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Codan Radio Communications VT-3-150-SN User Manual

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R6
POWER
27k4
2 - 8 Watts
392k
2 - 5 Watts
Power Range Selection
DE
DANIELS
ELECTRONICS
VICTORIA B.C.
DE
DANIELS 
ELECTRONICS 
4.2      VT-3/150 VHF Amplifier Schematic Diagram
            
TITLE:          VT-3/150 VHF AMPLIFIER SCHEMATIC DIAGRAM
4-3
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
J2, JU5
DWG No:       VT3AMPM2A
DWG REV DATE:     10 DECEMBER 1995
DATE:        4 MARCH 1994
FORWARD
POWER
ALARM
C39
FORWARD
OUTPUT ALARM
ADJUST
VSWR
OUTPUT ALARM
ADJUST
OVERLOAD 
ADJUST
OUTPUT 
POWER 
ADJUST
LB = LOW BAND
HB = HIGH BAND
U4
TL5, TP5
R45
Q7
L11
FB3, FIL5
D7
DWN BY:    REX WONG
BOARD REV:             1.1
BOARD No:    43-932611
APRVD:
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UNUSED REFERENCE DESIGNATORS
HIGHEST REFERENCE DESIGNATORS
VSWR
ALARM
+13.8 VDC
LOW / HIGH BAND
RF IN (1 mW)
SMB
J1
RF OUT
TYPE N JACK
J2
10k0
R9
10nF
C15
50k
R7
MBZ5233B
D1
4k53
R5
10k0
R10
10nF
C12
 D
S 
Q2
D5P06V
TL5
178R
R3
30R1
R1
49k9
R4
IN5402
D2
LPF
FIL1
AMPLIFIER ENABLE I/P
LPF
FIL2
+9.5 VDC
LPF
FIL5*
+13.8 VDC
LPF
 D
S 
IRF9540
Q1
3k48
R8
SEL
R6
BYD17J
D4
178R
R2
BYD17J
D3
1.5uH
L5
49k9
R13
150pF
C16
49k9
R12
TL1
R15
49R9
1k00
R35
49k9
R34
10nF
C26
PZT2222A
Q5
10k0
R44
50k
R36
150pF
C25
49k9
R33
1k00
R42
27k4
R43
10nF
C23
 6
 5
 8
7 
 4
MC33172
U2b
1.5uH
L7
MMBD701
D7
10k0
R11
TL2
49R9
R16
49R9
R17
49k9
R22
10k0
R20
50k
R21
49k9
R19
10nF
C21
150pF
C20
49k9
R18
1.5uH
L6
MMBD701
D6
BC817-25
Q4
10k0
R29
1k00
R25
27k4
R28
BC817-25
Q6
10k0
R41
1k00
R39
221k
R40
49k9
R27
10nF
C17
49k9
R26
49k9
R30
PZT2222A
Q3
10k0
R31
50k
R37
1k00
R38
JU1
JU4
1k00
R24
 2
 3
 1 
U3a
 2
 3
 1 
U1a
 2
 3
 1 
U2a
 6
 5
8
7 
 4
MC33172
U3b
100nF
C18
10nF
C19
100nF
C13
10nF
C14
6 
5 
 4
 7
 8
MC33172
U1b
LPF
FIL3
JU2
LPF
FIL4
JU3
100nF
C24
TL3
100nF
C11
18nF
C9
180nH
L3
18nF
C5
 +
4.7uF
C6
18nF
C4
180nH
L2
180nH
L1
150nH
L4
18nF
C2
18nF
C3
MHW 607
6
MHW607
U4
FB1
1nF
C1
MRF262
Q7
+13.8 VDC
150nH
L10
150nH
L9
C31
51pF LB/24pF HB
FB2
SELECT
C35
56pF LB/220pF HB
C38
FB3*
 +
47uF
C30
10nF
C28
100nF
C27
19nH
L8
19nH
L11
47pF LB/43pF HB
C36
47pF LB/36pF HB
C37
68pF LB/51pF HB
C33
10R
R45
MMBD701
D5
10k0
R32
TP3
TP4
TP5
TP2
TP1
1nF
C8
100nF
C7
10nF
C10
49k9
R23
10nF
C22
10k0
R14
20pF LB
C34
5.6pF LB
C32
1nF
C29
SWITCHED +9.5V
SWITCHED +9.5V
TO ALL SWITCHED +9.5V
SWITCHED +9.5V
SWITCHED +9.5V
SWITCHED +9.5V
2.2 nF
C39
 
JU5
2
4
5
1
3
OVERLOAD