Heathkit SW-717 User manual

ASSEMBLY MANUAL
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EF
Copyrighr O 1971
Heath Company
,1ll tigltt! t.tthtd
595-.1 293-04
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Assembly and
of the
SHORTWAVE
MODEL SW -717
O pe ratio n
RECEIVER
HEATH COMPANY
BENTON HARBOR. MICHIGAN 49O22

F-
TABLE OF CONTENTS
INTRODUCTION
CIRCUIT BOARD
Parts List
Step-by-Step Assembly
CHASSIS
Parts List
Step-by-Step Assembly
Chassis Parts Mounting
Subpanel Assembly
Circuit Board and Panel Mounting
Chassis Wiring
Transformer Primary Wiring
Chassis Top Assembly
Front Panel Mounting
INITIAL TESTS
ALIGNMENT
FINAL ASSEMBLY
INSTALLATION 51
OPERATION 53
IN CASE OF DIFFICULTY
Troubleshooting Chart 55
56
59
61
63
63
65
5
7
67
15
17
18
22
24
26
36
36
40
43
45
49
SPECIF ICATIONS
CIRCUIT DESCRIPTION
CHASSIS PHOTOGRAPHS
SCHEMATIC. , .(fold-outfrom page)
CIRCUIT BOARD X.RAY VIEW
RESISTANCE CHART
VOLTAGE CHART 68
WARRANTY .lnside Front Cover
CUSTOMER SERVICE Inside Rear Cover
-iIIC-ATHvCrlr@

3
INTRODUCTION
The Heathkit Model SW-717 Shortwave Receiver is designed
to receive both the standard broadcast and the short wave
bands. The receiver tunes from 550 kHz to 30 MHz in four
overlapping bands.
The Receiver features electrical bandspread for all four
bands, a relative signal strength meter, a BFO control, an
automatic noise limiter, and a headphone jack. There is also
a built-in rod antenna for the broadcast band and provisions
for connecting an external antenna for shortwave reception.
Solid -state circuitry is used throughout. Most of the
components are mounted on a printed circuit board both for
ease of assembly and for reliability. The built-in power
suppfy is transformer operated from either 120 Vac or 24O
Vac and uses four silicon diodes in a full-wave bridge circuit.
Refer to the "Kit Builderc Guide" for complete information
on unpacking, Wrts identification, tools, wiring, soldering,
and step-by-step asemb ly proced ures.
I.IEATHKITT,

CIRCUIT BOARD
PARTS LIST
Remove the bag marked Pack #1 from the shipping carton
and empty its contents on your work table' Check each part
against the following list. The numbers in the "Key No'"
column refer to the numbers in the Parts Pictorial (fold-out
from Page 1 1). To avoid intermixing parts, any part packed
in an individual envelope with a part number on it should be
placed back in its envelope after it is identified until that
part is called for in a step.
After the above parts bag has been removed from the
shipping carton, the remaining parts will be considered to be
part of the Final Pack.
To order replacement parts, refer to the "Price Each"
column and use the Parts Order Form furnished with this
kit. lf a Parts Order Form is not available, refer to the
"Reolacement Parts" inside the rear cover of the Manual'
KEY PART PARTS
No. No. Per Kit PRICE
Each DESCRIPTION
2 .15 2.7 sl, 5% (red-violet-
sotd)
1 .15 22 O (red-red-black)
4 .15 100 Q (brown-black-
brown)
1 .15 470 O (Yellow-violet-
brown)
2 .15 680 O (blue-gray-brown)
2 .15 1000 O (brown'black-
red)
2 .15 27OO Q (red-violet-red)
2 .15 3300 O (orange-orange
red)
1 .15 6800 Q {blue-gray-red)
2 .15 10 kO (brown-black-
orange)
KEY
No. PART
No. PARTS
Per Kit
2
1
2
PRICE DESCRIPTION
Each
R ES I STORS ( 1 /2-watt, l}o/o, unless otherwise marked )Resistors (cont'd.)
1 1-21 1
1 1-22
1 1-23
1 1-24
1 1-60
1 1-102
1 1-26
1 1-27
1 1-31
1 1-33
15 kO (brown-green-
orange)
22 kO (red-red-orange)
27 kO (red-violet-orange)
33 kO (orange-orange-
orangel
68 kO (blue-gray-orange)
82 kO (gray-red-orange)
100 kQ (brown-black-
yellow)
150 kO (brown-green-
yellow)
330 kA (orange-orange
yellow)
470 kO (yellow'violet-
yellow)
1 1-143
1 1-49
1 1-3
1 1-6
't 1-7
1 1-9
1 1-13
1 1-14
1 1-19
1 1-20
1
1
2
.15
.15
,15
.15
.15
.15
.15
.15
.15
.15
HE.A.THKIT'

