Hammarlund HQ-110A Operating and installation instructions

1
-~-------
HQ-110A
COM'MUNICATIONS
RECEIVER
\ \
\
j
--lll
I
II
!I
I
,
-""'"
"" ............ "--. "'" .
... '
'
~
""',
...
...
-
~
I::
I -
I L-
~I
TECHNICAL
DESCRIPTION
AND
OPERATING
INSTRUCTIONS _
"",\
"-
\.
\~
\)
»
l\
,
/'
.!(
\
//
/ .'
k'
. I
Hammarlund Manufacturing Company
A Giannini Scientific Co.
53 West 23rd Street, New York 10, N. Y.
Export Department: 13 East 40th Street, New York 16, N. Y.
MANUAL PART NO, 41383-1
FREE DOWNLOAD COURTESY OF N9SOR WWW.HAMMARLUND.ORG

TIlE
HQ-IIOA
COMMUNICATIONS
RECEIVER
INSTRUCTION AND SERVICE INFORMATION
FOR RECEIVERS STARTING WITH SERIAL #8900
,
ESTABLISHED
1910
ISSUE I
In order to receive the full unconditional gO-day warranty against
defective material and workmanship in this receiver, the warranty
card must be filled out and mailed within two weeks of purchase.
Please refer to serial number of warranty in correspondence.
I ,-.
THE HAMMARLUND MANUFACTURING CO.
A GIANNINI SCIENTIFIC CO.
53 West 23rd Street New York 10, N. Y.
FREE DOWNLOAD COURTESY OF N9SOR WWW.HAMMARLUND.ORG

m
Figure J. The HQ-JJ OA Communications Receiver
TUBE COMPLEMENT
Symbol
VI
V2
V3
V4
V5
V6
V7
V8
V9
VIO
VII
VI2
Type
6BZ6
6BE6
6BE6
I2AX7
6BA6
6AZ8
6BJ7
6AQ5
6BZ6
6C4
OB2
5U4-GB
Tube
Pentode
Pentagrid Converter
Pentagrid Converter
Twin Triode
Pentode
Triode-Pentode
Triple Diode
Pentode
Pentode
Triode
Gas Filled Diode
Twin Diode
Function
RF Amplifier
Mixer
Converter
Q-Multiplier, First AF Amplifier
First IF Amplifier
Linear Detector-Second IF Amplifier, BFO
Detector, Noise Limiter, AVC
AF Output
Crystal Calibrator Oscillator
HF Oscillator
Voltage
Regulator
Rectifier
11
FREE DOWNLOAD COURTESY OF N9SOR WWW.HAMMARLUND.ORG

-
INTRODUCTION
The Hammarlund HQ-110A is an all-new amateur
communications receiver representing entirely new
concepts in electrical and mechanical design. It will
provide years of top performance with minimum
maintenance. The HQ-110A has a self-contained
power supply operating from a 60 cps, 105-125 volt
AC source. Power consumption is 80 watts. The
Hammarlund HQ-110AC incorporates a telechron
automatic electric clock-timer in its design. The ex-
port model, HQ-llOAE, now available, will operate
from a 50 or 60 cps, 115-230 volt AC source, 5ee Fig-
ure 13 for Wiring Instructions.
The HQ-110A is a superheterodyne receiver with a
frequency coverage of the amateur bands as follows:
160 meter band, 1.8 to 2.0 mc, calibrated in
5 KC divisions.
30 meter band, 3.5 to 4.0 mc, calibrated in
5 KC divisions.
40 meter band 7.0 to 7.3 mc, calibrated in
5 KC divisions
20 meter band, 14.0 to 14.4 mc, calibrated in
5 KC divisions
IS meter band, 21.0 to 21.6 mc, calibrated in
10 KC divisions.
10 meter band, 23.0 to 30.0 mc, calibrated in
20 KC divisions.
6 meter band, 50.0 to 54.0 mc, calibrated in
50 KC divisions.
A 2 Meter scale is provided for use with a converter
which has an output in the 6 meter band. Double
conversion is employed for the 40, 20, IS, 10 and 6
meter bands.
A single control provides extremely fine tuning for
the separation of crowded signals. A very high sig-
nal-to-noise ratio, plus the famous Hammarlund
noise limiter circuit, permits full use of the receiv-
er's excellent sensitivity on the weakest signal. A
Q-Multiplier is provided for varying the selectivity
of the receiver.
A new audio output circuit feature is the Auto-Re-
sponse, which automatically narrows and widens the
frequency range of the audio output, according to
the gain required. This feature permits higher fidel·
ity reception on stronger signals, while providing
the sharp cutoff required in receiving communica-
tions under adverse conditions. A second advantage
of the Hammarlund Auto-Response is the rapid
damping of the audio power in the speaker voice
coil which greatly minimizes undesirable speaker
"hangover." The receiver may be used with either
speaker or headphones. Fast acting A VC maintains
a constant audio level. Adequate filtering practically
eliminates AC power ripple.
The HQ-110A is equipped with a stable beat fre-
quency oscillator which provides the operator with
a continuous range of audio tones when receiving
telegraphic code signals. When used in conjunction
with the Q-Multiplier, single signal reception is
assured.
A 100 KC crystal-controlled oscillator is incorpor-
ated to provide 100 KC check points for precise cali-
bration on all seven bands.
A linear detector is provided for the optimum re-
ception of 55B and CW signals.
An "5" .meter is provided to obtain accurate read-
ings on received phone signals and to assure "on-
the-nose" tuning. A send-receive switch is provided
to silence the receiver while transmitting.
Large, comfortable controls in logical groupings are
provided for greatest operating ease. The new futur-
istic front panel is clearly marked to permit full at-
tention to the operation at hand.
The HQ-110A was designed with you in mind. Y ou'II
have many hours of pleasure and use in operating
this truly fine communications instrument.
1
FREE DOWNLOAD COURTESY OF N9SOR WWW.HAMMARLUND.ORG

