6V

1
LOW PASS FILTER
AUDIO GAIN
MIXER
RF PRE-AMP
R19 1K
V
Add Rx/Cx mods for improved RF sensitivity
Rx 47
330pF NPO for 80m
V
C34 10uF
R16 10K
R31 2.2K
C36 0.1
C20 100
T3 Pri 2T 28 Sec 36T 28 tap 2T from gnd
U4a LM358
C21 2.2uF
T2 IF xformer
R17 100K
R18 100K
U4b LM358
U3 ADE-1
Cx .01
R21 100K
R20 100K
R14 220K
3
8
l

5
1

C22 680 NPO
3
2
7
2
C35 100pF
ANT
C15 0.1
-
C24 680 NPO
R15 10K
4
6
1, 4,5
C19 2.2uF
-
6
RFC2 (to tune for other band use)
R12 47
R11 220
Q3 2N5485
Q4 2N3565
C18 0.1
C23 .01 Mylar
C25 .01 Mylar
A
A
Jumper A (wire across board)
V (9 to 12V)
VR1 LM78L06
V
AUDIO AMP
MUTING
LOCAL OSCILLATOR
LO BUFFER
6V
l
I
O
R26 10
G
R30 100
C10 0.1
C6 0.1
C37 47uF
R27 10K
R23 1M
C30 10uF
C29 47uF
C28 0.1
l
C12 0.1
6
R13 4.7K
C32 .01
R29 27K
1
T1 10T 26 bifilar wound on FT37-43
R22 1M
Jumper C (jumper for 40m use)
C7 100
3
C31 100uF
Q1 2N2222A
Q5 2N5485
8
8
C8 0.1
R25 4.7K
C
C
U5 LM386
5
1
3
O
O
1
4
2
l
O
O
C2 22
C3 0.1
R24 10K
C27 0.1
D2 1N4148
L1 4.7uH (IF xformer)
R7 (see text)
2
O
Y1 3.58 MHz Resonator
2
U1 SA612
R28 10
4
Q2 2N2222A
R2 10K
R10 100K
AUDIO LEVEL
R9 50K
6
R3 1K
3
KEY LINE
C33 0.1
TUNE
C13
C4 220
C9 0.1
R4 100
C16 0.1
7
l
R8 (see text)
C5 220
PHONES
D1 MVAM108
New Jersey QRP Club
SOP RECEIVER
0.1uF 3.52 3.55 MHz (7.04 7.11 MHz)
supplied in kit 100pF 3.53 3.56 MHz (7.06
7.12 MHz)
Designed by J. Everhart, N2CX
rev C
4/10/2002 n2apb