@
KEY PART PARTS PRICE DESCRIPTION KEY PART PARTS PRICE DESCRIPTION
No. No. Per Kit Each No. No. Per Kit Each
CAPACITORS
Disc
2 21-149 1 .15 2.7 PF
2 21-60 1 .i 5 18 pF
2 21-5 1 .15 20 pF
2 21-9 2 .15 100 pF
2 21-23 2 .15 42O pF
2 21-16 3 .15 .01 uF
2 21-143 4 .30 .05 pF
2 21-95 4 .25 .1 ttF
Mica
3 2o-1 16 1 '45 4oo PF
Electrolytic*
4 25'54 3 .30 10 PF, 1 5 volts
5 25'i46 1 '70 100 PF' 30 volts
5 25-131 1 .85 25Q ttF, 25 volts
*May be marked MFD instead of ptF.
Polystyrene
6 29-5 1 .15 1000 pF
6 29-3 1 .25 27OO pF
Trimmer
7 31-54 2 .55 +-4O pF
7 3x-56 2 .45 1.5-20 pF
CONTROL
I 10-241 'r 1.00 10 kO
INDUCTORS
I 40-487 2 1'00 300 pH peaking coil
(orange-black-brown )
10 4O-1O24 t 1'00 L1 (band A oscillator)
10 40-1025 1 1.00 L2 (band B oscillator)
10 40-1026 1 1.00 L3 (band C oscillator)
10 40-1027 t 1.00 L4 (band D oscillator)
10 40-1028 1 1.00 L5 (band B antenna)
10 4O-1O29 1 1.00 L6 (band C antenna)
10 40-1030 1 1.00 L7 (band D antenna)
DIODES-FILTERS
11 56-26 1 .40 1N191 (brown-white-
brown) diode
12 56-61 1 .95 'l mA, 1.3 V stabistor
(GE STB 620)
13 404-399 3 .60 Ceramic filter
TRANSISTORS
NOTE: Transistors are marked for identification in one of
the following four ways:
1. Part number.
2. Transistor type number.
3. Part number and transistor type num-
ber.
4. Part number with a transistor type number
other than the one listed.
417-91 2 .85 2N5232A
417-224 1 1,40 MPSUOs
417-225 1 1.60 MPSUss
417-118 1 .40 2N3393
417 -169 1 1 .50 MPF 1 05
417-201 1 .50 X29A829
417-222 1 1.00 2N5308
417-240 1 2.40 40673
PARTS FROM THE FINAL PACK
85-452-3 I 2.O5 Circuit board
344-56 1 .05/ft Blue hookup wire
14 391-34 1 .15 ldentification label
1 b 490-E 1 .1 5 Nut starter
Parts Order Form
Kit Builders Guide
1 2.00 Manual (See front cover
for Part number.)
Solder (Additional 3' rolls
of solder, #331-6, can be
ordered for .25 cents each.'
597-260 1
597-308 1
The above prices apply only on purchases from the Heath
Company where shipment is to a U.S.A. destination. Add
10% (minimum 25 cents) to the price when ordering from a
Heathkit Electronic Center to cover local sales tax, postage
and handling. Outside the U.S.A. parts and service are
available from your local Heathkit source and will reflect
additional transportation, taxes, duties and rates of
exchange.

