Hallicrafters SX-62A Training manual

GENERAL SPECIFICATIONS
Tubes ............... Fourteen plus v 0 It age
regulator and rectifier
FREQUENCY COVERAGE
Speaker Output .......... 3.2/8/500
Headset Output .......... High impedance
Antenna Input. . . . . . . . . . . For 50 to 600 ohm line
or single wire lead -in
Phono Input. . . . . . . . . .•. High impedance
External Power Connector .. Std. octal socket
Tuning Range .......... See Frequency Coverage
Intermediate Frequency
Bands 1, 2, 3, 4 . . . . ... 455 KC
Bands 5, 6 ........... 10.7 MC
Power Supply ... SX-62A 105-125V 50/60 Cycles AC
SX-62AU 105-250V 25/100 Cycles AC
Power Consumption ...... 120 Watts
BAND
1
2
3
4
5
6
FREQUENCY TYPE OF
RANGE RECEPTION
540 KC -1620 KC
AM/CW
1.62
MC -4.9
MC
AM/CW
4.9
MC -15
MC AM/CW
15 MC -32
MC
AM/CW
27 MC -56
MC AM/FM/CW
54 MC -109
MC
AM/FM/CW
The Model SX-62A/62AU is a sensitive high fidelity superheterodyne receiver covering all of the broadcast-
ing services between 540 kilocycles (KC) and 109 megacycles (MC). The receiver is capable of receiving both the
FM (Frequency Modulation) and AM (Amplitude Modulation) broadcasts transmitted in this frequency range as
shown in the FREQUENCY COVERAGE chart.
A built-in 500 kc crystal controlled calibrating oscillator and adjustable dial pointer permit accurate dial calibra-
tion on the large direct reading slide rule dial. Marker signals appear every 500 kc on the dial scale with this type
of marker oscillator; hence, dial calibration may be held to very close limits over the entire dial scale by comparison
with the marker signal.
This calibration feature of the receiver makes it possible to log the most prominent shortwave stations by
countries directly on the dial. In addition, many of the active communication channels; government, amateur, police,
aviation, etc. are logged by bars to indicate their location on the dial. World-wide reception is accomplished simply
by selecting the desired frequency band (band selector switch) and adjusting the tuning control so that the pOinter
is above the station locating dot.
The receiver selectivity is adjustable to accommodate the broad response required for high fidelity FM and AM
broadcast reception to the sharpest crystal selectivity required for code reception in the crowded channels of the
short wave bands.
The high fidelity tone compensated audio system provides four distinct tone ranges covering full range reception
for entertainment purposes as well as the restricted range required for communication work in either voice or code.
An automatic noise limiter, operated by a toggle switch, permits the operator to reduce the background noise
caused by severe electrical distrubances. Background noise is reduced in the receiver with a minimum of audio
distortion.
A RECEIVE-STANDBY switch permits receiver disabling for short standby periods without having to wait for the
tube heaters to reach operation temperature when reception is again required.
The SX-62A operates from a 105-125 volt 50/60 cycle alternating current (AC) source. A connector for operating
the receiver with external batteries or equivalent power is provided to permit operation in areas where AC current
does not exist. The universal model, the SX-62AU, permits operation from 25 to 100 cycle alternating current
sources operating at voltages ranging from 105-250 volts. The power requirements for your receiver must be
checked carefully. Read over the installation section of this book before connecting to your power source.
IMPORTANT
Your careful attention is especially invited to the installation and operating instructions. They have been provided
to insure the satisfaction you have a right to expect from a Hallicrafters "Precision Built" product. Your receiver has
an unusually high degree of sensitivity necessary to receive weak and distant stations. Careless operation of a high
sensitivity receiver may result in excess noise or background hiss. These undesirable effects can be held to a mini-
mum by careful adjustment of the sensitivity, tuning and tone controls as well as proper selection and arrangement of
the antenna.
Page 3

INSTALLATION·
UNPACKING -Check all shipping instruction tags carefully before removing them.
LOCATION -The receiver is equipped with rubber feet for table top or shelf mounting. When locating the receiver,
avoid excessively warm locations such as near radiators, hot air registers, or confined dead air spaces such as are
encountered in recessed installations.
POWER SOURCE -Two types of power sources may be used to operate the receiver. The receiver may be operated
directly from an AC source or indirectly from a battery or DC source as follows:
AC operation -The SX-62A receiver operates from a 105 to 125 volt, 50/60 cycle AC outlet. Power consumption
is approximately 120 watts. If you are in doubt or unfamiliar with the voltage and frequency rating of your utility
service, consult your local power company representative. Attempting to operate the receiver from other sources
of power than specified may involve costly repairs.
The universal model, the SX-62AU, operates on 115 V'/130 V'/150 V./220 V./250 V. 25/100 cycle AC sources.
A selector switch on the power transformer permits operation on any of the line voltages shown.
VIBRAPACK BATTERIES
B-
SWITCH
8+
270 VOLTS
SWITCH
PL
1111
11111111
6 VOLTS + +
+
"A'
"B"
F i~.
2. Wirin~ dia~rams, DC power pZu~.
928520
CAUTION -When operating the universal model, it is necessary to check, and set if necessary, the selector switch on
the power
transformer before connecting the receiver to the source of power.
Note -The receiver will not operate from an AC source unless the jumper plug is located in its BATTERY POWER
receptacle. See Fig. 3.
DC Operation -The receiver may be operated from a 6-volt DC source (storage battery or equal) and a 270-volt
DC supply in the form of liB" batteries, vibrator power pack, or motor generator set. The DC source must be
capable of supplying the following voltages and currents for optimum results.
fiB II voltage ........... .
"B" current ........... .
Heater voltage ........ .
Heater current . . . . . . . . . .
270 Volts
150
Milliamperes
6.3 Volts
5 Amperes
Total current drain, when operating entirely from a storage battery, will run approximately 15 to 20 amperes.
