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NX-420
19
COMPONENTS DESCRIPTION
Ref No.
Part Name
Description
Q403
Transistor
Ripple Filter
Q404
FET
Switch control (Q406)
Q405
Transistor
Doubler
Q406
FET
DC switch (VCO)
Q407
Transistor
Buffer amplifi re
Q408
Transistor
RF amplifi re
Q500
FET
DC switch (SB2)
Q501
FET
Switch control (Q500)
Q502
Transistor
Switch control (Q504)
Q503
FET
DC switch (50CS)
Q504
Transistor
DC switch (50T)
Q505
Transistor
DC switch (50R)
Q506,507
FET
Level converter
Q508
Transistor
Switch control (SB1)
Q50
9
Transistor
Load
Q600
FET
DC switch (SB2)
Q
9
00
Transistor
DC switch (SB2)
Q
9
01
Transistor
Switch control (Q
9
02)
Q
9
02
Transistor
DC switch (AF AMP)
Q
9
03
FET
Switch control (AF mute)
Q
9
04
FET
AF mute switch
Q
9
05
FET
Level converter
Q
9
06
FET
AF mute switch
D100
Zener diode
Over voltage protection
D102-105
Diode
Antenna switch
D200
Diode
Limitter
D400
Diode
Limitter
D402,403
Variable capacitnce
diode
VCO frequency control
D404-407
Variable capacitnce
diode
VCO assist control
D408,40
9
Variable capacitnce
diode
TX modulation
D410
Diode
Speed up
D411,412
Diode
RF switch
D500
Diode
Receive protection (+B)
D501
Diode
Speed up
D502,503
Diode
DC/DC converter
D505
Diode
Bypass
D506
Diode
Receive current prevention
D
9
00,
9
01
Diode
Receive current prevention
Summary of Contents for NX-420 K
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