3.4.1 Indoor Installation
Prior installation, complete the necessary preparation for the mounting brackets, grounding and laying of
cables. Grounding is very important for the transmission and reception of radio waves not only by
preventing induction impedance and reducing harmful noise but also by effecting antenna performance.
Take sufficient caution when performing grounding work and follow the instructions carefully.
(a) Construct mounting brackets and weld them to the ship wall.
(b) Weld the grounding terminal to the wall of the ship.
ANTENNA
TERMINAL
CONTROL CABLE
RF CABLE
RUBBER
VENTILATION TUBE
EARTH PLATE
JRC
UNIT [mm]
NQD-4190
Junction Box
RG-10/U
MPYCYS-12
WELDING
MAX. 500
4-M10
4-M8
600
250
GROUNDING
TERMINAL(*1)
SOLDERING
(*1) GROUND TERMINAL
130
90
6ZPKD00084 (JRC supply)
WIDTH: 50
LENGTH: 350
THICKNESS: 0.3
MOUNTING BRACKETS
(DOCK supply)
MOUNTING BRACKETS
(DOCK supply)
STAND-OFF
INSULATOR (SK-70)
SHIP WALL
TO ANTENNA
MOUNTING BRACKETS
(DOCK supply)
WELDING
L=0.6m
L=0.2m
EARTH CABLE(*2)
(*2) EARTH CABLE
7ZCJD0144 (JRC supply)
EARTH CABLE
Figure 3-7 ANTENNA TUNER Installation (Indoor)
23
To Next Page
Loading...
