EA3GCY ILER-20 MK2 - Page 10

ILER-20 MK2 SSB QRP Transceiver Kit Page 10
R56
22
red-red-black
TX Driver
C-1
R57
1
brown-black-gold
TX Driver
B-1
R58
270
(BIAS) red-violet-brown
BIAS TX Out Amp
C-3/4
R59
1K
brown-black-red
TX Out Amp
A-3
R60
1
brown-black-gold
TX Out Amp
B-1/2
R61
1
brown-black-gold
TX Out Amp
A-1/2
R62
1K
brown-black-red
Bi-color LED
K-6
R63
1K
brown-black-red
Bi-color LED
L-6
R64
--
NOT USED
TX Pre-driver
G-2
R65
2K2
If Q14 = 2SC1969 red-red-red
TX Pre-driver
F-2
--
If Q14 = 2SC2078 NOT USED
TX Pre-driver
F-2
P1
1K
RX-GAIN Pot. w/shaft optional
Rx-Gain Control
A-9
P2
5K
502 or 53E trimmer
Mic preamp
F-10
P3
5K
502 or 53E trimmer
DSB gen / Rx mix
F-5
P4
10K
VOLUME pot. w/shaft 10K
Audio Amp volume
L-8/9
P5
500
501 or 52Y trimmer
“Bias” out amp
C-4
Capacitors
Checked
Ref.
Value
Ident./Comment
Circuit section
Located
C1
100n
104 or 0.1
RX input
A-8
C2
100n
104 or 0.1
RX input
A-8
C3
100n
104 or 0.1
RX att.
C-10
C4
100p
101 or 100J
BPF RX
C-9
C5
8p2
8P2 or 8.2
BPF RX
C-8
C6
100p
101 or 100J
BPF RX
C-9
C7
27p
27P or 27J
DSB gen/RX mix
E-7/8
C8
10uF
10uf 25V or 35V (elec)
Mic preamp
E-10
C9
100n
104 or 0.1
Mic preamp
E-10
C10
330p
n33 or 331
Mic preamp
E-8
C11
10uF
10uf 25V or 35V (elec)
Mic preamp
F-9
C12
100n
104 or 0.1
Mic preamp
F-8
C13
1uF
1uF 25V, 35V or 63V (elec)
DSB gen/RX mix
G-6/7
C14
100n
104 or 0.1
Carrier ctrl.
D-5
C15
100n
104 or 0.1
DSB gen/RX mix
F-6
C16
220p
n22 or 221
DSB gen/RX mix
H-6
C17
8p2
8P2 or 8.2
IF xtal filter
E-7
C18
8p2
8P2 or 8.2
IF xtal filter
E-6
C19
8p2
8P2 or 8.2
IF xtal filter
E-5
C20
8p2
8P2 or 8.2
IF xtal filter
E-4/5
C21
8p2
8P2 or 8.2
IF xtal filter
E/F-4
C22
100n
104 or 0.1
SSB dem/TX mix
E-3
C23
100n
104 or 0.1
IC2-IC3 supply
H-3
C24
100n
104 or 0.1
IC2-IC3 supply
G-5
C25
100uF
100uF 25V or 35V (elec)
C3 supply
F-4
C26
10n
103 or 0.01
IC3 supply
H-4
C27
220p
n22 or 221
SSB dem/TX mix
H-5
C28
100n
104 or 0.1
Audio AGC-preamp
G-8
C29
100n
104 or 0.1
Audio AGC-preamp
G-8
C30
100uF
100uF 25V or 35V (elec)
Audio AGC-preamp
G-9
C31
100n
104 or 0.1
Audio AGC-preamp
H-9/10
C32
100n
104 or 0.1
Audio AGC-preamp
I-9
C33
100n
104 or 0.1
Audio AGC-preamp
I/J-9
C34
1n
102 or 0.001
Audio AGC-preamp
I-8
C35
100uF
100uF 25V or 35V (elec)
Audio AGC-preamp
I/J-10
C36
220uF
220uF 25V or 35V (elec)
VCC supply
H-7
C37
10uF
10uF 25V or 35V (elec)
Audio Amp out.
J-10
C38
10uF
10uF 25V or 35V (elec)
Audio Amp out.
J-9
C39
100n
104 or 0.1
Audio Amp out.
K-8
C40
10n
103 or 0.01
Audio Amp out.
L-9/10
C41
100uF
100uF 25V or 35V (elec)
Audio Amp mute
L-7
C42
100uF
100uF 25V or 35V (elec)
Audio Amp out.
K-10
C43
100n
104 or 0.1
Audio Amp out.
K-8