FlexRadio Systems FLEX-1500 Service Manual

10 MHz
SPI BUS
FLEX-1500 TRX BOARD
XV-RX
ANT/XV-TX
To PA Band Pass Filter Bank
Bypass
1.6 - 2.3 MHz
5.2 - 7.7 MHz
7.7 - 11.4 MHz
11.4 - 17.0 MHz
25.3 - 37.6 MHz
37.6 - 54.0 MHz
LPF
MHz
AD9951
DDS
Johnson
Div by 2
LO-I
LO-Q
0 - 120 MHz
38.4 MHz
Doubler
20 MHz
Mike In
USB
Audio Out
CODEC
USB /
QSE
QSD
0 - 60 MHz
BITE
I2C BUS
Switch
Control
I2C EXPANDER
A->D
D->A
120
SPI BUS
Key In
Clocks
TLV320AIC33
TAS1020B
74LVC74D
SN65LVDS34D
2 ea. PCA9555
CVT25-38.4
SN74LVC1G04
THS4520
0.88 - 1.6 MHz
0.49 - 0.88 MHz
PTT In
LED
Version 2010 APR 05
ADL5531
4 to 1
Switch
+0 dBm TX Level
To PA
17.0 - 25.3 MHz
3.5 - 5.2 MHz
2.3 - 3.5 MHz
Level
Shift
Gate
74HCT08
26 kHz
LPF
EEPROM
FlexWire
74CBT3253
I2C
MUX
I2C BUS
System Block Diagram
Spkr/Headset
SPI
24C128
CONTROL
PTT/INT In
PTT Out
Line In/Out
I2S
I2C
BUS
PRE-AMP
BUS
-20
dB
3 to 1
Switch

FlexRadio Systems FLEX-1500 Specifications

General

Brand	FlexRadio Systems
Model	FLEX-1500
Category	Transceiver
Language	English