Elecraft T1 ATU Owner's Manual - Manual (Page 12)

12
W. Burdick E. Swartz
Elecraft
0.45µH
Rev.
Sht.
0.05µH
0.11µH
0.22µH
Date
150
By
L1
L2 K2
L3
L4
C1
C2
C3
C4
C5
10
20
39
82
2
4
3
7
5
6
K7 K8 K15 K6 K5 K14 K13
4.0MHz
Z1
C19
1.0 µf
1 of 1
L-NETWORK SELECT
K8
2
4
3
7
5
6
C TX
K1
2
4
3
7
5
6
K3
2
4
3
7
5
6
K4
2
4
3
7
5
6
2 4
3
7 5
6
K9
2 4
3
7 5
6
K10
2 4
3
7 5
6
K11
2 4
3
7 5
6
K12
2 4
3
7 5
6
K13
C ANT
J1 T
X
J2 A
n
t.
A
B
C
D
T1
A
B
CD
T2
D2
1N5711
D1 C11 .01
C12 .01
3.3K R3
R5
R6
3.3K R4
R1
R2
51
51
3.8µH
0.95µH
1.9µH
L5 K5
L6
L7
2
4
3
7
5
6
K6
2
4
3
7
5
6
K7
2
4
3
7
5
6
330
C6
C7
330
2 4
3
7 5
6
K14
2 4
3
7 5
6
K15
MCLR OSC1 OSC2 RA4 RC0 RC1 RA0 RA1 RA2 RA3 RA5 VSS RC2 RC3
R C4 RC5 RC6 RC7 VSS VDD RB0 RB1 RB3 RB4 RB5 RB6 RB7 RB2
10 14
15 20 25 28
1 5
U
1
16F876A
MCU
B
T
1
9
V
6V
6V
T1 QRP Antenna Tuner
1 2 3 4 5 6
P
1
1 2 3 4 5 6
P
2
1 2 3 4 5 6 J4 1 2 3 4 5 6 J5
K11 K9 K4 K1 K2 K3 K10
T1CTRL-1 + -
D3
1N5817
Q1
OUT
GND
IN
U2
VFWD
VREFL
C17 0.01
78L06
S1
J3
C15 .01
C16 .01
F R
C9 .01
C8 .01
D6
G
RN
D8
RED
C18 .01
R21
D4
1N5711
PWR/TUNE
2N3906
K12
R
e
m
o
te
R10 120K
R11 24K
3.3K
D7
YEL
R9 180
R7
R14
1.5 V @ VB=9.0
9V
3.3K
120K
120K
120K
S2
BYP/INFO
R13 3.3K
/HOLD_ON
K1-K15 are single-coil latching relays, shown in the RESET position.
C5A 10
G
N
D
Po
st
E
1
C10 .001
G
/TUNE
C7A 330
C20 .01
T
A
6V
A
DATA
2-16-05
*
*
*
*
*
*
*
*
*
=
Leaded part on bottom of PC board.
=
Surface-mount part on bottom of PC board. K1-K15 are bypassed by SMD capacitors C21-C35 (not shown) at U1 pins .