STEP.BY-STEP ASSEMBLY
Before starting to assemble this kit, read the "Kit Builders
Guide" for complete information on wiring, soldering, and
step-by-step assembly procedu res.
Use 1/2-watt resistors unless directed otherwise in a step.
Resistors are designated by the color code and the resistance
value. The symbol fl means ohms, and K or kQ indicates
1,000 ohms. Capacitors are designated by their value and
type. The symbol pF means microfarad, and pF means
picofarad. 1 pF is equal to 1,000,0O0 pF.
Before you install a disc capacitor, remove from its leads any
excess body coating material which would protrude through
the circuit board and prevent soldering the leads to the foil.
Be very careful not to cover unused holes with solder or
bridge solder between foils during the assembly of the
circuit board. Use a soldering iron that is rated at 15 to 25
watts. lts tip should be no wrder tnan 1/1 6" at its widest
dimension; a pyramid or chisel-shaped tip is best. This type
of soldering iron will make the kit easier to assemble, with
less chance of solder bridges occurring. Solder a part, or
group of parts, only when instructed to do so.

START
IDENTIFICATION
DRAWING
CONTINUE
PICTORIAL 1

r :::::::::::::
I :::::::::::::
.T :::::::::::::
I :::::::::::::
coNTTNUE I
PART.
NUMBER
IDENTIFICATION
DRAWING
START
-
PICTORIAL 2

r"n"to @
CONTINUE
PART
NUMBER IDENTIFICATION
DRAWI NG
START
PICTORIAL 3

START -
PICTORIAL 4

CIRCU IT BOARD
PARTS PICTORIAL
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PART
NUMBER
IDENTIFICATION
DRAWING
START
CONT INUE
PICTORIAL 6

START
tun"to @
IDENTIFiCATION
DRAWING
CONTINUE
+....'.H]'
'.'.'.'g"'.
PICTORIAL 7
FINISH

CHASSIS
KEY PART
No. No.
PARTS LIST
Check each of the remaining parts against the following list.
Remember to replace parts back in their individual
envelopes until required for a step. Chassis Parts Pictorial
fold-out from Page 12.
PARTS PRICE DESCRIPTION
Per Kit Each KEY PART
No. No. PARTS PRICE
Per Kit Each DESCRIPTION
RESISTORS (1/2-Watt)
41 1-45 1
A1 1-48 1
CAPACITORS
Disc 21-5 1
Electrolytic
A2 25-54 2
43 25-138 1
Other Capacitors
A5 26-88
A6 26-81
A7 31-11
CONTROLS
A8 10-320
A9 19-95
220 O {red-red-brown)
390 O (orange-white-
brown l
Transistors-D iodes ( cont'd.)
A10 57-65
A11 56-26
412 417-118
1N4002 silicon diode
1N191 (brown-white-
brown) diode
2N3393 transistor
SPST slide
3-position rotary
4-position, 2-wafer,
rotary
1/4" grommet
3/8" grommet
3/1 6" grommet
White vinyl gsket
(adhesive, 5" x 314"1
Strain relief
Nylon insert
Front panel
Cable clamp
Large plastic foot
Small plastic foot
Alignment tool
.15
.15
SWITCHES
A13 60-1
A14 63-190
A15 63-587
4 .30
2 .40
2 .44
1
1
1
A4 25-157 1 .85
2O pF
10 trtF, 15 volts
1000/1000 ptF, 25 volts,
dual section
500 pF, 15 volts
5.9 pF variable
3231356 pF dual
section variable
30/30 pF dualtrimmer
1 megohm
10 kS,, with switch
9.1 volt,25 mA, zener
diode
.15
.30
3.40
1 5.20
1 6.15
1 .95
1 1.60
1 1.60
.30
3.10
4.15
RUBBER.PLASTIC PARTS
TRANSISTORS-DIODES
A10 56-19 1 1.50
Ilg-*rl{xtt@
81 73-1
92 73-3
83 734
84 73-92
B5 75-71
86 75-167
B7 203-759
B8 207-18
89 261-17
810 26142
811 490-1
1
1
5
2
1
2
1
2
2
2
1
.15
.15
.15
.25
.15
.15
5.45
.15
.05
.10
.15
15

