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Product Technical Specification &
Customer Design Guidelines
Functional Description
The global architecture of the WISMO228 is shown in the figure below.
Figure 1. Functional Architecture
RF Functionalities
The Radio Frequency (RF) range complies with the Phase II GSM 850/EGSM 900/DCS 1800/PCS 1900
recommendation. The frequency range for the transmit band and receive band are listed in the table
below.
Table 1.
Frequency Range for Tx and Rx
Transmit Band (Tx)
Receive Band (Rx)
GSM 850
824 to 849 MHz
869 to 894 MHz
WA_DEV_W228_PTS_002
Rev 001
Page 21 of 108
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