DC power is connected to the receiver through the octal socket located on the rear apron of the chassis. The
jumper plug normally in this socket for AC operation is replaced with a standard octal plug for DC operation.
Wire the octal plug for DC operation as shown in Fig. 2.
SPEAKER CONNECTION - A four-terminal strip, marked "COM-3.2-8.0-500" is provided at the rear of the re-
ceiver for speaker connections. Any speaker having an impedance of 3.2 or 8 ohms can be used with the receiver by
connecting one lead from the speaker to the common ground terminal marked "COM" and the other lead to the terminal
which corresponds to the speaker impedance. When using a speaker with an impedance other than 3.2 or 8 ohms, a
matching transformer should be used to insure optimum performance. The matching transformer should have a 10-
watt power rating, a 500-ohm primary impedance, and a secondary impedance to match the impedance of the speaker
being used. The transformer should be mounted on or near the speaker. Connect the primary of transformer to the
terminals marked "500" and "COM" and the secondary to the speaker voice coil. The Hallicrafters R-46 and R-46A
speakers are both designed for use with your receiver. The R-46 speaker connects to the terminals marked "500"
and "COM"; the R-46A speaker connects to the terminals marked "3.2" and "G".
Page 4

COM 3.2 8.0 IlOO
PHONO
O©O
LICENSE PLATE
th.holllc:roften CII.
CHICAGO u.s.A.
o SE:;:'L IHA- I
JUMPER PLUG
(AC OPERATION)
OR RECEPTACLE FOR
EXTERNAL DC SUPPLY.
PHONO INPUT
CONNECTOR
Fi~. 3. Rear view.
o
o
AI A~ I GND
ANTENNA TERMINAL
STRIP
92D521-A
RECORD PLAYER CONNECTION - A phono jack is provided at the rear of your receiver for attaching a record player.
(See Fig. 3.) Any record player using a crystal pickup, or a magnetic pickup with a suitable pre-amplifier, will pro-
vide satisfactory results. For phono operation, insert the pin-plug from the record player or pre-amplifier into the
phono jack, set the RECEPTION control at "PHONO", set the RECEIVE-STANDBY switch at "RECEIVE", and adjust
the VOLUME and TONE controls as desired. The remaining controls are inoperative and will have no effect on phono
operation.
ANTENNAS - The r-f input of the receiver is designed to operate from either a single-wire antenna, or a half-wave
doublet or other tuned antenna employing a 50 to 600 ohm transmission line. Antenna connections are made to a three-
terminal strip at the rear of the receiver marked "A1", "A2", and "GND".
Single-Wire Antenna. The simplest antenna and one
which
will provide satisfactory performance throughout
the entire tuning range is a conventional Single-wire
antenna. In most localities, satisfactory results can be
obtained with just the 15-foot antenna wire included with
the receiver. Simply attach one end of this wire to ter-
minal "A1", connect the jumper wire between"A2" and
"GND", and run the wire about the room in any con-
venient manner. (See Fig. 4.)
H the receiver is operated in a steel constructed
building or where receiving conditions are exceptionally
poor, an outside antenna 50 to 100 feet long may be nec-
essary. In some locations, reception may be improved
by connecting a ground wire (ordinary copper wire) from
the terminal marked "G ND" to a cold water pipe or
outside ground rod.
Half-Wave Doublet Antenna. For top performance,
especially on the shortwave and amateur bands, the use
of a half-wave doublet or other type of antenna employing
a 50
to 600 ohm transmission line is ·recommended. A
typical doublet antenna installation is shown in Fig. 5.
The doublet antenna should be cut to the proper length
for the most used frequency or band of frequencies. The
overall length in feet of a doublet antenna is determined
by the following formula:
Length in feet = 468
Frequency in megacycles
For maximum signal pickup, the doublet antenna
should be erected with its length at right angles to the
desired station.
- over -
Fi~. 4. Sin~le lIire Antenna
1-1 ~. --- L (FEET)' ----;F""'REQ;;;i;~:~N8C;;-y "(M""'C)'---- ---~·-11
NOTE
SOLOERALL
JOINTS
Ft~. 5.
INSULATOR
Doublet Antenna usin~
Twin-Lead Transmission Line
92B2~03
o
92D2~O~
Page 5

The doublet antenna may be fed with either a balanced or unbalanced transmission line. When a balanced trans-
mission line such as "twin-lead" or a twisted pair is used, the transmission line connects to terminals "AI" and "A2",
and the jumper wire between terminals "A2" and "GND" is disconnected. (See Fig. 5.) When using an unbalanced
transmission line such as coaxial cable, the inner conductor connects to terminal "AI", the outer braid connects to
terminal "A2", and the jumper wire connects between terminals "A2" and "GND". A ground wire may improve recep-
tion when using an unbalanced transmission line. By feeding the doublet antenna with a transmission line having an
impedance of 300 ohms, a broader frequency response is obtained than that possible with a 50-75 ohm line.
The doublet antenna provides optimum performance only at the frequency for which it is cut. Therefore, it may
be desirable for reception on frequencies remote from the antenna frequency to utilize the antenna as a single wire
type. This is accomplished by connecting the two transmission line leads together and connecting them to terminal
"AI". The jumper wire in this case should be connected between terminals "A2" and "GND".
In an installation where the receiver is used in conjunction with a transmitter, it may be advantageous to use the
same antenna for receiving as for transmitting. This is especially true when a directive antenna is used since the
directive effects and power gain of the transmitting antenna are the same for receiving as for transmitting. Switching
of the antenna from the transmitter to the receiver may be accomplished with a double-pole, double-throw antenna
changeover relay or knife switch connected in the antenna leads.
For further information regarding antennas, refer to the "Radio Amateur's Handbook" or the "A.R.R.L. Antenna
Book", both published by the American Radio Relay League, West Hartford, Conn., U.S.A.
