User Guide

NEM-2
System Module and User Interface CCS Technical Documentation
Page 60 Copyright Nokia. All rights reserved. Issue 1 07/03
Front End
The front end features include:
- Antenna 50 ohm input
- RX GSM1900 single output, RX GSM850 balanced output
- TXs single 50 ohm input
-3 control lines from the Helgo
Figure 18: Front End
V _ a n t 1 , 2 , 3
A n t e n n a
T X
G S M 8 5 0
T X
G S M 1 9 0 0
R X
G S M 8 5 0
R X
G S M 1 9 0 0