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ELECRAFT K 2 Betriebsanleitung Seite 15

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Seitenansicht 14
24
SSB Crystal Filter
Compressor
W. Burdick
E. Swartz
Modulator
Elecraft
Balanced
BUF OUT
SSM2165
4.0 MHz
Speech
VCA IN
AUXBUS
AF IN
100µH
100µH
Rev. Sht.
OUTB
COMP
RFC1
2.7K
RFC2
2.7K
Date
2.2µF
SCLK REF
OUTA
OUT
AVG
GND VDD
X1
X2 X3 X4
X5 X6 X7
CA
CP
CC CE
CH
CMCG CKCB
CD
CL
CN
RP1
T1
T2
.01
RP2
.01
.01
.01
.01
.01
.01
.01
D3
C39
C42
C14
C32
RP3
C33
470
C27
C31
MCU
/CS
DIN
VDD
GND
C20
U4
10 11 12
P1
U3
V-
V+
U5
D10
D12
D11
D13
C2
C3
P2
C5
C1
D8
D6
D7
D9
C8
C9
P3
C11
C7
By
R12
6V
Z1
6V
U2
12 3456789
5
6
7
81
2
3
4
1
2
3
4
5
6
7
8
4
123
1
2
3
4
321
+
5
6
7
81
2
3
4
3
2
1
+
-
8
4
RP3
C10
C24
2K
2K
L1
22µH
C25
22pF
C26
.01
D4
1N4148
DSB
R6
C12
2.7K
DSB
/PTT
AUXBUS
C36
C37
R5
C6
RXS
/VOX DET
MAX522
LM393
NE602
C22
.01
MOD EN
0.1
78L06
OUT
GND
C46
IN
U6
6V
0.1
22µF
0.33µF
+
.01
.01
820
.001
.01
.01
470
.01
.01
.01
+
C21
.01
4.915MHZ
MOD EN
/COMP0
/COMP1
/COMP2
RXC
RXS
K2 SSB Adapter
DAC
CF
CJ
6
5
8
7
3
4
1
2
RXS
RXS
C13
0.1
TXC
4
3
6
5
0.1
RXC
C4
0.1
39
0
27
(short)
39
100
39
39
100
39
(short)
27
0
39
8V
8V
MIC AF
C34
2.2µF
MIC AF
D2
Q1
ALC THR
R9
10K
/PTT
PN2222A
ALC
C30
820
R14
1K
R1
+
1M
TXS
R11
150
D14
TXS
Q3
Q2
PN2222A
PN2222A
RP3
2K
1
2
8T
8T
VRFDET
TXC
C41
.01
R2
5.6K
/COMP1
C18
0.1
R15
180
ALC
/ATTEN
C23
+
0.33µF
RP5
47K
6V
R10
100
C40
.01
R4
56K
C38
+
47µF
1N4007
1N4148
C43
.01
PWR CTRL
ALC THR
.01
C35
SSB
D1
R7
33K
R8
100
PWR CTRL
.01
C44
1N4007
ALC
C15
0.1
C16
.01
COMP OUT
= On bottom of PC board.
PN2222A 78L06
GND
OUT
IN
E
B
C
CLOCKWISE (8-PIN DIP SHOWN)
PIN 1 AND GOING COUNTER-
COUNT PINS STARTING AT
(DUAL-INLINE PACKAGE)
PLASTIC DIP
1
2
3
45
6
7
8
8
7
6
5
2
1
4
3
COMP OUT
5
6
7
+
-
/PTT
PTT DET
6V
CARRIER
BALANCE
C17
.01
SSB
/ATTEN
C19
.01
16
1
1
1
3
4
5
/COMP0
/COMP2
1 of 1
D6-D9 1N4007
3
1
2
D10-D14 1N4007
R16
10K
D5
1N4148
MCLR
OSC1
OSC2
RA4
RC0
RC1
RA0
RA1
RA2
RA3
RA5
VSS
RC2
RC3 RC4
RC5
RC6
RC7
VSS
VDD
RB0
RB1
RB3
RB4
RB5
RB6
RB7
RB2
10
14 15
20
25
281
5
U1
16F872
F 7-20-04
Seitenansicht 14
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