Elecraft KX1 Manual - Manual (Page 85)

0 . 0 2 2
C44
C45 C46
C47
6 8 4 7 0
2 2 0
Rcv Mixer
4.913 MHz
Product
and BFO
AF Amp 100uF
1 0 µ F
10uF
C53
C23
C20
X2
X5
+
+
+
Det.
C22
. 0 1
R21
2.7K
PA
C19
. 0 2 2
C17
0 . 1
C18
0 . 1
C35
1 0 0 µ F
. 0 1
C34
C43
0 . 1
Crystal Filter
1 0 µ F
C10
7-14V DC
J 1
1.4VDC @ no signal
0.6VDC @ max. signal
X3 X4
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
1 0
1 4 1 5
2 0
2 5
2 8 1
5
U1
V -
V+
1
2
3
4
5
6 7
8
U6
V -
V+
1
2
3
5
4
6 7
8
U5
BYPASS IN1
IN2
OUT GND
V+
G1 G2
1
2
3
4 5
6
7
8
U4
6V
V +
RX ANT
V +
L 1 L 2
OUT
GND
IN
U9
S 2
7 7 L 0 6
O n / O f f
Q6
Q4
NE602
C14
C3
G
D S
Q2
G
D S
Q3
. 0 1 . 0 1
C33 C32
1 8 K 1
K 2
R1
C15
. 0 1
CB
C27
1 5 0
2 0
L 7 C1
5
K1B
2
4
3
CC
5 0
L 6
CA
2 0
2 N 4 1 2 4
Q8
R19
1.8K NE602
RF Gain
K1A
7
5
6
RX ANT
K2B
7
5
6
K2A
2
4
3
C48 C49
1 0 0 0 1 0 0 0
W. Burdick
Elecraft
E.Swartz
Rev. Sht. Date By
1 of 1
LM386N
. 0 1
C9
J 3 0 9
J 3 0 9 C21
0 . 1
R25
1 0
R18
3.3M
16F876A
MCU
S3
S4
S5
6
J 3
/MUTE
/MUTE
SCK
SDO /FSYNC
C50
C51
C52
3 9
1 0 0
2 2
L 4
L 5
R17 1 K
R16 1 K
RP2
4
1 K
5
3
B G C A E DP F D
COLON
DIG1
DIG2
DIG3
1 5
1 2
1 6
DP
1 3
A
B
6
C
1
D
4
E
F
7
G
3
2
5
8
DS1
RP1
1 2 5
3 9 0
9
1 1 6
1 6 1
1 3 4
1 5 2
1 0 7
1 4 3
Low-pass Filter
V +
C2
R15
R13
2 7
1 M
KX1 Transceiver
L 8
C4
2 7
L 9
100 µH
1 8 µ H
D6
1SV149
D5
RP5 2
1
1 0 0 K
RP5 3
4
1 0 0 K
R2
Bandwidth
AGC D4
1 N 4 1 4 8
Q9 0 . 1
C8
2 N 4 1 2 4
OUTA
OUTB
INA
GND
INB
V+
NC NC
1
2
3
4 5
6
7
8
U3 TC4427
VSMTR
L 1 0
33 µH
2 2 0 µ F
C7
C16
0 . 1
1 0 K
6V
+
-
B T 1
12
J 5 P 1
12
D3 D2
Common-Cathode
3-digit LED
L 3
12
3
J 7
A T U
2 N 4 1 2 4
Q7
R28
1.8K
6T
J 2
A n t .
Q5
+
C42
. 0 1
4.7µH
6.8µH
R12
1 N 5 8 1 7
123
4
5
J 6
A u x .
C41
. 0 1
3
4
1
2
T1
R27
R11
R10
2 2
3.995 MHz
C25
X1
2 7
C24
2 7
1 0
4 7
+
R9
3 0 0
R24
2 2 K
R26
2 2
K e y / P a d d l e
6 T _ 2
6 T _ 2
1 K
5V
5V
OUT
GND
IN
U8 7 8 L 0 5
5V
C12
0 . 1
FS ADJ
/FSYNC
A Vdd
D Vdd
RESET
SLEEP
SDATA
IOUTB
COMP
DGND
MCLK
FSEL
PSEL
SCLK
SIGN
IOUT
AGND
REF
CAP
Vin
10 11
12
13
14
15
16
17
18
19
20 1
2
3
4
5
6
7
8
9
U2
DDS AD9834 R8
6.8K C31
0 . 1
C30 . 0 1
C39
0 . 1 C38
1 0 µ F
R7 R6
2 0 0
. 0 1
R5
4.7K
R3
1 K
AF Gain
6V
+
2.7V
RP3
1
2
1 0 K
4
3
RP4
8
7
1 0 K
5
6
9
1 0
SDO SCK /FSYNC
2 N 3 9 0 4
2 N 4 1 2 4 STBY GND
OUT Vcc
1 2
3 4
Z2 50 MHz
nc
TPS76427
GND
BYP
OUT EN
IN
3
2
1 4
5
U7
C37
. 0 1
*
*
*
VFWD/DATA
5
6
3 1
2
Z1 (ENC)
RP3
3
4
1 0 K
7
8
RP3
9
1 0
1 0 K
RP5
9 1 0
1 0 0 K
RP5 5 6
RP5
8 7
VBATT
B A
VSMTR
2 2 K
6.8K
R22 3 0 0
Z1-SW
. 0 1
C6 0 . 1
C5
P h o n e s / S p k r
J 4
S 1
O n / O f f
Lamp
D1
White LED
R23
4 7 0 VFWD/DATA
6V
/MUTE
nc
6V_2
R14
4 7
C11
0 . 1
6V_2
C13
5 6
3 3 0
R20
1 K
R4
1 0 0
RF Out 2SC 5739 OR 2SC2166
= On bottom of PC board.
1 2
J 8
Gnd
= Surface-mount device.
8
C55
. 0 1 D
*
** = 30-meter module connections
6T
2
1
5
Power
R29
2 2 K
C54
5 6
D7
1N4756A R30
2 2
14 MHz LPF
G
D
S
Q1
R31
1 K
J 3 0 9
2.2µH
5.6µH
5V
B
A
C
2
1
+
VBATT
C26
1 2 0
* *
* *
* *
* *
* *
47 V
nc
C56
6 8
Appendix B
4.914 MHz
R32
2 2 K
B 11/03/03
A
B
C
D
E
F
G
DP