OPERATION
GENERAL BROADCAST RECEPTION - Certain front panel controls have been color coded to simplify the tuning
procedure for general entertainment purposes. High fidelity reception in the standard broadcast (AM) and frequency
modulation (FM) bands may be accomplished as follows: Turn the volume control clockwise beyond the tell tale click
of the switch. This turns the receiver on as indicated by the illumination of one of the dial scales. Similarly the
receiver is turned off by turning the control counter-clockwise beyond the click of the switch. At this point the three
"bat-handle" switches may be set at "RECEIVE" and "OFF" and forgotten. To receive standard broadcast (AM)
services; set the BAND SELECTOR for the position that illuminates the 550-1620 kiiocycle scale (bottom scale), set
the RECEPTION, SELECTIVITY, TONE and SENSITIVITY controls per the red dot, and adjust the TUNING and VOL-
UME
controls in the normal manner, tuning for clearest reception as usual.
CONTROL
VOL
UME control -
RECEIVE/STANDBY
SWitch -
RECEPTION
control -
BAND SELECTOR -
TUNIN:G control -
Page 6
RADIO-TELEPHONE
This control turns the receiver on and off in addition to controlling
the volume. Turn the control clockwise to turn on the receiver or
increase volume, and counter-clockwise to reduce volume or turn
off the receiver.
Normally set at "RECEIVE". May be set at "STANDBY" to disable
the receiver for short standby periods and yet keep the tube
heaters at operating temperature for instant use.
Set at "AM" for reception of amplitude modulated stations located
in the standard broadcast band or any of the shortwave bands, or
at "FM" for reception of FM stations located in the two highest
frequency ranges (two top dial scales).
Set for position that illuminates the dial scale covering the desired
band of frequencies. Extreme left hand position of this control
illuminates. the lowest dial scale.
The tuning control sets the frequency of reception, tuning the band
of
frequencies shown on the illuminated dial scale. The frequency
of reception is shown in kilocycles (KC) on the standard broadcast
range and in megacycles (MC) on the shortwave and FM ranges.
The frequencies of the local stations are generally listed in news-
papers, AM stations in kilocycles and FM stations in megacycles.
Information on short wave stations, not identified directly from the
dial, may be obtained from published log books available at most
book stores or radio supply houses. When tuning for the station,
tune carefully for the clearest reception and obtain top perform-
ance from your receiver.
CW
Same
Same
Set at "cw"
Same
The tuning control sets
the frequency of recep-
tion, tuning the band of
frequencies shown on the
illuminated dial scale.
The frequency of recep-
tion is shown in mega-
cycles (MC) on the short-
wave bands used by code
t ran S mitt e r s. When
tuning
for the station,
tune for the pitch of the
code Signal found eaSiest
to copy. The pitch of the
code signal will usually
rnn apprOXimately 1000
cycles.

CONTROL
SELECTIVITY
control -
SENSITIVITY
control -
TONE control -
FADIO-TELEPHONE
Normally set at "NORMAL/BROAD" for high fidelity
reception in the standard broadcast and FM bands. Use
the "NORMAL/MED." or ''NORMAL/SHARP'' for the
more crowded conditions existing in most of the short-
wave ranges. Note that as the receiver is made more
selective, the background noise and interference from
nearby stations is reduced. The setting of the selecti-
vity control is generally best determined by receiving
conditions, using just enough selectivity to isolate the
desired stations. The "CRYSTAL/BROAD" position
may be used when the frequency of reception is ex-
tremely congested.
Normally set maximum clockwise. Local high powered
stations may overload the receiver, shOwing up as dis-
tortion, hence conditions may require that this control
be turned counter-clockwise to reduce the sensitivity
of the receiver accordingly.
Normally set at "HI-FI" or "BASS" for AM or FM en-
tertainment purposes. The "LOW" and "MED." posi-
tions will be found desirable when listening on the
shortwave bands.
CW
This control may be set at "NOR-
MAl/MED." OR ''NORMAl/SHARP''
for the reception of code stations
not suffering local interference.
Congested receiving conditions may
be handled by increasing selecti-
vity, switching to one of the three
crystal positions for the degree of
selectivity required. Note that in
the
crystal poSition the tuning of
the receiver changes, i.e. the de-
sired station will be very loud on
one
size of zero beat and very weak
(crystal slot) on the other side.
The receiver sensitivity must be
controlled manually for code re-
ception, hence the SENSITIVITY
control must be advanced just
enough to keep the code stations
fnom blocking the receiver.
Normally set at "LOW" or ''MED.''
for code reception.
USE OF THE CALIBRATING CRYSTAL - A built-in secondary frequency standard and adjustable dial pOinter permits
accurate frequency calibration over any portion of the receiver dial. Three degrees of dial calibration accuracy may
be had as follows:
1. General Dial Indexing -Run the dial pOinter down to the left hand end of the dial scale, turning the TUNING
knob
until the left hand dial stop is reached. Line up the dial pointer with the index line using the small
POINTER RESET knob located to the left of the dial escutcheon.
2. Average Dial Calibration -Index the dial pointer as described above. Set the CALIB. XTAL switch at "CALIB.
XTAL", RECEPTION switch at CW, and tune the receiver to zero beat with the calibrating oscillator Signal,
i.e. the pitch of the whistle or beat note will pass through zero cycles at the exact center of the marker Signal.
The oscillator Signals will be found at multiples of 500 kilocycles on the lower 5 dial scales, i.e. 1000 kc and
1500 kc; 2 me, 2.5 mc, 3 mc etc.; 5 mc, 5.5 mc, 6 mc, etc.; 15 mc, 15.5 mc, 16 mc, etc.; or'27 mc, 27.5 mc,
28 mc, etc. After setting the TUNING control for zero beat, center the dial pointer exactly on the half-mega-
cycle dial division. For best results, the receiver sensitivity must be held to a minimum while making cali-
bration adjustments.