In
~ 75FT OVERALL--
RECEIVER
A
Figure 2. Installation of Single-wire Antenna
NOTE: I. INNER CONDUCTOR TO PIN
= SHIELD TO SHELL OF PWG
2.
WHEN USING 6 METER COAXIAL CABLE,
OPEN LINK BETWEEN "6M" AND UNMARKED
TERMINAL.
Figure 3. Installation of Folded Dipole Antenna
2
FREE DOWNLOAD COURTESY OF N9SOR WWW.HAMMARLUND.ORG

------------0
INSTALLATION
UNPACKING
Unpack the receiver carefully. Make sure the tubes,
associated tube shields and pilot lamps are in place.
SPEAKER CONNECTION
Connect a 3.2 ohm permanent magnet dynamic
speaker (Hammarlund S-100 Speaker) to the two
terminals marked SPKR. on the rear of the chassis.
(Note Figure 4.) For best performance do not place
speaker on top of receiver cabinet.
POWER CONNECTIONS
Before inserting attachment plug into power outlet,
make certain power source is of proper voltage and
frequency. (Refer to paragraph one of INTRODUC-
TION.)
INSTALLING ANTENNA
-
The HQ-IIOA is designed to operate with a single
wire or a balanced type antenna. The front panel
antenna trimmer control (Figure 5) permits a good
match to most antennae systems of 50 to 600 ohms.
For general coverage, single wire antennae of 20 to
50 feet length will provide surprisingly good recep-
tion. A long single wire outdoor antenna, such as
the one shown in figure 2, will generally provide
entirely satisfactory performance. This wire may
be 50 to 150 feet long.
For best reception, the antenna should be isolated
as much as possible from neighboring objects and at
right angles to power lines or busy highways so as
to minimize possible interference pickup.
Optimum performance on a particular amateur
band or other narrow tuning range will be obtained
by using a tuned half-wave dipole or folded dipole
fed with 300 ohm transmission line or other suitable
lead-in, as shown in figure 3.
To tune the one-half wave length dipole, the follow-
ing formula for the length of the antenna may be
used:
468
Length (feet)
Freq. MCS
Each half ( 1/4 wave length) is half the length
found from the above formula.
A one-half wave dipole can be used on 6 meters
but a commercial beam will perform better.
A separate coax socket input is provided for 6
meters. The terminal strip may also be used as a
separate 6 meter input. In either case the jumper
must be removed from across the 6 meter antenna
terminal strip. If the jumper is left in place and
only a low frequency antenna connected to the
normal input terminals this antenna will be in the
circuit on the 6 meter position.
A socket J3 is provided on the rear skirt for power-
ing a preamplifier such as the Ameco model #PV 50
meter preamplifier. Refer to the schematic dia-
gram for wiring information. Where a 6 meter pre-
amplifier is used the input should be to the 6 meter
antenna connector or strip with the link open.
POWER SOCKET RATINGS:
6.3 V @ .15 amperes 250 V @ 15 Milliamperes
When using plug-in Silicon Rectifier Part No. PL
39143-GI:
6.3V @
.5 Amperes 250 V & 30 Milliamperes
A good ground, although not always necessary, will
generally aid in reception and reduce stray line
hum. Reversal of polarity of power cord plug may
possibly further reduce line hum in some locations.
,...-..
o
SPEAKER
32 OHMS PHONE
METER
ZERO
ADJUST PRE-AMP POWER ANTENNA EXT
RELAY
o
3
Figure 4. Connection Points at Rear of Chassis
FREE DOWNLOAD COURTESY OF N9SOR WWW.HAMMARLUND.ORG

