User's Manual

111
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Appendix H
H-1
TR-5A Series
Tranzeo Wireless Technologies
Step 1: Finding the Location
The following are some of the steps you should go through when
planning a Point to Point (PxP) link.
• Determine the 2 endpoint locations.
• Calculate the distance between the
locations.
• Find the heights of the locations
Step 2: Check the Line of
• Make sure that the line of sight is clear of obstruction.
• Check your Fresnel clearance with calculations to verify that you have enough room in
the center of the path.
• Take photos of the line of sight from both sides of the proposed link.
• See example 1 below.
Example 1: Fresnel Zone Calculation
Step 3: Choose Hardware
Free space attenuation = 36.6 + 20log F + 20log D
where F = frequency in MHz and D = distance in
miles
Free Space Loss
Appendix H: PxP Install Checklist
Link Distance
Tower Heights
Fresnel zone
The cross section radius of the Fresnel zone
is the highest in the center of the RF LoS
which can be calculated as:
where r = radius in feet,
d = distance in miles,
and f = frequency in GHz.
)4/(3.43 fdr =
• Select the hardware appropriate for the distance and type of link that you are installing