3. Precise Dial Calibration -To obtain a precise dial calibration the procedure outlined above should be repeated
for the particular section of the dial in use rather than merely checking calibration at either end of the dial
scale. Since the calibration signals appear every 500 kc along the dial, a calibration point may ea!:iily be ob-
tained on either side of the frequency of reception at any point along the dial.
After calibrating the receiver dial with the calibrating crystal, the oscillator is switched OFF and the RE-
CEPTION switch returned to the desired setting for normal reception.
RECORD PLAYER OPERATION -With a record player connected to the receiver it is merely necessary to set the
RECEPTION control at PHONO and operate the VOLUME and TONE controls as for normal radio reception.
NOTE: The receiver will not respond if the RECEIVE/STANDBY
switch is set at "STANDBY". The setting of the remaining controls,
except those mentioned above, is immaterial as they are not in use for
record player operation.
Page 7

HEADPHONE RECEPTION - A headset jack, located at the front panel, provides for headphone reception. Insertion of
the headset plug disables the speaker. Any high impedance headset, magnetic or crystal, will work with the receiver.
SERVICE
TUBE REPLACEMENT - The types of tubes required and their relative position in the receiver are shown in the
illustration, Fig. 6. When installing a replacement tube, insert the center guide pin into the center hole of the tube
socket; rotate the tube until the key on the guide pin drops into the notch in the socket hole; and push down until the
base of the tube rests firmly on the socket. A slightly different technique must be used on the miniature tubes. They
have seven small pins which have to be lined up with the socket holes before pushing into place. Handle with care as
all tubes are considered fragile and do not tolerate much mechanical abuse.
(!)
6C4
®
6AG5
@
6AG5
Be
Be
Be @
8e
8
FUSE
6SG7 6H6 5U4G 2A,2!5CN
~C?oo
e~ ®®
®O
OD3/VRl50
92D52~-l8
Ftg. 6. Top vtew showtng locatton of tubes and dtal lamps
DIAL LAMP REPLACEMENT - Refer to Fig. 6 for the location of the dial lamps used in the receiver. To gain access
to defective lamps, open the cabinet cover, remove the light shield (four screws) and unclip the dial lamp socket by
compressing the side springs. The socket may then be brought out into the open to change the defective lamps. Re-
place all lamps with 6-8 volt Mazda No. 44 (blue bead) or equivalent.
SERVICE OR OPERATING QUESTIONS - For further details regarding operation or servicing of the receiver, contact
your dealer. Make no service shipments directly to the factory before first writing for authorization and instructions.
~he factory cannot accept responstbtltty for unauthortzed shtpments.
The Hallicrafters Co. reserves the privilege of making revisions in current production of equipment and assumes no
obligation to incorporate these revisions in earlier models.
POSITIONING CONTROL KNOBS
BAND SELECTOR ... As required by flat on shaft
SELECTIVITY ... As required by markings
VOLUME. . . . Set at 10 for full clockwise rotation
TONE ......... As required by markings
RECEPTION ....... As required by markings
SENSITIVITY~ ... Set at 10 for full clockwise rotation
Page 8

DIAL CORD RESTRINGING
1. Remove POINTER RESET knob and then remove dial escutcheon by removing two screws at each side.
2. Remove chassis from cabinet by removing top and bottom screws at each side of front panel and three screws
at rear on underside of cabinet.
3. Remove front control knobs, and toggle switch and PHONES jack mounting nuts.
4. Remove front panel from chassis by removing two screws at each side of front panel.
5. Lift dial pointer off rail and out of way to prevent damage to pointer.
6. Remove two inner screws at each side of dial that secure dial assembly to side support brackets.
7. Loosen clamp which secures dial lamp cable to chassis and then position dial assembly forward to gain access
to front of drive pulley.
Restring the tuning capacitor drive with a 45 inch
length of 30 lb. test dial cord. Tie one end of the cord to
the tension spring at poSition A and follow the string-
ing sequence A through H as shown. At position H
stretch the tension spring and tie the cord securely to
the spring. Note that the dial cord is wrapped around the
tuning drive shaft two an<1 three-quarters times for
proper traction.
Restring the dial pointer drive with a 75 inch length
of 30 lb. test dial cord. Tie one end of the cord to the
tension spring at position 1 and follow the stringing
sequence 1 through 11 as illustrated. At pOSition 11
stretch the tension spring and tie the cord securely.
.am: RESTRING WITH TUNING
CAPACITOR FULLY MESHED.
92Cl~Bl-A
Index the dial pointer by setting the tuning gang at
maximum capacity, the RESET control in the middle of
its range, and aligning the pointer with the left hand dial
index marker.
Fi~. 7. Dial cable strin~tn~ procedure
ALIGNMENT PROCEDURE
IF ALiGNMENl'l455 KC)- Set the controls as follows:
BAND
SELECTOR .....•.. 550/1620 kc range
RECEIVE/STANDBY switch .. RECEIVE
CALIB. XTAL
switch ...... OFF
NOISE LIMITER switch. . . . . OFF
VOLUME control ......... Near Maximum
RECEPTION control. AM
SELECTIVITY control. . NORMAL/SHARP
SENSITIVITY control. . Near Maximum
Set tuning dial pointer at approximately 1,000.kc.
Connect high side of signal generator through an 0.1 mfd. capacitor to pin #1, of the 7F8 converter tube. With signal
generator set at approximately 455 kc align slugs S-1 3, 5, 10, 12 and 14 for maximum output.
Set RECEPTION control at CW and adjust slug S-8 for a 1,000 cycle note.
