NX-200
19
TX-RX unit (X57-7360-10)
Ref. No.
Part Name
Description
IC1
IC
Temperature sensor
IC2
IC
AF AMP for VCO tune
IC3
IC
PLL IC
IC4
IC
OP AMP (VCO MOD/APC)
IC5
IC
DC AMP for TCXO MOD
IC100
IC
Auto power control
IC200,201
IC
DC AMP for BPF
IC202
IC
FM IC
IC203
IC
Buffer
IC400
IC
Voltage regulator (50C)
IC401
IC
50T control
IC402
IC
DC/DC converter
IC403
IC
Voltage regulator (33C)
IC404
IC
OP AMP (RSSI/VAGC)
Q1,2
Transistor
Buffer AMP switch
Q3
Transistor
Ripple fi lter
Q4
Transistor
Buffer AMP
Q6
Transistor
Ripple fi lter
Q7
FET
T/R switch
Q8,10
FET
VCO oscillation
Q9
FET
T/R switch
Q11
Transistor
Buffer AMP
Q12
FET
Buffer AMP
Q13
FET
Buffer AMP switch
Q100
Transistor
Buffer AMP
Q102
FET
Drive AMP
Q103
FET
Pre-fi nal AMP
Q104,105
Transistor
APC switch
Q106
FET
RF fi nal AMP
Q107,109
FET
APC switch
Q110
Transistor
APC switch
Q201
Transistor
2nd Local tripler
Ref. No.
Part Name
Description
Q202
Transistor
IF AMP
Q203
FET
Mixer
Q204
FET
RF AMP
Q401
FET
50R switch
Q402
FET
50IF switch
Q403
FET
SB3 switch
Q404
FET
DC/DC converter switch
Q405
Transistor
50T switch
Q406
Transistor
TX/RX LED switch
D1
Diode
Ripple fi lter
D2,3
Diode
fi n RF switch
D4
Diode
Bypass diode
D5,6
Diode
fi n RF switch
D7
Diode
Ripple fi lter
D8,9
D12~17
Variable
capacitance
diode
Frequency control
D18
Variable
capacitance
diode
TX modulation
D100
Diode
Local switch
D103
Zener diode
APC switch
D104,105
Diode
Antenna switch
D106
Zener diode
APC protect
D201
Diode
Local switch
D204,205,
D207,208
Variable
capacitance
diode
Vari-cap tune
D209
Diode
Antenna switch
D211
Diode
Antenna switch
D213
Diode
Reverse protection
D400
Diode
Reverse protection
D401
Diode
50T control
D402
LED
TX/RX LED
D403
Diode
Reverse protection
COMPONENTS DESCRIPTION