Motorola EP450 Service Manual page 132

UHF 440-470 MHz PCB 84863848Z13-C Schematic Diagrams, Overlays, and Parts Lists
Chapter 11 UHF 440-470 MHz PCB 84863848Z13-C Schematic Diagrams, Overlays, and Parts Lists
USWB+ 5V 5T 5R 3V
USWB+ 5V 5T 5R 3V
TX_ENA
PWR_SET
DEMOD
BW_SEL
CONTROLLER
RSSI
MOD_OUT
16_8_MHZ
SYNTH_CS
SPI_CLK
SPI_DATA_OUT
LOCK
HKLN4216A
UHF R2
DEMOD
RX_BE
BW_SEL
RSSI
5V 3V
5V 3V
MOD_IN
PRESC
16_8_MHZ
SYNTH_UHF_R2
V_STEER
SYNTH_CS
V_SF
SPI_CLK
VCO_MOD
SPI_DATA_OUT
TRB
LOCK
5R
5V
5R
RX_FE_UHF_R2
IF_IN IF_OUT
RX_INJ
5R 3V
5R 3V
PRESC
RX_INJ
V_STEER
VCO_UHF_R2
V_SF
VCO_MOD
TX_INJ
TRB
Figure 11-17. UHF (440-470 MHz) Radio Circuit Block Diagram
USWB+ 5T
USWB+
5T
TX_ENA
TX_UHF_R2
PWR_SET
RX_IN RX_OUT
TX_INJ
November 24, 2003
11-23