Motorola PTP 400 Series - Manual (Page 173)

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13.9.2 ODU Mounted Indoors
Where the ODU is mounted indoors, lightning arrestors should be deployed where the
antenna cables enter the building as shown in Figure 92.
To Antenna
Lightning Arrestors Mounted
On grounding plate
Equipment Cabin
ODU Ground Bonding
Equipment Rack
Figure 92 - Lightning Arrestor Mounting