Motorola EP450 Service Manual

UHF 403-440 MHz PCB 8486635Z03-O Schematic Diagrams, Overlays, and Parts Lists 11-5
HKLN4216A November 24, 2003
Chapter 11 UHF 403-440 MHz PCB 8486635Z03-O Schematic Diagrams, Overlays, and Parts Lists
CONTROLLER
RX_BE
SYNTH_UHF_R1
TX_UHF_R1
VCO_UHF_R1
RX_FE_UHF_R1
UHF R1
TX_INJ
USWB
+
3V
5R
PRESC
RX_INJ
TRB
TX_INJ
VCO_MOD
V_SF
V_STEER
5R
IF_OUT RX_IN
RX_INJ
16_8_MHZ
3V5V
LOCK
MOD_IN
PRESC
SPI_CLK
SPI_DATA_OUT
SYNTH_CS
TRB
VCO_MOD
V_SF
V_STEER
5T
PWR_SET
RX_OUT
TX_ENA
USWB+
5V
5R
3V
USWB
+
5V
BW_SEL
DEMOD
IF_IN
RSSI
TX_ENA
USWB+
3V
5T
5T
5V 5R
3V
5R
5V
16_8_MHZ
3V
5R
5T
5V
BW_SEL
DEMOD
LOCK
MOD_OUT
PWR_SET
RSSI
SPI_CLK
SPI_DATA_OUT
SYNTH_CS
Figure 11-3. UHF (403-440 MHz) Radio Circuit Block Diagram

Motorola EP450 Specifications

General

Channel Capacity	16 channels
Operating Temperature	-30°C to +60°C
IP Rating	IP54
Frequency Range	VHF: 136-174 MHz, UHF: 403-470 MHz
Weight	Approximately 350g (with standard battery)