Owner`s manual

0.022
C44
C45
C46
C47
68
470
220
Rcv Mixer
4.913 MHz
Product
and BFO
AF Amp
100uF
10µF
10uF
C53
C23
C20
X2
X5
+
+
+
Det.
C22
.01
R21
2.7K
PA
C19
.022
C17
0.1
C18
0.1
C35
100µF
.01
C34
C43
0.1
Crystal Filter
10µF
C10
7-14V DC
J1
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
10
14
15
20
25
281
5
U1
V-
V+
1
2
3
4
5
6
7
8
U6
V-
V+
1
2
3
5
4
6
7
8
U5
BYPASSIN1
IN2
OUT
GND
V+
G1
G2
1
2
3
45
6
7
8
U4
6V
V+
RX ANT
V+
L1
L2
OUT
GND
IN
U9
S2
77L06
On/Off
Q6
Q4
NE602
C14
C3
G
D
S
Q2
G
D
S
Q3
.01
.01
C33
C32
1
8
K1
K2
R1
C15
.01
CB
C27
150
20
L7
C1
5
K1B
2
4
3
CC
50
L6
CA
20
2N4124
Q8
R19
1.8K
NE602
RF Gain
K1A
7
5
6
RX ANT
K2B
7
5
6
K2A
2
4
3
C48
C49
1000
1000
W. Burdick
Elecraft
E.Swartz
Rev. Sht. DateBy
1 of 1
LM386N
.01
C9
J309
J309 C21
0.1
R25
10
R18
3.3M
16F876A
MCU
S3
S4
S5
6
J3
/MUTE
/MUTE
SCK
SDO
/FSYNC
C50
C51
C52
39
100
22
L4
L5
R17 1K
R16 1K
RP2
4
1K
5
3
BGCA EDPFD
COLON
DIG1
DIG2
DIG3
15
12
16
DP
13
A
B
6
C
1
D
4
E
F
7
G
3
2
5
8
DS1
RP1
12
5
390
9
116
161
13
4
15
2
10
7
14
3
Low-pass Filter
V+
C2
R15
R13
27
1M
KX1 Transceiver
L8
C4
27
L9
100 µH
18µH
D6
1SV149
D5
RP5
2
1
100K
RP5
3
4
100K
R2
Bandwidth
AGC
D4
1N4148
Q9
0.1
C8
2N4124
OUTA
OUTB
INA
GND
INB
V+
NC
NC
1
2
3
45
6
7
8
U3 TC4427
VSMTR
L10
33 µH
220µF
C7
C16
0.1
10K
6V
+
-
BT1
12
J5 P1
12
D3
D2
Common-Cathode
3-digit LED
L3
123
J7
ATU
2N4124
Q7
R28
1.8K
6T
J2
Ant.
Q5
+
C42
.01
4.7µH
6.8µH
R12
1N5817
123 4 5
J6
Aux.
C41
.01
3
4
1
2
T1
R27
R11
R10
22
3.995 MHz
C25
X1
27
C24
27
10
47
+
R9
300
R24
22K
R26
22
Key/Paddle
6T_2
6T_2
1K
5V
5V
OUT
GND
IN
U8 78L05
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
201
2
3
4
5
6
7
8
9
U2
DDS
AD9834
R8
6.8K
C31
0.1
C30 .01
C39
0.1
C38
10µF
R7R6
200
.01
R5
4.7K
R3
1K
AF Gain
6V
+
2.7V
RP3
1
2
10K
4
3
RP4
8
7
10K
5
6
9
10
SDO SCK
/FSYNC
2N3904
2N4124
STBY GND
OUTVcc
12
34
Z2 50 MHz
nc
TPS76427
GND
BYP
OUT EN
IN
3
2
14
5
U7
C37
.01
*
*
*
VFWD/DATA
5
6
31
2
Z1 (ENC)
RP3
3
4
10K
7
8
RP3
9
10
10K
RP5
910
100K
RP5
56
RP5
87
VBATT
BA
VSMTR
22K
6.8K
R22 30 0
Z1-SW
.01
C6
0.1
C5
Phones/Spkr
J4
S1
On/Off
Lamp
D1
White LED
R23
470
VFWD/DATA
6V
/MUTE
nc
6V_2
R14
47
C11
0.1
6V_2
C13
56
330
R20
1K
R4
100
RF Out
2SC5739 OR 2SC2166
= On bottom of PC board.
12
J8
Gnd
= Surface-mount device.
8
C55
.01
D
*
**
= 30-meter module connections
6T
2
1
5
Power
R29
22K
C54
56
D7
1N4756A
R30
22
14 MHz LPF
G
D
S
Q1
R31
1K
J309
2.2µH
5.6µH
5V
B
A
C
2
1
+
VBATT
C26
120
**
**
**
**
**
47 V
nc
C56
68
Appendix B
4.914 MHz
R32
22K
B
11/03/03
A
B
C
D
E
F
G
DP