run"ru @
89023
343-12
344-21
344-50
344-54
344-55
344-59
345-1
347-35
TERMINAL STRIPS
c1 431-6
c2 431-11
c3 43145
D IAL PARTS-SHAFTS-BUSH I NGS
KEY PART PARTS
No. No. Per Kit
WIRE-SLEEVING
c4 100-1036
1 00-1 037
c5 258-1
c6 258-103
100-707
1 00-1 063
c7 453-211
c8 455-13
c9 463-30
c10 463-57
cl1 466-25
1
1
1
1
1
1
1
1
1
2
SHEET METAL PARTS
D1 90-520-1
D2 200-603
D3 203-778-1
D4 205-829
HARDWARE
#4 Hardware
El 250-273
E2 250-248
E3 250-382
E4 252-15
1
1
1
1
PRICE DESCRIPTION
Each
1.25 Line cord
.1Oltt Singleconductor
shielded cable
.05/ft Red stranded wire
.05/ft Black hookup wire
.05/ft Yellow hookup wire
.05/ft Green hookup wire
.05/ft White hookup wire
.10/ft Metal braid
.1Oltt Two-conductor
shielded cable
.1 5 2-lug, screw type
.15 5-lug
.15 6-lug
.60 Small metal pulley
.60 Large metal pulley
.05 Main tuning spring
.25 Bandspread tuning sPring
.15 36" dialcord
assembly
.30 17'318" dial cord
assembly
Shaft
Brass bushing
Main tuning pointer
Bandspread tuning pointer
Pulley
5.85 Cover
3.85 Chassis
1.90 Subpanel
2.4O Bottom plate
4-40 x 3/8" screw
4-4O x 112" self-tapping
screw
4-4O x 314" black nylon
screw
4-40 nut
1
1
2
.40
.20
.55
.65
.40
.05
.05
1
1
.10
" Registered Trademark, Tinnerman Company
KEY PART PARTS PRICE DESCRIPTION
No. No. Per Kit Each
#6 Hardware
F1 250-208
F2 250-162
F3 250-89
F4 250-381
F5 250-569
F6 250-365
F7 250-8
F8 250-298
F9 252-3
F 10 252-22
F 1 1 252-118
F12 254-6
F13 259-1
Other Hardware
G1 250-16
G2 250-22
G3 252-7
G4 253-10
G5 253-11
G6 254-5
G7 255-2
G8 255-3
G9 255-63
Gl0 259-10
Gll 259-24
G12 432-66
H1 40-1089
H2 54-96-24
74-29
75-90
H3 203-779-3
390-362
40't-148
407-116
H4 412-17
H5 412-58
H6 421-17
H7 434-171
H8 436-19
H9 462-140
462-159
MISCELLANEOUS
6-32 x 1/8" screw
6-32 x 112" screw
6-32 x 3/8" screw
6-32 x 318" black screw
6-32 x 3/4" black screw
#6 x 114" sheet metal
screw
Jt'6 x 318" sheet metal
screw
#6 x 3/4" self-tapping
screw
6-32 nut
#6 Speed Nut*
6-32 x 1/4" press-in nut
#6 lockwasher
#6 solder lug
8-32 x 3/1 6" setscrew
8-32 x 7/16" setscrew
Control nut
Control flat washer
E-ring washer
Control lockwasher
3/16" long spacer
3/8" long spacer
2" long spacer
Control solder lug
#8 plain solder lug
Push-on connector
Rod antenna
Power transformer
Double-adhesive tape
Gray insulating paper
Rear panel
Fuse replacement label
Loudspeaker
Meter
#53 pilot lamp
#1813 pilot lamp
.75 ampere pigtail fuse
Pilot lamp socket
Phone jack
Large knob
Small knob
1 .05
2 .O5
23 .05
4 .05
2 .15
I .05
.05
.05
.35
.05
.05
.05
.05
2
15
4
23
q
6 .05
2 .10
6 .05
5 .05
2 .O5
4 .05
7 .05
2 .05
1 .25
1 .05
1 .05
2 .15
1 1.4s
1 s.+o
1 .15
1 .15
1 .ts
1 .1s
1 4.55
1 5,00
1 .20
1 .55
1 .40
2 .20
1 .60
2 .50
4 .55