I
1-1
1 2
13--"';"'---
12 ---~---!!i!.o=:!
!!::!::::i!+-- 3
INDEX
NO.
2
3
4
5
6
7
11
10
CONTROL
CAL SET Control
"s" Meter (Carrier Level)
FREQ. Control (Q-MultipIier)
SELECTIVITY Control (Q-MultipIier)
FUNCTION Switch
AUDIO
GAIN Control
LIM Switch (Noise Limiter)
98
INDEX
NO.
8
9
10
11
12
13
14
76 5
CONTROL
TUNING RANGE Switch (Band Selector)
MAN-AVC Switch
SENSITIVITY Control
TUNING Control
ANTENN A Trimmer
CW PITCH Control (Beat Frequency Oscilla-
tor)
Telechron Automatic Clock (Timer)
Figure 5. Location of Controls
4
FREE DOWNLOAD COURTESY OF N9SOR WWW.HAMMARLUND.ORG

OPERATION
AM RECEPTION
For AM reception the position of the controls
should be as follows:
FUNCTION Switch _._ Receive (REC)
TUNING RANGE Switch .. .. 5et to desired
frequency range
MAN - A VC Switch __ _ AVC
FREQ. Control _ Set pointer to
triangular marker
CAL SET Control .Set to vertical
marker
LIM Switch _ As required
TUNING Control _ Tune for highest "s"
meter reading on
signal
ANTENNA Trimmer Tune for highest "s"
meter reading on
signal
SELECTIVITY Control Fully counter-
clockwise*
SENSITIVITY Control ._ Fully clockwise**
AUDIO GAIN Control _._ Adjust for required
level***
*Normally for AM reception, the Q-Multiplier is
switched OFF (fully counterclockwise) for
maximum bandwidth. However, the Q-Multi-
plier may be useful in eliminating interference
from closely adjacent signals at some sacrifice in
the fidelity. The bandwidth is narrowed by
clockwise rotation of the SELECTIVITY con-
trol
**For normal AM reception, the SENSITIVITY
control is fully clockwise. The "s" meter calibra-
tion holds only in this position on A VC opera-
tion. In the presence of extremely strong signals,
the SENSITIVITY control may be reduced to
prevent overloading.
*** A feature of the audio system is the variable
negative feedback employed. Maximum feed-
back is provided at low settings of the AUDIO
GAIN control for the best quality reception of
strong signals. As the AUDIO GAIN control is
increased, the feedback decreases so that on re-
ception of weak signals additional selectivity is
provided by the audio system. This results in an
increased signal-to-noise ratio. A further advan-
tage is the critical damping of the speaker for
elimination of speaker "hangover." This up-
grades the reception of speech and decreases the
noise output of the receiver. A further advantage
is the reduction of distortion at low settings of
the AUDIO GAIN control.
CODE SIGNAL RECEPTION
For CW code reception the position of the controls
should be as follows:
FUNCTION Switch __ _CW-SSB
TUNING RANGE Switch _Set to desired
frequency range
MAN - A VC Switch _ MAN
FREQ. Control _ Set pointer to
triangular marker*
CAL SET Control 5et to vertical
marker
CW PITCH Control __ Pointer on tri-
angular marker
for zero beat tuning
and then offset either
left or right for
desired pitch
TUNING Control __ Tune for zero beat
ANTENNA Trimmer .. ..... _Tune for maximum
response
SELECTIVITY Control "ON" and advanced
as required **
SENSITIVITY Control Adjust for desired
output level
AUDIO GAIN Control _ Clockwise to 12 or
2 o'clock position
*The FREQ. control will peak the selectivity
curve to the left or right over the pass band of
the IF amplifier permitting a high degree of
the control of selectivity for closely adjacent
interfering signals.
**The broadest position of the SELECTIVITY
control (corresponding to a 6 db bandpass of 3
KCS) is with the control turned clockwise just
sufficiently to operate its switch. This puts the
Q-Multiplier in operation. Further clockwise
rotation of the control narrows the bandwidth
until a position is reached, just short of oscilla-
tion, where the bandwidth is of the order of 100
cycles.
The control should be adjusted below
the point of oscillation and to the desired band-
width as required by interference.
SSB RECEPTION
For SSB reception the position of the controls
should be as follows:
FUNCTION Switch _ _ CW-SSB
TUNING RANGE Switch _.5et to desired
frequency range
MAN-A VC Switch _ __ .MAN
FREQ. Control __ Set pointer to
triangular marker
CAL SET Control Set to vertical
marker
5
FREE DOWNLOAD COURTESY OF N9SOR WWW.HAMMARLUND.ORG

