TX RX Systems Inc. Manual 7-9322-5 08/09/06 Page 8
because the receiver multicoupler, which is incor-
porated in the MCA, serves this purpose.
Installing the System
Figure 4
illustrates the cable connection points for
both the tower-top box and the MCA. Installation of
the AutoQuad TTA system should follow the
design standards listed in
Figure 5
. Lightning
surge suppressors are incorporated throughout the
system; refer to items 1, 6, and 7 listed in figure 5.
In addition, surge suppression is also provided for
all cable connections within the tower-top box.
Proper grounding techniques MUST BE observed
for these devices to perform properly. See the fol-
lowing sections for specific installation instructions.
Installing the Tower-Top Box
Figure 6
shows some of the mechanical features
of the tower-top box. Four mounting tabs are
welded to the back of the box to allow for fastening
to the tower.
Because of the varied tower types,
the customer must fabricate the interface brackets
between the tower and the box
.
1) Mount a receiving antenna on the tower.
21.06"
6.69"
Mounting Tabs
.312 Dia Thru
Mount Holes
4 Places
Figure 6:
Tower-top box mechanical details.
Figure 7:
Application of rubber splicing tape.
NOTE: Additional waterproofing protection can be realized by
covering the rubber tape with either “Scotch Kote” or Vinyl Plastic Electrical Tape (“Scotch” brand 33+).
Ground Lug
Test Port
Transmission
Line
Antenna
Feedline
Main
Transmission
Line
Содержание 424-86A-03
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