Measure The Antenna Height - Javad Prego Operator's Manual

S E T U P A N D M E A S U R I N G
3
Prego Setup

Measure the Antenna Height

The location of the antenna relative to the point being measured is very
important for both measuring in which the elevation of the points is
important and in measuring for horizontal location only. The reason this is
important in horizontal measuring is that they are often larger in area than
can be reliably fitted to a flat plane, therefore the adjustment must be done
in three dimensions and then projected onto a two-dimensional plane.
The receiver calculates the coordinates of the antenna's phase center. To
determine the coordinates of the station marker, the user must specify the
following:
Antennas have two types of measurements:
2. Measure the antenna height above the point or marker. The antenna
The Antenna-2 (Figure 3-1 on page 3-3) and Antenna-3 (Figure 3-2 on
page 3-4) antenna offset lines of measurement are shown in the following
drawings. The measurements for these offsets follow each drawing
(Table 3-1 on page 3-3 for Antenna-2 and Table 3-2 on page 3-4 for
Antenna-3).
3-2 Prego Operator's Manual
• Measured height of the antenna above the station marker
• Method of measuring the antenna height
• Model of the antenna used
• Vertical – measured from the marker to the antenna reference point
(ARP) located on the bottom of the antenna at the base of the mounting
threads.
• Slant – measured from the marker to the lower edge of the antenna slant
height measure mark (SHMM) located on the antenna radius.
height can be measured vertically to the base of the antenna or slantwise
to the lower edge of the seam around the antenna.
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