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Inductors/RF Transformers/Relay
Checked
DB4020 Transceptor QRP SSB doble banda 40 y 20M en kit
D11
1N4148
D12
1N4148
D13
1N4148
D14
1N4148
D15
1N4148
D16
1N4148
D17
1N4148
D18
1N4148
D19
D20
1N4148
Ref.
Value/Type
L1
100uH
L2
L3
L4
L5
L6
FT37-43
L7
100uH
L8
FT37-43
L9
T37-2
L10
T37-2
L11
T37-2
L12
T37-6
L13
T37-6
L14
T37-6
Relays
RL1
RL1a/b
RL2
RL3
RL4
RL5
RL6
RL7
RL8
4148
4148
4148
4148
4148
4148
4148
4148
BY255
BY255
4148
Ident./Comment
brown black brown
5u3H
5u3 or 5R3
5u3H
5u3 or 5R3
1u2H
1u2 or 1R2
1u2H
1u2 or 1R2
Black toroid
brown black brown
Black toroid
Red toroid
Red toroid
Red toroid
Yellow toroid
Yellow toroid
Yellow toroid
Huigang HRS2H 12V
RL2
Omron G5V-1 12V
RL3
Omron G5V-1 12V
RL4
Omron G5V-1 12V
RL5
Omron G5V-1 12V
RL6
Omron G5V-1 12V
RL7
Omron G5V-1 12V
RL8
Omron G5V-1 12V
Mute
P-13
Mute
O-12
Relay RL2
O-13
Mute
N-12
PTT path
C/D-1
Relay RL1
C/D-1
Relays 3,4, 5, 6
E-8/9
Relays 7, 8
E-8/9
Power supply protect
A-4
Arduino nano
Q-9
Circuit section
Located
Pre-driver
L-2/3
40m BPF
G-6
40m BPF
I-6
20m BPF
G-7
20m BPF
I-7
Driver output
H-3
Output amp bias
G-4
Output amp out
F-3/4
40m LPF
C-6
40m LPF
D-6
40m LPF
E-6
20m LPF
C-8
20m LPF
D-8
20m LPF
E-8
Power/ant. relay
C/D-3
Mute
N-13
Band switch
D-4
Band switch
D-8/9
Band switch
F-6
Band switch
J-5
TX / RX path
F-8
TX / RX path
J-8
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