After Sales
Technical Documentation
RAE/RAK–1N
RF
Page 3– 5
Amendment 1 04/97
Introduction
The RF module for Responder is taken from the HD841 project with only
minor modifications in the built–in and external antenna interfaces.
Otherwise the circuitry and layout are almost completely the same as in
HD841 GSM and PCN versions.
Technical Summary
The RF module carries out all the RF functions of the transceiver. The
GSM and PCN systems use different RF modules. The mechanical size of
both modules is the same.
EMI leakage is prevented with magnesium shield B on side one and
metallised plastic shield A on side two. Shield B conducts also heat out
of the inner parts of the phone thus preventing excessive temperature
rise.
External Signals and Connections
Table 1. List of Connectors
Connector Name Code Notes Specifications / Ratings
Built–in antenna connector 5429003 SMD coaxial connector for
Whip or Helix antenna
50 / 2.0 W
External antenna connec-
tor
5420460 Includes antenna switch 50 / 2.0 W
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