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ELECRAFT K 2 Instrucciones de operaciones Pagina 12

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Vista de pagina 11
W. Burdick
E. Swartz
Elecraft
Rev.
Sht.
Date
By
Antenna
J2
GND Post
30pF
1N5711
1N5711
3.3K
C1
C95
C87
C88
100
.001
.001
200
100K
R28
D16
D17
R29
R27
R26
T4
E1
4
3
2
1
3
2
1+
-
U5A
5
6
7
+
-
8
4
U5B
2SC2879
R35
R34
Q2
Q1
10
10
K1
K2
5
4
2
3
1
T1
4
5
2
3
1
T2
SWR Bridge
C83
C81
C80
C59
R20
R19
R39
D12
D11
RP1
2
1
RP1
4
3
D14
D13
C79
R25
C86
(SHEET 2)
N:111
RFC5
RFC4
RFC3
L16
C76
Q6
R14
R11
R21
R23
R22
300
L18
C82
LPF OUT
LPF IN
.047
470
12PA
.01
100µH
RFC1
C75
R13
100
0.1
100µH
12PA
.039
1N4007 1N4007
C71
.0018
200V
C72
.01
5R
100µH
ZVN4424
510K
Q7
R12
C31
.033
200V
C73
.01
ZVN4424
180K
5T
90-150V
100µH
5µH
1N4007
1N5404
(not used)
10
0 ohms
0 uH
1W
3.9K
3.9K
R24
C70
.001
8.45K
1%
8.45K
1%
C69
.001
VRFDET
C68
C67
.033
200V
C66
180
C64
1800
200V
C62
.047
C61
.047
C63
.047
C60
100µF
+
R9
10
2W
2W
22
3W
0.1
C58
R38
22
3W
0.1
1000
s.m.
4700
4700
1.6
2W
1.6
2W
Z = 1:16
Z = 9:1
C53
.047
C52
.047
C54
.047
C51
470µF
+
C56
.047
C55
.047
C57
.047
Z1
FB110-43
C49
.047
C48
.047
C85
.047
KPA100
1 of 2
Low-Pass Filters
Current Sense
LMC6482
3.09k, 1%
I SENSE
2N3904
U7A
100
R32
R30
1%
Q5
2
3
1
-
+
8
4
2
1
J3
12V, 20A
+
-
R7
.005 ohms
PA
5V
C89
.01
LM358
5
6
7
+
-
U7B
LMC6482
R6
R5
Q3
5B
Q4
MJE182
MJE182
15K
1K
Bias Set
D10
1N5404
0.6-0.9 V
D9
SB530
(Ext. Fuse)
12PA
("AUX 12V")
12CTRL
.01
2
1
J5
AF In
C10
0.1
R2
2.7 ohms
T SENSE
2W
2W
(jumper)
Ext. Spkr
12K2
GND
2
1
J1
K2 RF
RF IN
GND
2
1
J4
K2 12V
+
-
("AUX RF")
AF
GND
C11
0.1
R3
2.7 ohms
1W
200V
3W
25V
Q10 Q11
2N7000
SCALE
J6
1
3
2
3W
VREFL
VFWD
SP1
Int. Spkr
FT50-43
FWD REFL
C33
0.1
C30
0.1
C34
0.1
(0-5 V = approx. 0-32 A)
EN
3
2
6
+
-
7
4
8
U6
R15
3.3K
R16
3.3K
C65
.01
VRFEN
EL5146C
(2 beads)
GND
SPKR
C77
.015
200V
RFC11
100µH
*
T44-2
L15
5µH
T44-2
T-R Switch
High-pass Filter
RFC10
100µH
T4-6
T4-5
GND
*
= on bottom of PC board
TP2
Not on the PC board.
TP4
G
2/5/04
(jumper)
64
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