Service manual

5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
VCC
VCCVCC
TP1
VCC
Size
Scale
CAGE Code
DWG NO
Rev
Sheet
of
D
PYRAMID COMMUNICATIONS
Thursday, February 07, 2008
11
C
15182 Triton Lane #102
Huntington Beach CA 92649
[phone] Fax: [phone]
VHF Rev D RX ONLY
Size
Scale
CAGE Code
DWG NO
Rev
Sheet
of
D
PYRAMID COMMUNICATIONS
Thursday, February 07, 2008
11
C
15182 Triton Lane #102
Huntington Beach CA 92649
[phone] Fax: [phone]
VHF Rev D RX ONLY
Size
Scale
CAGE Code
DWG NO
Rev
Sheet
of
D
PYRAMID COMMUNICATIONS
Thursday, February 07, 2008
11
C
15182 Triton Lane #102
Huntington Beach CA 92649
[phone] Fax: [phone]
VHF Rev D RX ONLY
RF
CONN
Mod Bal
10K
Mod
T/R Shift
Out
Cont Volt
Gnd
5VDC
cw
Gnd
WB
NB
100nH
1
2
4
3
RX5V
5
22nH
120nH
33nH
6
7
82nH
VCO
1uH
C72
1uF
C72
1uF
U3
LM321
U3
LM321
1
3
4
L3
150-04J08S
L3
150-04J08S
C34
15p
C34
15p
Q12
25139
Q12
25139
C27
2p
C27
2p
C85
68p
C85
68p
C35
33p
C35
33p
L7
S-227-5008
L7
S-227-5008
L27L27
C17
12p
C17
12p
Q1
XN4210
Q1
XN4210
L9
S-227-5005
L9
S-227-5005
FL1B
45R15
FL1B
45R15
L5
150-04J08S
L5
150-04J08S
D2
HSMP3822
D2
HSMP3822
C105C105
C29
12p
C29
12p
C81
2p
C81
2p
JP2JP2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R14
220
R14
220
U5
HMC544
U5
HMC544
RF2
1
GND
2
RF1
3
B
4
O/P
5
A
6
C80
1N0
C80
1N0
C82
1p
C82
1p
C6
.01
C6
.01
L2
150-04J08S
L2
150-04J08S
R82
2K2
R82
2K2
R45
68K
R45
68K
C19
2p
C19
2p
FL2
455E
FL2
455E
R18
56K
R18
56K
R55
680
R55
680
C104C104
R49
22K
R49
22K
C87
68p
C87
68p
C43
.1
C43
.1
L4
150-04J08S
L4
150-04J08S
R51
470K
R51
470K
C75
1uF
C75
1uF
R50
220K
R50
220K
C86
10p
C86
10p
C41
.1
C41
.1
C103
0
C103
0
R27
39K
R27
39K
L11L11
C77
1uF
C77
1uF
R48
22K
R48
22K
L28L28
C40
1N0
C40
1N0
C42C42
C39
10p
C39
10p
L8
3.9uH
L8
3.9uH
C2
1N0
C2
1N0
TCXO1
12.8 MHz
TCXO1
12.8 MHz
VCC
1
MOD
2
OUT
3
GND
4
C79
1uF
C79
1uF
R25
10K
R25
10K
C1
1N0
C1
1N0
U1
MC3371D
U1
MC3371D
XTAL
1
XTAL
2
MIX OUT
3
VCC
4
LIM IN
5
DECPLE
6
DECPLE
7
QUAD
8
AUDIO
9
FILT IN
10
FILT OUT
11
SQ IN
12
MTR DRV
13
MUTE
14
GND
15
MIX IN
16
C18
68p
C18
68p
L23L23
R24
56K
R24
56K
C84
15p
C84
15p
R13
100K
R13
100K
C25
12p
C25
12p
C11C11
Q4
85633R25
Q4
85633R25
Q11
MMBFJ309
Q11
MMBFJ309
C108
100p
C108
100p
C101C101
R28
1K
R28
1K
C37
.01
C37
.01
C10
1uF
C10
1uF
C100
100p
C100
100p
R26
100
R26
100
R83
2K2
R83
2K2
C45
.01
C45
.01
FL3
455G
FL3
455G
C71
.022
C71
.022
C46
12p
C46
12p
C91
100p
C91
100p
C26
68p
C26
68p
C70
3N3
C70
3N3
C38
.1
C38
.1
C3
100p
C3
100p
X1
44.545
X1
44.545
R23
10K
R23
10K
Q2
2N4403
Q2
2N4403
C74
1uF
C74
1uF
R46
1K8
R46
1K8
C44
12p
C44
12p
R20
150
R20
150
C69
3N3
C69
3N3
U6
HMC544
U6
HMC544
RF2
1
GND
2
RF1
3
B
4
O/P
5
A
6
R56
2K2
R56
2K2
Q9
85633R25
Q9
85633R25
C14
10p
C14
10p
C83
12p
C83
12p
C78
1N0
C78
1N0
C36
5p
C36
5p
C67
.1
C67
.1
R9
47
R9
47
C32
39p
C32
39p
C12C12
R42
47
R42
47
R53
10
R53
10
C102C102
R44
39K
R44
39K
C68
1uF
C68
1uF
L10L10
C20
1p
C20
1p
R41
100K
R41
100K
L33
S-227-5008
L33
S-227-5008
FL1A
45R15
FL1A
45R15
C88
1N0
C88
1N0
U2
MC12202D
U2
MC12202D
OSCIN
1
OSC
2
VP
3
VCC
4
DO
5
GND
6
LD
7
FIN
8
CLK
9
DATA
10
LE
11
FC
12
BISW
13
FOUT
14
0P
15
0R
16
RV1RV1
R43
39K
R43
39K
L6L6
D5
MMBD914
D5
MMBD914
R54
560
R54
560
C28
1p
C28
1p
L19
43.5nH
L19
43.5nH
L1
150-04J08S
L1
150-04J08S