STEP-BY-STEP ASSEMBLY
The illustrations in this section of the Manual are called
Pictorials and Details, Pictorials show the overall operation
for a group of assembly steps, Details are used to illustrate a
single step. When you are directed to refer to a certain
Pictorial "for the following steps," continue using that
Pictorial until you are referred to another Pictorial for
another group of steps.
As the drawings in the Manual may be slightly distorted to
show all the parts clearly, look at the Chassis Photos (Page
67) from time to time to see the actual positions of wires
anfl components.
Lockwashers and nuts will be used with most screws when
mounting parts, unless the assembly steps state otherwise.
Consequently, the applicable steps will call out only the size
and type of hardware used. For example, the phrase "Use
6-32 x 114" hardware" means to use 6-32 x 114" scre\ /s, one
or more #6 lockwashers, and 6'32 nuts. Refer to the Details
for the proper installation of hardware. Be sure to position
each part as shown in the Pictorials. Follow the instructions
carefully, and read the entire step before performing the
operation. Solder a part or a group of parts only when
instructed.
When a step directs you to "connect" an insulated wire, first
prepare its ends by removing 114" of insulation.

( ) Bend the capacitor terminal away from the chassis side
as shown.
( ) Remove the piece of gray insulating paper, Save the
paper for use later.
6.32 NUT EEND SOLDER LUG
SIRAIGHT UP.
o
@
&
SCRTWDRIVIR
EHASSIS PARTS MOUNTING
Flefer to Fictorial 8 (fold-out from Page 25) for the
foi!owing steps.
OLDER LU
#6 S
'3t;J,i'&
()
{}
{}
{t
il
Refer to Detail 8A and install a 318" grommet in the
chassis at AM.
In a similar rnanner, install a 1/4" grommet in the side
of the chassis at 47.
Instali 3/1 6" grommets at AN, AP, AR, AX, and AY.
Temporarily push the piece of gray insulating paper
2"314" x 2-314"| into the corner of the chassis so it
touches both the chassis side and the front chassis
ap!'{in, as shown in the Pictorial.
Mount ti-ie 5.9 pF variable capacitor at G on the front
chassis apron. Use 6-32 x 3/8" screws through
grornmets AX and AY. Tighten cnly until the screw
heads are snug against the grommets, Make sure that
no part of this capacitor touches the chassis.
Detail 8B
NOTE; A plastic nut starter has been provided with this kit.
Use it to hold and start nuts on screws. See Page 3 of the
"Kit Builders Guide" for more information.
Refer to Detail 88 for the following steps.
( ) Refer to Part A of the Detail and mount a #6 solder
lug on the under side of the chassis at AF. Use a 6-32
x 318" screw and a 6-32 nut. Position the solder lug as
shown.
( ) Refer to Part B of the Detail and bend the solder lug
straight up from the chassis.
632x318
SCREW
\
5.9 pF VARIABLE
CAPACITOR
# 26-88
#6 SOLDER tUG
\
zDetail 8C

