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C107
C108
C109
C110
C111
Crystals
Checked
Semiconductors
Checked
Transistors
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Q9
Q10
Q11
IC's
IC1
IC2
IC3
IC4
IC5
IC6
IC7
IC8
IC9
IC10
IC11
IC12
DB4020 Transceptor QRP SSB doble banda 40 y 20M en kit
100n
100n SMD pre-soldered on bottom
100n SMD pre-soldered on bottom
100n SMD pre-soldered on bottom
22p
Ref.
Frequency
X1
X2
X3
X4
X5
X6
X7
X8
Ref.
Type
BD135 / C2314 / NTE295 BD135 / C2314 / NTE295
2SC1969 / 2078
SI5351 Module
DISPLAY OLED
ATMEGA328P module
Diodes
D1
D2
1N4001/7
D3
D4
D5
D6
D7
D8
D9
D10
104 or 0.1
22 or 22J
Ident./Comment Circuit section Located
4.915 MHz
4.915 or 4.91
4.915 MHz
4.915 or 4.91
4.915 MHz
4.915 or 4.91
4.915 MHz
4.915 or 4.91
4.915 MHz
4.915 or 4.91
4.915 MHz
4.915 or 4.91
4.915 MHz
4.915 or 4.91
4.915 MHz
4.915 or 4.91
Ident./Comment
P2222
2222
2SC1969 / 2078
BC547
BC547
2N7000
2N7000
2N7000
2N7000
BC547
BC547
BC547
BC547
BC547
BC547
BC557/8
BC557 or BC558
BC547
BC547
NE602
NE602 or SA602
NE602
NE602 or SA602
78L05
78L05
NE602
NE602 or SA602
NE602
NE602 or SA602
UA741
741
LM386
LM386
7809
7809
7805
7805
SI5351
1.3" display
ATMEGA329P
6V2
6.2V Zener diode
1N400 or 1N4407
1W47V
47V Zener diode
1N4148
4148
1N4148
4148
6V2
6.2V Zener diode
1N4148
4148
1N4148
4148
1N4148
4148
1N4148
4148
Arduino nano
Q-11/12
Arduino nano
(P-5)
Arduino nano
(Q-1/2)
Arduino nano
(Q-1/2)
L-8/9
TX IF xtal filter
O-4
TX IF xtal filter
O-6
TX IF xtal filter
N-6
TX IF xtal filter
N-4
RX IF xtal filter
M-8
RX IF xtal filter
M-7
RX IF xtal filter
N-7
RX IF xtal filter
N-9
Circuitsection
Pre driver
Driver
PA output TX amp
AGC
AGC
AGC
S-Meter
Mute
Band switch
Band switch
CW Mute
SSB Gen
TX Mix
AGC supply
RX Mix
SSB Dem
Audio premp
Audio Amp
Arduino supply
Arduino supply
SI5351
Display
uC processor
IC1 and IC2 supply
L-2
Output Amp bias
H-2
Output Amp
F-3
AGC
E-10/11
AGC
E-11
IC4 and IC5 supply
K-9/10
S-Meter
Q-13
S-Meter
Q-12
RIT path
O-1/2
Mute
P-5/6
Located
K-3
I-3/4
G-2
D-10
G-10
G-10
Q-14
N-12
C-13
B-13
C-12
N-3
L-5/6
G-11
L-7/8
N-10
J/K-11
L/M-13
P-10
R-9
R-8/9
R2/3
P/Q-1/5
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