Set the SELECTIVITY control at CRYSTAL/BROAD. While slowly turning slug S-10 in one direction across the
resonant setting obtained above, "rock" the signal generator tuning and observe the dip in the output meter reading as
the adjustment passes through the response of the crystal filter. The correct setting of the slug S-10 is in the center
of the observed. dip. Set the signal generator at the weaker of the two responses obtained on either side of zero beat
and adjust the crystal phasing trimmer C -57 for the null.
Set the SELECTIVITY control at CRYSTAL/SHARP and with trimmer C-61 set near minimum capacity, slowly in-
crease its capacity while "rocking" the signal generator and adjust for maximum output. It may be necessary at this
point to reduce the signal generator input and the receiver sensitivity to prevent overloading. After peaking the adjust-
ment turn the trimmer in until a drop in output of about 2 db occurs. At this point the sharp crystal will have very
good selectivity without sacrifiCing too much gain.
Tune the signal generator to exact crystal frequency and note output meter reading. Set the SELECTIVITY control
at CRYSTAL/BROAD and note the drop in output, and output meter reading. Now switch to CRYSTAL/MEDIUM and
with trimmer C-60 near minimum capacity. slowly increase its capacity, while "rocking" the signal generator, until the
output meter indicates about midway between the output readings obtained in sharp crystal and broad crystal position.
Set the SELECTIVITY control at CRYSTAL/SHARP and reset signal generator for the exact crystal frequency.
Switch to NORMAL/SHARP and reset slugs 8-1,3,5 12,14 and trimmer C-58 for maximum output.
Set the RECEPTION controi at CW and adjust the BFO slug S-8 for zero beat.
IF ALIGNMENT (10.7 MC) - Set the controls as follows:
BAND SELECTOR. . . . . .. 27/56 mc range
RECEIVE/STANDBY switch .. RECEIVE
CALIB. XTAL switch ...... OFF
NOISE LIMITER switch ..... OFF
VOLUME .............. Near Maximum
RECEPTION control. . AM
SELECTIVITY control. NORMAL/SHARP
SENSITIVITY control . Near Maximum
Set tuning dial pointer at approx. midscale.
Connect the high side of the signal generator through an 0.1 mfd. capacitor to pin #1 of the 7F8 converter tube. Set
signal generator at 10.7 mc and adjust slugs S-4,6.9,13 and 15 for maximum output. Now set slugs S-2 and S-l1 for
maximum output but do not readjust slugs S-4 6.9, 13 and 15.
Set RECEPTION control at CW and adj3J.st slugs S-17 for zero beat.
Page 9

Set RECEPTION control at FM and adjust slug S-16 for maximum output. Now set Slug S-7 for the null or minimum
output as indicated on the output meter. Check the discriminator by slowly tuning the signal generator through 10.7 mc
and observe the two maximum audio level readings on the output meter. If the two peaks are equal the job is done; if
not
it may be necessary to reset Slug S-16 until a reasonable balance is obtained.
RF ALIGNMENT
After completing the alignment of the IF amplifier stages the RF amplifier stages may be aligned according to the
following chart. Connect the high side of the signal gen e rator to terminal A-I through th e dummy antenna specified
and connect a jumper between antenna terminal A -2 and GND. Use just enough signal generator output to obtain a 500
miUiwatt audio output level for best results.
ALIGNMENT CHART
Dummy
Antenna
RMA
RMA
RMA
RMA
300-ohm non-
inductive
resistor
300-ohm non-
inductive
resistor
Signal
Generator
Frequency
1500 ke
600 kc
4.0 me
1.8 me
14.0 me
7.0 mc
28 me
18 me
50 me
30 me
105 me
60 me
Band
Selector
Range
550-1600 kc
1.62-4.9 me
4.9-15 mc
15-32 me
27-56 mc
54-109 me
* Note - Calibration adjustment.
Radio
Dial
Setting
Adjust
Remarks
1500 kc C-47*, 6, 21 , 35
Adjust for max. output
600 ke S-36*
4.0 me C -45*, 20,34
Adjust for max. output
1.8 me
S-35*
14.0 me
C-43* , 4, 19, 33
Adjust for max. output
7.0 mc
S-34* , 22, 26, 30
28 me C-42*, 3, 18, 32
Adjust for max. output
18 me
S-33* , 21, 25,29
50 me
C-41* , 2, 17, 31
Adjust for max. output
30 me
S-32* , 20, 24 , 28
105 me
C-40* , 1, 16, 30
Adjust for max. output
60 mc
S-31* , 19, 23 , 27
Note -
The standard RMA dummy antenna mention in the alignment chart consists of a 200 mmf condenser in
series with a 20 uh r-f choke which is shunted by a 400 mmf condenser in series with a 400 ohm carbon
resistor.
Page 10
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e
e
(0
(0
(0
o
G
G
Fig. 8. Alignment adjustments. bottom view
Fig. 9. Alignment adjustments. top view

•
Fi . ~. 10 Al U!nment adju'ltments . left side vie' "
V13- __ _
Vs
T30
TS2
V6 l2 V9
Va V7
T
26
V16
F! g .
11 Componen t 7. oca t i on s. view
C1 R3 C
12
C16 R14 C22
T6
Ji'i~. 1:d (;ompone tlt Locati o ns, left side vtew.
C120 R104
\
.\
nX544-B
I
I
Page 11

Fig. 13. C omponent l o cat io ns, bot t om vi ew
R85
RS3
34
114C
1l
5
1
R42C
75 C90
92X5~5-A

V-IO
*-"RECEPTION" AT "cw"
I. SOCKET VIEWS ARE BOTTOM VIEWS.
2.ALL VOLTAGES MEASURED BETWEEN TuaE SOCI(ET TERMINALS AND GROUND,
3. LINE VOLTAGE- 117 V. AC.
4. ALL VOLTAGES SHOWN ARE DC UNLESS OTHERWISE SPECIFIED,
5. VOLTAGES SHOWN WERE MEASURED WITH A 20,000 OHM/VOLT METER.
6. "HC·- NO CONNECTION.
