Nokia 2220 Servicehandbuch
RH-42
System Module
CCS Technical Documentation
Page 42
Nokia Corporation Confidential
Issue 2 09/2003
Figure 11: RF Frequency Block Plan
Due to the AMPS mode, simultaneous reception and transmission, TX and RX IF frequen-
cies are exactly 45 MHz apart. RXIF is 135.54 MHz and TXIF is 180.54 MHz. The RXIF fre-
quency is set so that it is not a multiple of either of VHF's comparison frequency (120k).
In digital mode (TDMA800), RXIF frequency is 135.54 MHz and TXIF is (180.54MHz).
cies are exactly 45 MHz apart. RXIF is 135.54 MHz and TXIF is 180.54 MHz. The RXIF fre-
quency is set so that it is not a multiple of either of VHF's comparison frequency (120k).
In digital mode (TDMA800), RXIF frequency is 135.54 MHz and TXIF is (180.54MHz).
DC Characteristics
Power Distribution Diagram
Note: The current values in the following figure are not absolute values and cannot be measured.
These values represent maximum/typical currents drawn by the corresponding RF or Taco blocks in
use, and are, therefore, dependent on the phone’s operating mode and state.
These values represent maximum/typical currents drawn by the corresponding RF or Taco blocks in
use, and are, therefore, dependent on the phone’s operating mode and state.