IIi
TUNING Control Tune for maximum
clarity
ANTENNA Trimmer .Tune for maximum
response
SELECTIVITY Control _ "ON" but not
advanced beyond
switch *
SENSITIVITY Control _ As required **
AUDIO GAIN Control Clockwise to 12 or
2 o'clock
position ****
CW PITCH Control _ Approximately 1
division left or
right****
*The SELECTIVITY control should only be
advanced beyond the switch "ON" position if
required to increase the selectivity due to
interference.
**The SENSITIVITY control should be advanced
only sufficiently to provide the required output.
The use of a minimum SENSITIVITY control
setting insures that no overload distortion oc-
curs in the receiver.
***Operating with the AUDIO GAIN control
advanced 1/2 to 2/3 rotation insures sufficient
power output while permitting the reduced
SENSITIVITY operation described above.
****The CW PITCH control is set approximately
1 division to the right or left of the triangular
marker, depending on whether the upper or the
lower side band, respectively, is transmitted.
The CW PITCH control is adjusted for maxi-
mum clarity, once the signal has been tuned in.
There will be a correct setting of this control
for each sideband and once these two settings
are determined, they should be noted for
future use in SSB reception.
CALIBRATE
For dial calibration checking, the FUNCTION
switch is set at the CAL position and the other COH-
troIs should be set as listed under CODE SIGNAL
RECEPTION. The receiver is aligned with the CAL
SET control set at the vertical marker and should
be closely correct. The CAL SET control is used to
accurately reset the dial indicator lines if they are
found to be slightly off calibration at any point on
the dials where correct calibration is desired. The
receiver is tuned to produce a zero beat response
with the PITCH control set at the triangular
marker, on any 100 KCS multiple in the desired
band. The CAL SET control is then used to reset
the dial indicator to the correct marker. If the dial
calibration should be foun-d to be beyond the range
of the CAL SET control, the HF Oscillator will re-
quire readjustment (see under SERVICE AND RE-
ALIGNMENT) .
On switching from the CW-SSB position to the CAL
position, an increase in level will be noticed. This
is done deliberately to provide additional gain for
the higher-order harmonics of the 100 KCS crystal
calibrator, regardless of whether the receiver is in
MAN or A VC position.
Note
As only the amateur bands are covered by this
receiver it is not possible to compare the 100
KCS freq. calibrator against WWV. The 100
KCS crystal-controlled oscillator has been
accurately set at the factory. This, plus the fact
that a very low drift .005% crystal is employed,
will insure sufficient accuracy for all practical
purposes. For those who desire frequency ac-
curacy of the crystal calibrator in the order of
cycles, the procedure outlined on Page 14
should be employed.
EXTERNAL RELAY CONNECTION
A standard power receptable is provided on the rear
apron of the chassis for the connection of an ex-
ternal relay-operated switch. This receptacle accom-
modates a standard power plug and when so used
the SEND position of the FUNCTION SWITCH is
not used. A jump~r plug, provided for normal
without relay switching, is removed from the recep-
tacle when using the relay switching.
The usual antenna change-over relay equipped with
a set of normally closed contacts is suggested. The
choice of this relay will depend on the particular
antenna system involved, such as whether a co-ax
relay or one for open wire line is employed. In
either case the extra set of contacts to control the
receiver will be necessary.
TELECHRON AUTOMATIC CLOCK-TIMER
If your receiver is equipped with the built-in Tele-
chron Automatic Clock-Timer, the following in-
structions should be noted:
Every radio-frequency device is stable only at pre-
determined operating temperatures. In order to
eliminate waiting for the receiver to warmup to
operating temperature, the Telechron Timer auto-
matically turns on the receiver ahead of anticipated
operating time. This is accomplished by setting the
6
FREE DOWNLOAD COURTESY OF N9SOR WWW.HAMMARLUND.ORG

