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Mimosa Backhaul Mounting & Grounding

Mounting and Grounding the B5

This process ensures that the radio is securely attached to a mast/pole up to 90 mm (3.5 inches) in

diameter, and grounded to protect against electrical discharge.

Note that when operating in the U-NI-1 band (5150-5250 MHz), the FCC requires operators to adhere to

the following EIRP limit above certain elevations: “Maximum e.i.r.p. above 30 degrees measured from the

horizon ≤ 125 mW (21 dBm)”.

󰾬EIRP must be under 21 dBm at all elevations angles above 30 degrees. If operating in U-NII-1 band, the

installer has to take into account the elevation angle of each particular installation and radiation patterns

of the antenna used to determine the maximum allowable transmit power.

For example, consider the antenna pattern shown below of the B5 antenna, and the 25 dBi antenna used

for the B5c. If this antenna was installed at 5 degrees downtilt, maximum antenna gain should be noted in

the radiation pattern, at angles 5 + 30 = 35 degrees. In this case, it is -1 dBi. EIRP = transmit power +

antenna gain < 21 dBm. Thus transmit power should be limited to 21 dBm – antenna gain = 21 dBm – (-1

dBi) = 22 dBm.

The parabolic antenna pattern below represents both vertical and horizontal planes.

Summary of content (4 pages)

PAGE 1
Mimosa Backhaul Help Content Mimosa Backhaul Mounting & Grounding Mounting and Grounding the B5 This process ensures that the radio is securely attached to a mast/pole up to 90 mm (3.5 inches) in diameter, and grounded to protect against electrical discharge. Note that when operating in the U-NI-1 band (5150-5250 MHz), the FCC requires operators to adhere to the following EIRP limit above certain elevations: “Maximum e.i.r.p. above 30 degrees measured from the horizon ≤ 125 mW (21 dBm)”.
PAGE 2
Mimosa Backhaul Help Content Mimosa Backhaul Mounting & Grounding Follow these steps to mount and ground the B5 Radio. 1. Using a #4 Allen wrench (eight inches or longer recommended), attach the Bracket Assembly to the back of the B5 with four provided M6 x 10mm SST Button Head Cap Screws.
PAGE 3
Mimosa Backhaul Help Content Mimosa Backhaul Mounting & Grounding 2. Remove the two nuts from the same side of the Pole Mount. Feed the bolts through the Bracket Assembly with one bolt through the fixed hole, and the other bolt through the slotted arc. Thread the two nuts onto the bolts on the outside of the Bracket Assembly, and then tighten loosely (some adjustment is required in a later step). 3.
PAGE 4
Mimosa Backhaul Help Content Mimosa Backhaul Mounting & Grounding obstructed or inaccessible, disassemble the other side of the Pole Mount and then reassemble it around the pole. 4. Aim the radio using physical Elevation and Azimuth movements, then check and tighten each of the bolts until secure. 5. Attach a 6 mm2 (10 AWG) ground wire with a maximum length of 1 m (3.3 feet) between the Bracket Assembly of the B5 and a suitable grounding location on the tower or structure.