User’s Manual for Node G
Network Elements
Page 42
M0121A2A.doc
4.3.6. UL and DL Duplexer
The duplexer is used to isolate the uplink from the downlink, i.e. to separate the
transmitting path from the receiving path. The pass band of the duplexer is the full
band (EGSM). This allows the same Node G to be used regardless of its operator’s
frequency plan.
The UL and DL duplexers have multiple outputs, including the primary and extension
path, plus forward and reverse probes used for auto setup, VSWR, and RSSI
functions.
figure 4-14 Duplexer, UL IN figure 4-15 Duplexer, DL IN
figure 4-16 Duplexers installed
LN
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