--
hand of the timer (small knob at rear of receiver)
to approximately one-half hour before operating
time. The front panel control under Timer is then
set to "Auto" position. The function switch is set to
REC. The receiver is then automatically turned on
at the desired time.
The clock hands are set by the rear knob. "Push in"
and turn the knob to set the switch timing hand and
"pull out" and turn the knob to set the clock
hands. The front switch is set to AUTO and the
function switch is set to REC. when it is desired to
use the automatic clock switch for pre-warming the
receiver before operation or for use as an alarm to
turn the receiver on to a pre-tuned station. To use
the function switch normally, the clock switch
should be left in the ON position.
The clock will continue to run as long as the re-
ceiver line cord is connected to the power outlet,
and is extremely useful for checking sign-in periods
and schedules.
If your receiver is not equipped with the standard
Telechron Automatic Clock-Timer, and you would
care to have the accessory added, The Clock Kit,
with full installation instructions, may be pur-
chased from your local Hammarlund dealer.
Instructions for connecting the standard clock·timer
are as indicated in figure 12.
The Export Model Clock-Timer HQ-110AE is now
available from your local Hammarlund Dealer. This
automatic Clock-Timer will operate from a 50-60
CPS, 115-230 Volt AC source. Instructions for con-
necting the export model Clock-Timer are as indi-
cated in Figure 13.
CIRCUIT THEORY
The HQ-110A is a superheterodyne receiver cover-
ing the 6, 10, 15, 20, 40, 80.and 160 meter amateur
frequency bands. Double conversion is employed in
the 6 through 40 meter bands. Twelve tubes are
used, including the Rectifier and Voltage Regulator
of the self-contained power supply. The circuitry of
the receiver includes a 100 KCS crystal calibrator, a
Q-Multiplier for full control of selectivity, an effec-
tive noise limiter and a separate highly stable Beat
Frequency Oscillator.
PRESELECTION
The antenna input coupling and RF amplifier stage
provide the necessary preselection and gain for high
performance and rejection of undesired signals. The
high signal level at the mixer grid, V2, contributes
to a favorable signal-to-noise ratio.
Both grid and plate circuits of the RF stage are
tuned; individual tuning coils are selected for each
band.
The antenna compensating capacitor, adjustable
from the front panel, permits the receiver to be
resonated for optimum performance with the par-
ticular antenna in use.
CONVERTER STAGE
A high degree of oscillator stability is attained by
the use of a separate mixer (6BE6), V2, and an in-
dependent oscillator (6C4), VI0.
The output signal from RF amplifier, VI, is hetero-
dyned with the output of the local high frequency
oscillator, VlO, and electronically combined within
the mixer tube, V2. On the 80 and 160 meter bands,
the local oscillator is 455 KCS above the signal
frequency. On the 10 to 40 meter bands, the local
HF Oscillator is 3035 KCS above the signal fre-
quency. On the 6'meter band, the local HF Oscilla-
tor is 3035 KCS below the signal frequency.
When operating in the 6 to 40 meter bands, the dif-
ference frequency of 3035 KCS is heterodyned with
the output of the 2580 KCS crystal controlled oscil-
lator and electronically combined within the con-
verter tube, V3, to produce the 455 KCS final inter-
mediate frequency.
Low-loss tube sockets, low-loss phenolic, temperature
compensating capacitors, and stable, coaxial glass
trimmer all contribute to oscillator stability. Addi-
tional frequency stability is attained by applying
regulated voltage to the oscillator circuit and by the
rugged construction of the entire HF oscillator sec-
tion assembly.
Q·MULTIPLIER
The Q-Multiplier circuit employed in this receiver
provides a means of peaking any signal within the
pass band of the IF amplifier. The degree of peak-
ing is controlled by the SELECTIVITY control. The
bandwidth varies from 3 KCS with the SELECTIV.
ITY control switch just "ON" to approximately 100
7
FREE DOWNLOAD COURTESY OF N9SOR WWW.HAMMARLUND.ORG

