Siemens A70 Service Repair Documentation

Company Confidential s Com
Copyright 2005© Siemens AG
Page 19 of 53
TD_Repair_L2.5_A70_A75_R1.0.pdf Release 1.0
6.7 Antenna switch (electrical/mechanical)
Internal/External <> Receiver/Transmitter
The A70 mobile have two antenna switches.
a) The mechanical antenna switch for the differentiation between the internal and
external antenna which is used only for RF adjustments on the board
.
b) The electrical antenna switch, for the differentiation between the receiving and
transmitting signals.
To activate the correct tx pathes of this diplexer, the EGOLDlite signals RF_FE_DTR_GSM
and RF_FE_DTR_DCS are required.
Internal/External antenna switch
to Bright
External
Internal
to / from diplexer
to EGOLD
The electrical antenna switch
From/to Antenna
from P
A
from EGOLD
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Siemens A70 Specifications

General

Brand	Siemens
Model	A70
Category	Cell Phone
Language	English