1. c:::J THE BLANK SPACES ARE PROVIDED FOR THE SERVICEMAN.
FILL IN THE ACTUAL READING AS TAKEN WITH YOUR OWN EQUIPMENT.
A NORMAL OPERATING RADIO SHOULD BE USED FOR THESE MEASUREMENTS_
Ftg. 14
x- CALIB. XTAL. ON
WITH"BANDSELECTOR" AT
BANDS COVERING
4.9MC - I09MC.
"-1
130
1
'It- LI _13--,-_-,
v-a
V-4
FRONT PANEL
~ (CONT.)
8, CONTRa. SETTING-UNLESS SPECIFIED.
tlSAND SELECTOR" AT SAND 1.
"RECEPTION" AT ·AM",
·CALIB. XTAL" AT ·Off!'
"NOISE LIMITER" AT "OFF:
"RECEIVE- STANDBY· AT ·RECE1VE~
·SENSITIVITY" AT MAXIMUM GAIN.
·SELECTIVITY· AT "NORMAL. / BOARD",
Tube socket voltage chart
NOTE:-
WITH "BANDSELEt'jOR" FOA
.~~~~p,.rg~!? A~~~~ AND
.. -ISS I
@-140 I
NOTE:-
WITH "BANDSELECTOR· FOR
27MC - 56MC BAND, AND
"RECEPTION" AT ·FM~
~- I LO I I
D -1155'1 I
.-~J
92D5~6-A

SERVICE PARTS
LIST
Schematic Hall1crafters
Schematic
Hallicrafters
Schematic
Hallicrafters
Symbol
Description Part Number
Symbol Description
Part Number
Symbol
Description
Part Number
'RESISTORS TRANSFORMERS AND COILS CAPACITORS
Rl,lC,51
Tl Transformer, antenna s~e;
.051-2.0.0829 Cl,2,16,17,3C,31
. 1CCK ohms 2.0% 451-253104 band 6 Trimmers, adjustable; 2 section; .044-2.0.0165
R2 12 ohms 451-25212.0 T2 Transformer, antenna stage; .051-2.0.0828 antenna, RF amp, and
mixer
R3,15
band 5
stages
15.0 ohms
451-252151 T3 Transformer, anterma stage; .051-2.0.099.0
C3,4,6,18,19,2.0,21,32,33,34,35
R4,54
band 4
Part of transformers T3,4,5,8,
----------
47K ohms, 1 watt 451-352473 T4 Transformer, antenna stage; .051-2.0.0826 9,1.0,11,14,15,16
and 17
R5,9,14,19,9D,l.o3,104
band 3
respectively
15 ohms 2.0% 451-25215.0 T5 Transformer, antenna stage; .051-2.0.0823 C5,129,13D
R6,13,17,2D
band 1 2.2
mmf. 5DDV., bakelite .047-1.0.016.0-.04
2.2K ohms 20% 451-253222 T6 Transformer, RF stage; band 6 .051-2.0.0633 C7,79
R7
,18,4.0,67,74,78
T7 Transformer, RF stage; band 5 .051-2.0.0832 5
mmf. 5.oCV., ceramic
491-.0.02.05.0-95
1.2K ohms 451-252122
T8 Transformer, RF stage; band 4 .051-2.0.0989 C8,11,25
R8,43,lC9
T9 Transformer, RF stage; band 3 .051-2.0.0987 •
.047 mfd. 2.o.oV., molded tubular
499-.014473
!iii
47.oK ohms 20% 451-253474
TIC
Transformar, antenna stage; .051-2.0.0825 C9 CapaCitor,
main tuning 048-3.0.02.04
Variable; Sensitivity Control
.025-1.0.0548
band 2 C13,15,27,29,5.0,59,63,74,86,87,91,
R16,22,32,45,86,1C6,l1.o
Tll Transformer, RF stage; band 1 .051-2.0.0824 1.09,112,132
1K ohm 2.0% 451-253102 T12 TransformerJ mixer stage; .051-2.0.0833 .
.022 mfd. 6D.oV., molded tubnlar 499-.031223
R21,l.o7
band 6 C14,28
2.2
megohms
451-252225 T13 Transformer, mixer stage; .051-2.0.0844
56.0.0 mm1. 5DCV., mica 47.0-514562
R23 47 ohms 20%
451-25347.0
band 5 C22,123
R24
33 ohms 20% 451-25333.0 T14 Transformer, mixer stage; .051-2.0.0989 15
mmf. 5CCV., ceramic
491-.0.0615.0-95
R25,75
band 4 C23,62,7C,84
lCK
ohms
451-2521.03 T15 Transformer, mixer stage; .051-2.0.0988 .047 mfd.
2CCV., molded tubnlar
499-.011473
R26 5.6K
ohms, 1 watt 451-352562
band 3 C24 .22 mfd.