cps with the control just below the oscillation point.
If interference is experienced caused by two stations
operating very close to one another, the Q-Multi-
plier may be employed under these circumstances to
minimize, if not eliminate, the interference by the
improved selectivity or' the decreased bandwidth
proper adjustment will provide. The proper use of
the Q-Multiplier can actually enhance many times
the results obtained with the receiver. In view of
this, it is suggested that a little time be spent in
learning just how to properly adjust the Q-Multi-
plier frequency and selectivity controls under differ·
ent receiving conditions. As the Q.Multiplier
SELECTIVITY control is advanced, a decided de-
crease in noise will be apparent. This is due to the
narrowing of the pass band. On AM pbone signals
this control will usually be between the 7 and II
o'clock positions. The FREQUENCY control
should then be adjusted for clarity of signal or for
minimum adjacent channel interference. The
SELECTIVITY control may be advanced progres-
sively more for SSB and CW reception. The more
this control is advanced, the more critical the set-
ting of the FREQUENCY control becomes. The CW
PITCH control will also affect the Q-Multiplier
FREQUENCY control setting. Advancing the
SELECTIVITY control too far will cause the Q-
Multiplier to oscillate. This should be avoided and
the best setting of this control for CW reception is
just below the oscillation point, where maximum
peaking occurs. The Q-Multiplier is a very handy
tool in the hands of an experienced operator and,
unfortunately, it is beyond the scope of this instruc.
tion manual to attempt to be more definite than we
have.
IF AMPLIFIER
Nine stable tuned circuits, in three stages of IF am-
plification, V3, V5, and V6A, contribute to sensi-
tivity and selectivity. On the 80 and 160 meter
bands, the Intermediate frequency is 455 KCS. On
the 6 to 40 meter bands, the first conversion is to an
Intermediate frequency of 3035 KCS, employing
two tuned circuits and the second conversion is to
the 455 KCS Intermediate frequency employing
seven tuned circuits. Iron core permeability-tuned
transformers improve performance and add to the
ease of adjustment.
AVC SYSTEM
Automatic Volume Control minimizes fading and
signal strength variations by controlling the gain of
the RF stage, VI, and the IF stage, V5. As a result,
a comfortable and constant level of audio is main-
tained. The A VC voltage for the RF Amplifier tube,
VI, is provided with a delay voltage which prevents
the AVC from operating on the RF Amplifier tube
on extremely weak signals, thus maintaining the
maximum sensitivity and signal-to-noise ratio.
"5" METER (CARRIER LEVEL)
The "S", or Tuning, Meter is provided to assist in
tuning and to give an indication of relative signal
strength. Because the meter readings are propor-
tional to AVC voltage, it is operative only in the
AVC position and on AM reception. In the MAN
position of the MAN-A VC switch, the meter pointer
will not indicate the signal strength. However, the
meter pointer will assume various positions, includ.
ing slightly off scale, depending on the setting of
the SENSITIVITY control and the FUNCTION
switch. In any operating position of the FUNCTION
switch, receiver overload is indicated by a reverse
reading of the meter.
The meter, which is calibrated to 40 db over S-9, is
factory adjusted so that a signal input of approxi-
mately 50 microvolts gives a reading of S-9. Each
"s" unit indicates a 6 db increase, equivalent to
doubling signal strength. Should meter readjust-
ment be necessary:
1. Set FUNCTION switch to REC.
2. Set front panel SENSITIVITY control to
"10."
3. With receiver off, mechanically zero pointer
with a fine screwdriver.
4. With AVC on and the ANT. terminals
shorted, adjust the pointer to zero with
ZERO AD} potentiometer R19.
DETECTOR AND NOISE LIMITER
One section of the 6BJ7 tube, V7, is used for the sec-
ond detector and AVC system for the IF amplifier.
This system produces a minimum of distortion.
8
FREE DOWNLOAD COURTESY OF N9SOR WWW.HAMMARLUND.ORG

