User's Manual

Installation of Radio and Antenna
51
Version 1.0
Figure 6-11
Modem
Procedure 6-6
Fine-adjust Align Radios
Use this procedure to fine-adjust the alignment of the radios.
At the first end:
(a) Pan or move the antenna horizontally at one end across the entire
beamwidth to identify the Main Lobe and the two side lobes. See Figure
6-8. Place a mark on the radio bracket to identify Main Lobe and each of
the Side Lobes. The Main Lobe is approximately 2 degrees in width. The
two Side Lobes are approximately 5 degrees apart.
(b) Tilt or move the antenna vertically and locate the strongest receive signal
reading.
(c) Pan or move the antenna horizontally and locate the strongest receive
signal reading.
(d) Tighten the bolt to lock the antenna in place.
At the other end:
(a) Pan or move the antenna horizontally at one end across the entire
beamwidth to identify the Main Lobe and the two side lobes.
(b) Tilt or move the antenna vertically and locate the strongest receive signal
reading.
(c) Pan or move the antenna horizontally and locate the strongest receive
signal reading.