6.2V RX8.5V 8.8V 13.8V

6.2V RX8.5V 8.8V 13.8V
8
7
6.2V
CB13.8V(EXT)
5
4
3
C6
47n
2
8.8V
1
2
3
4
5
6
7
8
9
10
CHANNEL
SWITCH
VR5
20K
DIMMER
COM+
P1
P2
P3
P4
P5
P6
TEST
CH19
CH9
MC
T/R
18
C5
17
AO
R1
15
R13
3K3
R3
5K6
13
GND
LED301
RO
X1
11
RI
150K
C3
10.240 MHz
IC1
LC7137A
C1
56p
C123
47p
*
CT2
20p
D17
MA150
Q20
2SC710
Q21
2SC710
C26
C19
R4
10K
C124
18p
C121
5p
82p
18p
Q25
2SC2724
D13
D3
C20
C7
47n
22p
CT1
20p
Q1
2SC2724
C23
33p
C21
15p
R15
150K
R10
2K7
C139 IS ON
BACK OF BOARD
SEE NOTE 1
C139
39p
R16
390
GND
Q5
2SC1846
C39
120p
C37
68p
C33
C25
10n
L3
GND
R17
6K8
Q4
2SC2724
C31
120p
C25
120p
C22
10n
R21
220R
C40
47n
L6
T3
10CA
006
Q3
2SC2724
C24
330p
Q2
2SC945
410
410
T4
10CP
005M
R6
4K7
C36
10p
T2
10CB
003
GND
C43
10n
GND
R9
220K
R8
12
C35
10n
GND
R12
47K
T1
10DB
003
R7
820R
560R
14
LD
10n
C4
1u
16
AI
PD
C138
47n
C8
39p
L7
C135
10n
TX8.6V
19
FIN
13.8V(EXT)
D
13.8V
20
VCC
1
CB13.8V
R2
10K
GND
RX8.5V
C231
10n
Q251
2SC1383
6
L1
27uH
R19
R18
4K7
10n
68
C44
120p
R119
270R
R20
330R
C42
C41
390p
C47
120p
Q6
2SC2078
RV5
300R
10n
C38
10n
D
L8
WHITE
L4
YELLOW
C45
180p
C46
100p
L10
C49
390p
L11
SO259
5
C50
270p
R23
47K
C48
220p
R22
100R
L5
L9
GREEN
C204
47n
C201
150p
C205
100n
C136
47n
C206
47n
R11
R91
1K
PO
GND
22K
R92
4K7
TO INDICATOR
SWITCH & DIODES
R93
2K2
C125
2n2
C126
2n2
SW2
DELTA TUNE
+
0
43
16
GND
CH9
13.8V(EXT)
PCB = PTBM134AOX
R80
39K
R203
GND
GND
OFF
32
R24
1K
37
C53
1u
C52
4n7
ROTEL RVC 240
GND
CHASSIS
RV4
10K
RF METER
D12
1N60
33
ON
1K
-
SW5
CH9
C51
2p
ATTN
SW6
GND
S/RF METER
68
N/U
1st Mixer 16.905 to 17.295 MHz
RV5
LOW POWER
10.24MhZ
L8
WHITE
Q5
64
RX SIGNAL
L4
YELLOW
T4
TX
Q17
L9
GREEN
Q6
Q16
8.8V
12.5V
Q4
Q9
IC5
NJM4558D
T8
10.7 IF
D3
Q6
Q7
Q8
Q9
Q10
RV6
ALC
1
Q11
Q12
Q13
Q14
Q15
Q1
Q19
T1
VCO
D13
RV1
SQUELCH
T9
10.7 IF
IC4
TA7205
Q16
Q17
Q18
Q19
Q20
Q18
*1
Q25
TX
Q10
TX
8.8
8.2
8.6
13.0
12.2
VCO
TX SW
TX FREQ DOUBLER
TX RF PRE-AMP
TX RF DRIVER
0
1.1
1.2
1.2
0
0.1
1.7
1.7
1.7
0.7
12.2
6.2
12.0
12.0
6.0
TX RF OUTPUT
RF AMP