+4
+2
0
-2
-4
..
-6
.!
u
>.
-9 (,)
0
0 -10
0
-
E -12
0
~
tIl
-14
a
-16
-18
-20
-22
10
~1
I-Ill~
~
I:
~.
~
....
.,~
IIIl
_.
~
,..
,
,~
~
"'IIIl
" ,
L
..
/ , ,
....... ~
.#
" ,
~
4
~
I~~
~
•
,
II....
~r
HQ-llOA Audio Characteristic
.,~
A--Max. AF Gain Control
If
IJ
B --- AF Gain Approx. 25% of rotation
I~
from Min. Simulating Average
J
Setting for local Broadcast
~
Stations (IV at Antenna Input)
Output at 1000 CPS = 500 MW
, A
Input .10 V Across AF Gain Control Con-
~
stant
J B
Input 1.4 V Across AF GAIN Control Con-
I'.
stant
If
A
10 1 10
3
Frequency in Cycles Per Second
Figure 6. Auto-Response Curve
One section of the V7 operates as a series, self·ad·
justing noise limiter. It will reduce automobile ig-
nition and other types of impulse noise to a min-
imum.
Intelligibility is not affected by the noise limiter,
although it may be switched off if desired. The third
section of the V7 provides delayed A VC for tbe RF
amplifier tube.
BEAT FREQUENCY OSCILLATOR (BFO)
The triode section of the (6AZ8) V6B is used for
the beat frequency oscillator. The CW PITCH con·
trol is used to vary the beat tone. Each calibration
division of this control represents approximately
1000 cycles. When receiving single side band trans-
mission, the generally accepted procedure of setting
the beat frequency oscillator approximately 2000
cycles
above or below zero beat should be employed.
In other words, if the beat frequency oscillator CW
PITCH control is set two degrees clockwise or coun-
terclockwise from the center position, optimum
single side band reception will usually be obtained.
Whether the beat frequency oscillator control will
be set clockwise from zero beat will depend on
whether upper or lower side band is being trans-
mitted. If the beat frequency oscillator is on the
wrong side of zero beat, it will be impossible to
obtain intelligibility of the single side band signal
when the dial is tuned very slowly through the
single side band signal. Should such a condition
arise, merely rotate the CW PITCH control from
the two degrees counterclockwise to the two degrees
clockwise position and then very carefully adjust
the tuning for intelligible speech. Here again ex-
perience is the best teacher. The stability of both
the high frequency oscillator employed in this
receiver plus the excellent mechanical rigidity will
provide excellent single side band reception. Refer
to the above paragraph on the Q-Multiplier for im-
proved single side band reception.
CRYSTAL CALIBRATOR
A (6BZ6) tube, V9, a hermetically sealed quartz
crystal unit and associated components, provide a
highly stable 100 KC crystal-controlled oscillator.
9
FREE DOWNLOAD COURTESY OF N9SOR WWW.HAMMARLUND.ORG