2CDV., molded tubular 499-.011224
R27 47.0 ohms 2.0%
451-253471
T16
Transformer, mixer stage; .051-2.0.0986 C36,76,78,12.0
R28 68K
ohms, 1 ,watt 451-352683
band 2 7
mmf. 5CCV., ceramic
491-.0.06.07.0-95
R29 12.0 ohms
451-252121 T17 Transformer, mixer stage; .051-2.0.0985 C37,97
R3C,42,52
band 1 47
mmf. 5CCV., mica
47.0-21347.0
1 megohm 20%
451-2531.05
TIS Transformer, oscillator stage; .051-2.0.0839 C12,26,38,75,81,92,1.06,114,115,117,
R31,6.o
band 6 121,122,131,133,134,135
33.0 ohms
451-252331 T19
Transformer, oscillator stage; .051-2.0.0838 •
.01 mfd. 6CCV., molded tubular
499-.0311.03
R36 1.2 megohms
451-252125 band 5 C39,49
R37
1CCK ohms, 1 watt
451-3521.04 T2C
Transformer, oscillator stage; .051-2.0.0991
11.0 mmf. 5CDV., ceramic
491-.025111-95
R38 27.0 ohms
451-252271 band 4 C4C,41,57
R39,5,9,87 T21 Transformer, oscillator stage; .051-2.0.0836
Trimmer, adjustable; oscillator
.044-1.0.0.078
56K ohms 451-252563
band 3
section bands 5 and 6; crystal
R41,49,58,79,8.0,61,83 T22
Transformer, oscillator stage; .051-2.0.0835
phasing
22DK ohms
451-252224
band 2 C42
Trimmer, adjustable; oscillator
044-1.0.0347
R44 4.7 megohms
451-252475 T23 Transformer, oscillator stage; .051-2.0.0834
section, band 4
R46,47
band 1 C43,45
27K
ohms, 2 watts
451-552273
T24 Transformer, 1st IF amp. stage .05.0-3.0.0198
Trimmer, adjustable; oscillator
044-1.0.0.077
R5C 68.0 ohms
451-252681 T25
Transformer, 2nd IF amp. stage .05.0-3.0019.0
section, bands 2 and 3
R53
82CK ohms
451-252824 T26
Transformer, 3 rd IF amp. stage .05.0-3.0.0373
C44 47.0.0 mmf. 2%, 5CDV., silver
47.0-521472
R55 lCK ohms, 1 watt
451-3521.03 T27 Transformer,
FM detector .05.0-3.0.0191
mica
R56,57,71,94 T28
Transformer, BFO .05.0-3.0.0655
C46 150.0 mmf. 2%, 5CCV., silver
47.0-421152
47K ohms
451-252473
T29 Transformer. audio output .055-3.0.0213
mica
R65 15CK ohms
451-252154 T3C Transformer, power; 115V. 052-3.0.0141 C47 Trimmer, adjustable;
oscillator
044-100.076
R66 1.5 megohms
451-252155 5.0/6.0 cycles (Model SX-62A)
section band 1
R68 5.1K
ohms, 5%
451-251512
T3D
Transformer, power; 115/23.0 V. .052-3.0.0131
C48 47.0 mmf. 2%, 5CCV., silver mica
47.0-231471
R73
Variable; Volume Control .025-100549 25/6.0 cycles (Model SX-62AU) C51
22.0 mmf. 2%, 5DDV., silver mica 47.0-341221
R76,92 Ll RF choke (coded red) .053-2.0.0.0.08
C52,66,71,99,1.08,118,137
56 ohms
451-25256.0 L2 IF coupling coil .053-2.0.01.04
• .047 mfd. 6CCV., molded tubular 499-.031473
R77 1K ohm, 2 watts
451-5521.02 L3 Choke,
filter .056-2.0.0.067
C58,6C,61
R82 8.2K ohms
451-252822 L4
RF choke; filament .053-1.0.0.0.09
Trimmer, adjustable; crystal
044-2.0.0164
R84 22.0 ohms, 2 watts
451"552221
L5,6 RF choke; screen (wound on .053-1.0.0117
phasing
R85 2K
ohms, 5%, 1.0 watts; WW
453-.0612.02 R95 & R96) C89,9C
R88 2.2 megohms 2.0%
451-253225 L7
RF choke; plate
.053-1.0.0139
16.0 mmf. 5CCV., mica
470-213181
R89 68K
ohms
451-252683 C96
56.0 mmf. 5DCV., mica 47.0-313561
R91,93
C1C7 1.0 mfd. 25V., electrolytic
045-1.0.0121
4.7K ohms 451-252472
CllC 68.0 mmf. 5CDV., mica 47.0-313681
R1C1,lC2 C111,113,116
33.0 ohms 2.0% 451-253331
2.0 mfd. 25V., 3.0-2.0 mfd. 45CV.
.045-1.0.0.041
RIC5 1.0.0 ohms 451-2521.01
electrolytic
RIC8 6.8 ohms, 1 watt
451-352.068 MISCELLANEOUS C127
1.0.0 mfd. 25V., electrolytic
045-1.0.0116
Clip, dial scale & window mtg.
