1. Calculate the nominal Receive Signal Level (RSL) at the input of the receiver in dBm assuming free space conditions.

2. Briefly discuss the purpose of the passive repeater in this system?

The digital microwave radio system shown in Fig 1 below operates in the 18GHz radio frequency band and provides 2x2 Mbps transmission capacity between two sites. The system deploys a passive repeater.

Transmitter
RF Output Power ? High Power Version:	+23 dBm	At Transmission port
RF Branching loss	3 dB	From Transmitter to antenna
Receiver
RF Branching loss	4 dB	From Antenna to Receiver
AntennaParameters
0.6 m (dimensions)	39.5 dBi (Gain)

Figure 1:Microwave Link Configuration

Transcribed Image Text:

TX RX +23 dBm ↓ BR 1.5 dB 0.6m 0.5km Frequency band: 18GHZ 0.6m 1 dB 0.6m 0.6m J 4.5km 1.5 dB BR +23 dBm TX RX TX RX +23 dBm ↓ BR 1.5 dB 0.6m 0.5km Frequency band: 18GHZ 0.6m 1 dB 0.6m 0.6m J 4.5km 1.5 dB BR +23 dBm TX RX

Answer rating: 100% (QA)

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