Appendix a – Elecraft KAT100 User Manual
Page 39
W. Burdick
E. Swartz
Antenna 1
Antenna 2
L OUT
Elecraft
L IN
7 8 0 5
25LC320
4.0MHz
Rev.
Sht.
1 6 F 8 7 7
/HOLD
Date
MCLR
OSC1
OSC2
10 µF
OUT
C42
0 . 1
C43
MCU
RA4
RC0
RC1
RA0
RA1
RA2
RA3
RA5
RE0
RE1
RE2
VDD
VSS
RC2
RC3
RD0
RD1
RD2
RD3
RC4
RC5
RD4
RD5
RD6
RD7
VSS
VDD
RB0
RB1
RB2
RB3
RB4
RB5
RB6
RB7
RC6
RC7
/ C S
/ W P
VSS
SCK
VCC
SDO
SDI
B y
J 5
J 6
U8
IN
Z1
10
15
20
21
25
30
35
40
U1
U7
5V
+
1
5
1
2
3
4
5
6
7
8
(Sheet 1)
(Sheet 1)
RF IN
J 4
30pF
1 N 5 7 1 1
1 N 5 7 1 1
3.3K
C31
C32
C33
C34
1 0 0
. 0 0 1
. 0 0 1
2 0 0
1 0 0 K
R2
D1
D2
R1
R4
R3
T1
4
2
3
1
5
6
7
+
-
U5B
3
2
1
+
-
8
4
U5A
SWR Bridge
RP1
4
3
RP1
1
2
R7
1 W
3.9K
3.9K
R6
C35
. 0 0 1
8.45K
1 %
8.45K
1 %
C36
. 0 0 1
VRFDET
C39
5V
C40
0 . 1
L M 3 5 8
. 0 1
VREFL
VFWD
F T 5 0 - 4 3
FWD
REFL
EN
3
2
6
+
-
7
4
8
U6
R8
3.3K
R9
3.3K
C38
. 0 1
VRFEN
EL5146C
TP4
Ground Post
12V DC
1 N 5 8 1 7
D4
J 1
D3
P 3
1
2
+
-
Aux. 12V
C44
. 0 4 7
Q1
R 12
1 0 K
R 11
6 8 0
Q2
2 N 7 0 0 0
12V
5V
(Sheet 1)
1
2
3
4
5
6
7
8
9
J 3
Control
RFC1
C47
VRFDET
AUXBUS
1 5 µ H
. 0 0 1
C46
. 0 1
(BACK VIEW)
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
P 4
Aux Control
C45
. 0 1
KAT100 RF Board
2 of 2
5V
R5
1 2 0
AUXBUS
12V
12CTRL
K 1 7
3
1
4
K 1 8
3
1
4
C
0 . 1
C41
Aux RF In
J 2
P 6
12
Aux RF Out
J3
ANT1
ANT2
GND
GND
E 1
GND
Ant. Switch
1 0 1 1 1 2
1
2
3
4
5
6
7
8
9
P 5
W4
W3
5V
/SW
CT
/CD
Front Panel
W5
W6
C37
. 0 1
R 13
8.45K
*
RP1
5
6
3.9K
*
P 2
1
2
*
1 %
ZTX789A
1/2 watt
C49
. 0 4 7
C51
. 0 1
C50
. 0 1
VPS
VPS
/FSCL
/RSCL
R1 6
1 0 K
RFIN
P 1
1
2
FPDATA
FPCK
FPLOAD
FPLOAD
FPCK
FPDATA
IDAT
ICLK
RYLOAD
RYCK
RYDATA
/SW
VSW
IDAT
ICLK
*
= On bottom of PC board.
= Components not supplied; for future use.
AD1
AD2
1
2
3
4
5
6
J 7
AD1
CT
AD2
/CD
*
P 7
1
2
Note: All relays are shown in the N.C. position.
JUMPERS
W1-W2: Both open = Auto. LED control; W1 = DOT; W2 = BAR
. 0 4 7
C56
0 . 1
C57
0 . 1
C58
VRFEN
VFWD
VREFL
W2
W1
R 17 1 0 K
R 1 8 1 0 K
SRTEST
0 . 1
C60
/ON
Q3
2 N 7 0 0 0
RP1
7
8
3.9K
/ 8 R
/ 8 R
*
W 7
/EOT
* *
** Test output -- n/c
G
S
D
G
D
S
Appendix A
B
1/4/03
W3-W7: Leave open except as required (see manual).