1ST MIXER
1ST MIXER
2ND MIXER
1.1
0.5
0.6
0
0
1.6
1.1
1.2
0
0
11.4
12.5
3.3
3.2
0
455KhZ IF AMP
455KhZ IF AMP
AUDIO AMP
SQUELCH CONTROL
ALC CONTROL
12.5
8.8
0
0
9.1
8.0
0.7
0.7
8.6
8.6
0
0.1
8.6V REGULATOR
TX 8.6V SWITCH
ALC INHIBIT
MODULATION MUTE
LOW D TUNE SW
0
0
0
0.7
0.7
0.7
0
0
5.5
10n
R28
100R
C54
27p
Q22
Q21
Q22
Q23
Q25
Q14
Q20
T10
455 IF
D2
R31
470R
GND
D5
Q9
2SC2724
R29
2K7
C58
R30
680R
C63
R27
680R
10n
47n
10n
R40
680R
R45
47R
R33
390R
C66
10n
C69
10n
150p
T12
07LA
023N
8
8
C80
15p
2
2
C84
14
14
IC3
Q12
2SC828
C70
R38
4K7
R35
120R
R47
820R
D11
1N60
D6
1N60
R39
470R
C74
47n
C71
47n
C75
10n
C76
10n
C87
22n
1
R112
4K7
C81
47n
R49
47K
10
10
1
R44
330R
C73
47n
47n
9
9
AN240
R50
330R
R41
3K3
Q11
2SC2724
22n
12
12
C83
C86
1n
R48
100K
C85
1n
22n
C59
47n
GND
RV3
S METER
T11
07LA
023N
R37
1K
Q10
2SC2724
C82
47u
RV3
20K
S METER
R42
15K
C72
10n
CF2
455K
T8
10MA
018M
C65
R43
33K
R34
3K3
CF1
10.7M
C55
R25
680R
HIGH D TUNE SW
MIC AUDIO MUTE
RX LAMP SWITCH
VCO BUFFER
T10
07LA
004N
C68
5p
T9
MA06
47p
BEAD
C67
2p
Q8
2SC2724
C56
D4
R36
1K
Q7
2SC2724
MA150
Q13
20
C62
22p
T7
10CM
003M
R26
47K
T5
ETR
0333
Q15
Q21
C
RX8.5V
C77
5
Q8
Q3
Q2
TX
TX
TX
4.8
0
2.0
1.6
0.3
5
T2
TX
RV4
RF METER
T5
27 MHZ
EM
4.4
0
1.6
1.2
0
7
T7
27 MHZ
Q1
Q2
Q3
Q4
Q5
FUNCTION
3
4
6
RV2
DEVIATION
Q7
T3
TX
COL
7
D8
BASE
3
4
6
C
C134
3u3
R46
22K
38
T11
455 IF
IC1
LC7136
OR LC7137
1
R201
14
Q23
Q12
IC3
AN240
39
SIGNAL FOR SQUELCH CONTROL
VR3
100K
RF GAIN
39K
FM DISC
GND
1
Q11
RX AUDIO
T12
MODULATION
R14(?)
*1 Q18 INCORRECTLY MARKED AS Q11 ON BOARD
10K
B
R14(?)
CB13.8V
C140
R118
5K6
RX AUDIO
13.8V
N/U
21
R52
22
2K7
C91
10n
C88
L
H
SW4
TONE
4u7
C89
47n
R51
5K6
100u
5
1
C102
47u
2
IC4
TA7205P
10
7
1n
R73
27K
220u
8
C100
R76
470K
C105
R72
10K
9
3
R59
82R
220p
C103
IC5B
NJM4558D
5
33n
C115
C104
+
47n
33u
C95
33n
2
3
10K
R79
10K
-
RV6
500R
ALC
10n
C116
6n8
R77
470K
4n7
9
11
Q19
2SC945
R81
2K2
THERE ARE 2
LOCATIONS FOR R81
THE NORMALLY UNUSED
ONE IS NEAR THE 10.7M
CERAMIC FILTER.
