User's Manual

WinLink User and Installation Guide Version 1.770 H-156
Fade Margin (FM) the margin taken in consideration as part of the
parameters needed as spare for high availability. Min level accepted by
the LBC is 6dB.
EIRP Tx Power + Antenna Gain (*) – in some products they are limited
to a max value due to local regulation and type approval.
Example 1
10 x Log (Value in mW) = (Value in dBm)
1W is the maximum EIRP (Tx Power + Antenna Gain (*)) that is
allowed in 5.4 GHz ETSI products by ETSI regulation, (*) considering
cable loss.
Note: 3 dB = 2 x Power
1W = 1000 mW  10 x Log (1000) = 30 dBm
2W = 2000 mW  10 x Log (2000) =33 dBm
Max/ Min range (distance) WinLink sensitivity threshold in -60dB range
-30 dBm < RSS (sensitivity) <-90 dBm, in addition Propagation Delay
is also considered 3.3uS / 1 km (refer to Throughput vs Distance
guideline)
Example 2
RSS = Tx(power) + Ant(Tx) + Ant(Rx) – loss
loss = 32.5 + 20 Log (D) + 20 Log (f);
D – Distance in km, f – Center Frequency
Climate/Terrain Factor, see Figure H-3 and Figure H-4.
Expected FM and RSS, refer to A and B
Required Antenna Height, this is the required antenna height
considering the Fresnel Zone. Refer to WinLink site-survey guideline.
based on antenna beam
Considering LOS (clear
Line of Site )
Channel Bandwidth is required with the available Radio Frame Pattern
(RFP) for collocated HSS systems.