User Guide

RM-208 PWB bottom

Table 11 GSM TXFEM / Antenna load switch CONTROL

Vgain GMSK=0

EDGE=1

GSM850 GSM900 GSM1800 GSM1900

RX TX RX TX RX TX RX TX

VC1_TXFEM 0 1 0 1 0 1 0 1

VC2_TXFEM 0 0 0 0 1 1 1 1

VC3_TXFEM 1 1 0 1 0 1 1 1

RFC4 1 1 0 0 0 0 1 1

RFC9 0 0 1 1 1 1 0 0

RM-208

RF Troubleshooting and Manual Tuning Guide Nokia Customer Care

Issue 1 COMPANY CONFIDENTIAL Page 7 –7