Siemens A70 - Antenna Switch (Electrical;Mechanical)

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Copyright 2005© Siemens AG
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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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