User's Manual

10
2. Description
The UDCs(Up Down Converters) are basically bi-directional amplifiers that sharply
filters out unwanted noise.
2.2.3 UDCs (Up Down Converters)
900MHz
Downlink
Input Port
Uplink
Output
Port
800MHz
Uplink
Input Port
Downlink
Output
Port
900MHz
Uplink
Input Port
800MHz
Downlink
Input Port
a. iDEN
b. CDMA
RF OUT RF OUT
UL PLL
UL ATT DL ATT
DL PLL
RF INUL UDC DL UDC