.076-10.04.03
*All Resistors are 1.0%, 1/2 watt, carbon type un-
Xl
Crystal, 455 KC 019-1.0.0123
less otherwise noted. X2
Crystal, calibration; 5CCKC
.019-1.01211 SWITCHES
Dial cord (specify length) .063-1.00.026
Dial pointer .082-3.0.03.01 SWl
Switch, BAND SELECTOR .06.0-4.0.0329
Dial scale (calibrated)
.022-4.0.0215
SW2 SWitch, SELECTIVITY .060-10.0234
TUBES
AND LAMPS
Escutcheon .0.07-4.0.0.078 SW3
Switch, RECEPTION .06.0-2.0.033.0
Flywheel, dial drive
.071-1.0.0178
SW4 Switch, TONE .06.0-3.0.0236
V1,2 Type 6AG5,
1st and 2nd RF amp- .09.0-9.0.0791
Fl Fuse, 2 amp. 25DV; type 3AG .039-1.00428 SW5,6,7
lifiers Fuse holder
.0.06-1.0.0451
Switch, toggle; SPST
.06.0-1.0.0138
, V3 Type
7F8, oscillator/mixer
.09.0-9.01145
Knob, BAND SELECTOR OR .015-.0.01593 SW8 Switch, power (part of volume
----------
V4 Type 6SK7, 1st IF amplifier
.09.0-9.01233
TUNlNG
control R73)
V5 Type 6SG7, 2nd
IF amplifier .09.0-9.01181
Knob, POINTER RESET .015-.0.016.09
V6,9 Type 6H6,
noise limiter & .09.0-9.0.0847
Knob, RECEPTION, .015-.0.016.01
PLUGS AND SOCKETS
discriminator
SELECTnnTY,TONE,VOLUME
V7,8
Type 6SG7, 3rd IF amplifier & .09.0-9.01181 & SENSITIVITY
control
PL1 Plug, JUMPER (for AC Q35-1CDCC3-Cl
AM detector
Lock, line cord; male section 076-.0.0.0397-.01
operation)
V1C Type 6J5, BFO
.09.0-9.01141
Lock, line cord; female section .076-.0.0.0397-.02
PL2 Plug and cord, power
.087-1.0.0.076
Vll
Type 6SL7GT, phase inverter .09.0-9.01219 Mounting foot; rubber .016-1.0.0.029 SOl Socket, octal; BATTERY .0.06-1.0.025.0
V12,13 Pulley, Assembly .028-3.0.0111 POWER
Type 6V6GT, AF power amp-
.09.0-9.01221
Shaft, general coverage dial .074-1.0.0252
S02
Jack, PHONE .[phone]
lifier
Shaft, index control .074-.0.0265.0
S03 Jack, PHONO .036-1.0.0041
V14 Type 5U4G,
rectifier
.09.0-9.0.0719
Spring, dial drive .075-1.0.0232 Socket,
dial lamp
.086-2.0.0.073-01
V15 Type OD3/VR15C,
voltage .09.0-9.01234
Spring, pointer index
.075-1.0.0232 Socket, octal; black molded .0.06-2.0.0296
regulator TS1 Terminal strip, antenna .088-2.0.0976 Socket, octal; mica .0.06-10.0223
V16 Type 6C4,
calibration oscillator .09.0-9.0.083.0 TS2 Terminal strip, speaker .088-2.0.0936 Socket, miniature 7 pin; mica .0.06-10.0268
LM1,2,3,4,5 ,6, 7 ,8,9, 1.0,11,12 Ring, Retaining; index control .076-1.0.0551 Socket, miniature 7 pin; molded .0.06-1.00292
Lamp, pilot; 6-8V., Mazda #44 .039-1.0.0.0.03
shaft per W-12947
bakelite
(blue bead) Window, 'dial .. .022-3.0.0214 Socket,
octal
.0.06-1.0.025.0
Page 14

TS,
!!lAND SHECTOR
SWITCH
5W-,
POSITION RAHGt
,
...
TO
1.62 PIle. AM
1.62
TO
... MC. AM
... TO
"
MC. AM
• "
TO 32
Me,AM
• "
TO 56 MC.AM/fM
..
TO 109 MC.AM/FJr,I
SWITCH SHOWN
,.
POSITION
NO. I
TONE SWITCH
swo· 4
I BASS
HI. FI.
:5. MED.
". LOW
JACK
PHONES n
g;
50
2
RECEIVE I
.l STANDBY
SWITCH SHOWN IN lASS POSITION
o
o
o
o
SW-IKK
:
~
1-
"1
C!37
.047
SW-tAA
SW-II(
c,
x,
'"
J:047
"
SW-IIr
".6
27,000
2 •.
SX-62A & SX-62AU
MARK 2A
R 16 v-}
.- _______ "-SW"'-'· ", _____________________ WMIr. _____ -'S"wc..·""G'-- ______________ ="""IXp~: _7Fe-LOCAl OSCILLATOR
RECEPTION SWITCH
sw· 3
, ,w
,.
PHONO
S., .. ITCH SHOWN IN CW POSITION
LAST R SYMBOL- RI09
LAST C SYMBOL - C 135
' ..
VALUES AND TOLERANCES SHOWN ARE NOMINAL AND VARIA-
TIONS
MAY BE FOUND. IT IS RECOMMENDED THAT THE VALUE
OF ANY REPLACEMENT CORRESPOND TO THE NOMINAL VALUE
OF THE PART BEING REPLACED.
SW - 2 BB
220K
NOTE-
,.YSTAL S""'~~
TII'''''''UI
~ 0
c" .... -----S:-w-.-,:- •• ::-1-w..,oooO'-~
*,022
SEL.ECTIVITY SWITCH sw· 2
{
•• OAO
NORMAL MED.
SNUP
{
BROAD
CRYSTAl. MED.
SNARP
SWITCH SHOWN IN NORMAL BROAD POSITION
RESISTOR VALUES ARE IN OHMS.
ALL RESISTORS ARE 1/2 WATT, UNLESS OTHERWISE SPECIFIED.
CAPACITOR
VALUES ARE IN MFD. UNLESS OTHERWISE SPECIFIED.
K·IOOO
89D282- -F
Fl~. 15. Schematic dia~ram

Warrant!'
"The Hallicrafter's Company warrants each new radio product manu-
factured by it to be free from defective material and workmanship and
agrees to remedy
any such defect or to furnish a new part in exchange
for
any part of any unit of its manufacture which under normal instal-
lation, use and service discloses such defect, provided the unit is delifJered
by the owner to our authorized radio dealer, wholesaler, from whom
purchased, or, authorized service center, intact, for examination, with all
transportation charges prepaid within ninety days from the date
of sale
to original purchaser and provided that such examination discloses in
our judgment that it is thus defective.
This warranty
does not extend to any of our radio products which. have
been subjected to misuse, neglect, accident, incorrect wiring not our own,
improper installation,
or to use in violation of instructions furnished by
us, nor extend to units which have been repaired or altered outside of our
factory
or authorized service center, nor to cases where the serial number
thereof has been removed, defaced
or changed, nor to accessories used
therewith not of our own manufacture.
Any part of a unit approved for remedy or exchange hereunder will
be remedied or exchanged by the authorized radio dealer or wholesaler
without charge to the owner.
This warranty is in lieu
of all other warranties expressed or implied
and no representative or person is authorized to assume for us any .other
liability in connection with the sale
of our radio products."
Form No. 9~X622