R86
10R
1/2 W
Q16
2SC1318
CH1
D7
1N60
R63
18K
R69
2K7
C108
3u3
R68
1K
A
R67
15K
MORE OUTPUT POWER: CHANGE Q5 TO 2SC2314.
C112
10n
Q18
2SC945
GND
8.8V
R88
390R
RX8.5V
Q17
2SA719
TX8.6V
D9
MA150
R89
3K3
R94
10K
R5
56R
270
R84
R15K
Q15
2SA564
14
CB13.8V
150R
1W
RX8.5V
1. ON SOME BOARDS, C139 IS SOLDERED
ACROSS R18 (I.E. BASE OF Q4)
THIS CAUSES LOW POWER AND T3
NOT TO TUNE - MOVE IT TO T3.
12
C79
10u
47n
N/U
N/U
12.5V
C60
GND
R66
10K
NOTES:
2.
40
15
R87
GND
GND
R64
47R
1000u
GND
R102
R83
4K7
C119
1n8
13.8V
C110
L
IC5A
NJM4558D
C114
RV2
2K
DEV
G
C120
22n
1
+
68n
R57
560R
20
13.8V(EXT)
CB13.8V(EXT)
N/U
R78
7
PA13.8V
METER
18K
R82
6
35
PL1
FRONT PANEL
GROUND
MA150
C118
R75
10K
R74
10K
C113
*
C93
C111
2n2
C96
10n
R58
2k2
Q13
2SC1843
R65
10K
C90
4n7
4
6
C97
Q22
2SC945
VR1
50K
VOLUME
C94
R55
4K7
R56
820K
R53
4K7
19
C216
10n
C92
560p
PA
CB
SW1
POWER
8
45
C101
68n
B
SW3
ON
D14
4
N/U
GND
RX8.5V
8.8V
C99
220p
OFF
(2 OPTIONS
SHOWN)
WHEN FITTED,
C140 IS ON
BACK OF BOARD.
33u
R54
2K2
THIS CIRCUIT
VARIES FROM
CHASSIS TO
CHASSIS
6K8
R85
10K
C106
33u
C107
3u3
R70
1K
D16
MA150
RV1
20K
SQUELCH
PRESET
R61
1K8
Q14
2SC945
3
D20
MA150
VR2
10K
C210
10n
4
SPEAKER
J3
MIC
C11
C9
D8
9.1V
C10
D2
6.2V
47n
47u
10n
R95
10K
R96
270R
1/2W
46
41
L15
R103
270R
GND
13
30
1/2W
A
31
CHASSIS
FB1
4
1
3
2
PL2
NOR
C209
C207
4N7
10N
C213
4n7
N/U
VR4
5K
MIC GAIN
C206
220N
EXT SP
8
10n
R90
10K
220u
J4
CHASSIS
7
GND
2
C215
4n7
R97
4R7
1W
PA13.8V
1S1855
10n
C109
10u
SQUELCH
C122
C127
13.8 VDC
C214
4n7
C128
47u
6.2V
Q23
2SC945
L12
D10
C211
34
R62
22K
R60
10K
C98
3u3
L14
1
+
J5
P.A.
23
SW7
CLEAR
L201
PL3
RX
TX
R202
270R
GND = TRANSMIT
CB13.8V(EXT)
C208
4N7
CHASSIS
CHASSIS
GND
BY: Rick Hankinson Euro Radio Co
24
MIC AUDIO
8
7
6
5
4
3
2
Size
D
Document Number
ROTEL240.SCH
Date:
Sunday, January 20, 2013
Rev
1.2
Sheet
1
0
of
0
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement