Symptoms anticipated:
• radiated power degradation, e.g. signal bar is low compared to other phones
Required equipment:
• call test
• ASM coupler
• RF cables
You can use the following table for the coupling loss for the main GSM coupler; you may also need to include
RF cable loss.
Attenuation values for inductive RF coupler SA-112
Band
Channel
Attenuation
RX
Tolerance RX Attenuation
TX
Tolerance TX
Reported
power
GSM 850
Low 128
11.8
+/-4.5dB
14.2
+/-4.5dB
31.7'+/-4.5dB
Mid 189
11.1
13.6
High 251
10
12.9
RM-132; RM-133
RF Troubleshooting and Manual Tuning Guide
Nokia Customer Care
Issue 1
COMPANY CONFIDENTIAL
Page 7 –55
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