ELECRAFT T1 - 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
24
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
24
3
7
5
6
C TX
K1
24
3
7
5
6
K3
24
3
7
5
6
K4
24
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
TX
J2
Ant.
A B
C D
T1
A B
C D
T2
D2
1N5711
D1
C11
.01
C12
.01
3.3K
R3
R5
R6
3.3K
R4
R1
R2
51
51
3.8µH0.95µH
1.9µH
L5
K5
L6 L7
24
3
7
5
6
K6
24
3
7
5
6
K7
24
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 RC4
RC5 RC6 RC7 VSS VDD RB0
RB1 RB3 RB4 RB5 RB6 RB7 RB2
10 14
15
20 25 281
5
U1 16F876A
MCU
BT1 9 V
6V
6V
T1 QRP Antenna Tuner
1 2 3 4 5 6
P1
1 2 3 4 5 6
P2
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 GRN
D8
RED
C18
.01
R21
D4
1N5711
PWR/TUNE
2N3906
K12
Remote
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
GND Post
E1
C10
.001
G
/TUNE
C7A
330
C20
.01
T
A
6V
DATA
*
*
*
*
*
*
*
*
*
= 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 .
B 1-15-2017