cm) is required to
stay within the MPE.
1.05 x 1000 mW/3.14 x 25
2
= 1050/1962.5 =0.535 mW/cm
2
Therefore, the service area antenna should be mounted such that no body part of any person may
come closer than 10 inches (or 25 cm). The service area antenna gain is 11 dB in the example
above, but may be increased to make up for cable and/or splitter or tap losses. For example, if a 2-
way splitter is used to provide for two antennas in different parts of the service area, then the antenna
gain may be increased to 14 dB to make up for the loss of the splitter 3.6 dB. The maximum service
area antenna gain for any specific location can be calculated as follows: 11 dB+ accumulated losses
to the antenna.
Product Overview
Field Tune-up, Alignment or Calibration
There is no field tune-up or calibration necessary for the 48960 bi-directional amplifier. These units
are aligned and calibrated at the time of manufacture and are designed to retain calibration
throughout the life of the product. Manual gain adjustment is provided to optimize the installation and
discussed in Section 10.
FCC ID and Canada Certification Numbers
The listed models have been tested and granted certification by the FCC in accordance with CFR
Title 47, Part 90 and by the DOC in accordance with RS 131, Issue 131.
The FCC identification number for each particular model appears on a label on the faceplate of the
unit. Applicable FCC identification and Canadian ISC numbers are as shown:
FCC ID
Canada
IWD48960
1634B-48960
