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SSB,
Jr.
ELECTRICAL CIRCUIT
AUDIO
INPUT
I2AU7GREEN
R2
3
1R3
t
/
/
PHASE SHIFT NETWORK
I
q
0B
R15
i
A'
C7
¡
I
98
G1G"
BUJE
J
1.
;O'
I
12AT7
lo;
l
Q
l
RED
R4
R5
BLUE
T2
\T
EL.:
a
/+
G2A
i'
XTAL
OR V.
F.O.
O
RED
C3
a
WH.
117(
o
Cl2
RED
RI!
18
BLUE
RED
YEL.E
'RE
1-4/
Suj
13
A.F.
BALANCE
02B
R12
2
12ÁU7
6
R14
m.C4
~
G5
~
I
C13T
*L5
TWIST
OUTPUT
RF
0
1
RFC
019
*MOUNTING
END
C18
6AG7
x
6aL4
1
4
5
G2C
YC2D
GI7
K
1
RFC
L3
Y
g
G20-
021T
G16
RFC
GI
G
014>m
G2
R16
a
G3
G15
C+,
B-
10.5
V.
-
300
V.
Fig.
2.
Circuit diagram of
the
SSB
Jr.
041110004X10
G6
-
L21,
1,80e818e081,
RFC
GI,
Circuit Constants
(All
resistors
and capacitors
*20%
tolerance
unless
specified otherwise)
C,
0.5
mf
200
volt paper
Cz
20-20-20-20 mf
450
volt electrolytic
C,, C,,
Cie, C,2, C,e
1000
mmf mica
or
ceramic
Cs,
C,,,
Cl-
250
mmf
mica
X10%
C,:
May not
be
necessary,
see
text
Ls
L,
Ls
16
turns
No.
19
enamel wire spaced
to
fill
Millen No.
69046 coil form.
Tap at
8
turns. Link of
1
turn at center.
Same as L, except no link used
28
turns
No.
19
enamel wire. Link
on
Cr
2430
mmf
(0.002
mf
mica *5%a
with
170-780
mmf trimmer in parallel)
open end
to match
load.
(4
turn
link
matches
72
ohm load.)
C,
C,
4860
mmf
(0.0043
mf
mica
5%
with
170-780
mmf trimmer
in
parallel)
1215
mmf
(0.001
mf
mica
*5%
with
50-380
mmf trimmer
in
parallel)
RFC
R,
Rº
Rs
Radio -frequency choke
0.5
millihenry
1
megohm
potentiometer
10,000
ohm,
%
watt
750
ohm,
%
watt
C,,,
607,5
mmf
(S00
mmf
mica
X10% with
9-180-
mmf trimmer
in Parallel)
R,
Rs
430
ohm,
3,1
watt
(*5%)
100
ohm
potentiometer
Cu,n
C,,
0
005
mf mica
or
ceramic
R,
1600
ohm,
A
watt
(*5%
C
C
350
mmf
600
volt
mica
X10%
(250
mmf
in
parallel with
100
mmf)
0
01
mf mica
or
ceramic
R,,
R,,
Rs,
R,
R
133,300 ohm, % watt
(*1%0
100,000 ohm, %
watt
(
1%)
510
ohm,
A
watt
(*5%)
C,,,
C2,
0
002
mf
mica
X10%
R,2
500
ohm
potentiometer
G,, 02,
0,, G,...
1N52
germanium diode
or
equivalent,
see
text
R,,
R
330
ohm,
3.4
watt
47,000 ohm,
34
watt
J
Open circuit jack
R,,,
R,,
20,000
ohm,
1
watt
L,,
L2
33
turns
No.
21
enamel wire
close wound
R,6,
R,;
1000
ohm
potentiometer
on
Millen No.
69046
iron core
adjust-
S
DPDT
toggle switch
able slug
coil
form.
Link
of
6
turns
of
hookup wire wound
on open end.
T,
Ts,
T,
Stancor
A
-53C
transformer
UTC
R
-38A
transformer
The SSB Jr.
is
a
complete single-sideband trans-
mitter-just
add microphone and
antenna
and you
are on
the
air. No longer
must amateurs
feel
that
single-sideband equipment
ís
too complex to
under
-
2
stand
or
too complicated to build. The SSB Jr,
rig
is
no more difficult
to build
or
adjust than any
modern
3
-tube
transmitter.
This
rig
should bring
SSB
within the reach of anyone
that
is
interested.
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