-
Pagel9
%
NOTE: To avoid damage, keep the plates of the variable
capacitors fully mmhed while you assemble the Receiver.
Refer to Detail 8C for the next three steps.
( ) Mount a #6 solder lug on the rear frame of a 5.9 pF
variable capacitor (#26-88). Use a 6-32 x 1/8" screw.
2'' SPACER
6-32 NUT
#6 SOLDER LUG #6 LOCKWASHTR
DUAL TRIMIV1ER
cAPACIT0R #31-il
()
()
Detail 8E
Refer to Detail 8E and mount the slide switch on the
rear chassis apron at Y. Use 6-32 x 3/8" screun.
Position the switch lugs toward the corner of the
chassis as shown.
#6
SOLDER LUG
6-32 x 318"
SCREW
DetailSF
Refer to Detail 8F and mount the 2-lug, screw-type
terminal strip on the outside of the rear chassis apron
at X. Use 6-32 x 3/8" hardware with a #6 solder lug
on one screw as shown, Point the solder lug toward
the center of the chassis as shown in the Pictorial.
6-)2 x 318"
SCREW
m
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Detail 8D
() Refer to Detail 8D and mount the dual trimmer
capacitor on the chassis at AH. Use a 6-32 x 318"
screw, a #6 solder lug, and a 6-32 nut at AG. Use a
6-32 x 3/8" screw, a #6 lockwasher, and the 2" long
spacer at AJ.
* *i#
.-j;:.:::E
i,..*:'.,,;
2-LUG SCREW TYPE
TERMINAL STRIP

tun"r. @
6-32 x 318"
SCRIW
FLATTIN THI
THREI
SOLDER LUGS #6 SOLDER LUG
3/r6" S PACER
Refer to Detail 8G for the following steps:
) Force 3/16" long spacers into grommets AN, AP, and
AR. The outer ends of the spacers must not protrude
beyond the grommet faces.
) Mount the dual section variable capacitor (#26-81) on
the top of the chassis. Use a 6-32 x 3/8" screw and a
#6 solder lug at each of grommets AN, AP, and AR.
Flatten the three solder lugs and position them so
their ends come together at the midpoint of the three
grommets.
IVlOUNT THE DUAL
ELECTROTYTI C CAPAC ITOR
#25-138
( ) Refer to Detail 8H and mount the dual electrolytic
capacitor on the top of the chassis at AS with the r
mark on the capicitor positioned as shown in the
Pictorial. Hold the capacitor snugly against the chassis
and use pliers to twist each of the four mounting lugs
about l/8 of a complete turn.
2-r14"
B LK
2-314"
8LK-GRN
i
TWIST MOUNTING
LUGS 1/8 TURN
Detail 8J
( ) Refer to Detail 8J and cut the leads of the power
transformer to the lengths shown. Measure from the
point where the leads leave the transformer windings.
Then remove '1 14" of insulation from the end of each
lead.
( ) lf it has not been done prwiously, twist the fine
strands of each transformer lead and melt a small
amount of solder on each lead. This will make
soldering the connections easier, and it will avoid the
possibility of "stray" strands causing a short circuit.
NOTEr The 5-lug terminal strip will be pre-wired outsideof
the chassis before it is permanently mounted. Be sure that
you position the parts and wires as shown and that you do
not obstruct access to the screw which holds the terminal
strip to the transformer.
\ 5-LUG
TERMINAL STRIP
1i..._..... ::.::i'.i
..j:.::i.:.:r.:.1:il
'""";i :
t1
Detail 8H
1"
Detail8K po-lz x t/a'
Gh s c RE\ry
5"
DUAL SECTION
VARIABLE
CAPACITOR
4 rl
2-1 1 4"
BLK-YEL
2-31 4"
BLK.RED
.Jf u u,10. ** o, n, *
3/a 2" 3" 4"