An adjustable ceramic trimmer capacitor is pro-
vided for accurately adjusting the oscillator fre-
quency against an external standard frequency such
as WWV. It provides signal markers at 100 KC in-
tervals throughout the tuning range of the receiver.
I.INEAR DETECTOR
The pentode section of the (6AZ8) V6A functions
as a linear detector for CW and SSB reception, re-
sulting in a clear undistorted beat note on CW and
greater ease of tuning and freedom from interfer-
ence on SSB reception.
AUDIO AMPLIFIER
The first audio stage is a resistance coupled voltage
amplifier employing the other section of the
(I2AX7) V4B. The audio output stage is a (6AQ5)
beam power amplifier, V8, providing an undistorted
output level of at least one watt.
SUGGESTED PROCEDURE FOR EI.IMINATING COMMON TROUBLES
1. Most of the trouble that has developed has been
due to one or more defective tubes. In the event
your receiver has excessive hum or erratic "S"
meter operation, the two tuhes most likely to
cause this condition is V7 in the schematic dia-
gram on Page 19 of our Instruction Manual, this
is a 6Bj7 or V6A, the 6AZ8 tube type may also
develop internal shorts.
2. Failure of the "Q" multiplier to operate prop-
erly or another possible source of excessive hum
may be due entirely to the 12AX7, V4A and
V4B, since this is a combined "Q" multiplier
tube and first audio amplifier. Please do not
rely too much on testing the tubes in a tube
tester unless they are completely dead, when
internal shorting occurs, there is a possibility
that a tube tester will not prove reliable. This is
due to the fact that most tube testers do not pro-
vide a means of testing excessive heater to cath-
ode leakage, which is the most common cause
of hum complaints. It is therefore, suggested
that any suspicious tube be replaced with a new
one, sinc~ this is by far the best method of defi.
nitely eliminating this possible cause of com·
plaint.
3. Excessive oscillator drift which would be most
noticeable on all of the high frequency bands
plus a microphonic condition is usually the re-
sult of a poor type 6C4 high frequency oscillator
or VI0 in the schematic diagram. This tube is
also
capable of producing a poor beat note that
may have a ripple in it, especially noticeable on
the high frequency bands.
4. Excessive drift can also be attributed to a poor
6BE6 employed in position V2. In addition, the
6BE6 employed in V2 can also cause hum modu-
lation which will be most noticeable on the two
high frequency band~. Sometimes merely inter-
changing the 2 6BE6 tubes employed in Posi-
tions V2 and V3 may produce a noticeable im-
provement. If this is not the case, we would sug-
gest
the purchase of another 6BE6.
5. It is normal for less output to be obtained in the
CW ISSB position than in the Receive or Cali-
brate position. To compensate for the slight loss
in level, merely advance the audio control
should this be required.
CALI BRA TION COMPLAINTS:
Please remember that the 100 kc calibrator was
built into the HQ-IIOA receiver as a means of de-
tecting dial error. The incorporation of the 100 kc
crystal oscillator does not mean that you will find
the 100 kc markers exactly at 100 kc intervals, inso-
far as dial reading are concerned. Obviously, if the
100 kc calibrator would line up at each of the 100
kc dial markers, there would be no point in incor-
porating the 100 kc crystal calibrator. Dial error in
the order of 5 to 10 kc for the lower frequency
bands, and 25 to 50 kc error on the 10 and 6 meter
bands, is within our production tolerance. The pro-
cedure for correcting frequency deviations in excess
of those previously specified will usually involve
only a minor adjustment of the high frequency
oscillator trimmer capacitor.
Please refer to Pages II thru 14 of your instruction
manual where the various alignment points are
clearly indicated. All of the oscillator trimmer ad-
justments are clearly marked in figure 8, and obvi-
ously the proper trimmer for the particular band is
the only adjustment to make. Please be sure, there-
fore, before attempting to make minor frequency
(Continued on page 20)
10
FREE DOWNLOAD COURTESY OF N9SOR WWW.HAMMARLUND.ORG

SERVICE AND ALIGNMENT PROCEDURE
NOTE
Before servicing this receiver, disconnect from power source and remove all lead·
wires attached to terminal connections at rear of chassis apron. Carefully turn the
receiver up onto the front panel face on a smooth clean surface. Remove the two
No. 10 hex machine screws at the extreme ends of the chassis apron at the rear of
the cabinet, and the knob from the clock adjustment shaft if receiver is so
equipped. Lift cabinet straight up and off of chassis. To reassemble, use reverse
procedure.
ADJUST OSC SLUGS AND TRIMMERS AT INDICATED
FREQUENCIES FROM TOP
ANTENNA ADJUSTMENTS
RF ADJUSTMENTS - MCS
CRYSTAL
IF
ADJUST-
MENTS
455
KCS
/21 7 1.8 TOP SLUG \
28 14 3.5 BOTTOM SLUG
3.5 21
MCS
CALIBRATOR
TRI MMER C36 /28 7.0
VI2
7 14
21 28
OSCILLATOR
ADJUSTMENTS
MCS
TOP BOTTOM
1.8
3.5
\ 2 4 7.3 14.4 21.6 30 54/
IF ADJUSTMENTS
455 KCS TOP
HF OSCILLATOR MCS
3035 KCS BOTTOM
Figure 7. Top View of Chassis
II
FREE DOWNLOAD COURTESY OF N9SOR WWW.HAMMARLUND.ORG

IF ALIGNMENT Note
Use a non-metallic alignment tool. such as
General Cement Co. No. 5097, or equal.
a. Connect the output cable of a 455 KCS unmodu-
lated, signal generator to the bus lead of the
(6BE6) V2 mixer grid. The frequency accuracy
of the generator may be checked with sufficient
precision by picking up its second harmonic (910
KCS) in any receiver whose calibration at 910
KCS
has been checked as correct and then adjust-
ing the generator frequency.
b. Connect a DC vacuum tube voltmeter, set for
negative voltage reading to terminal 2 of the T5
IF transfonner and chassis ground.
c. Set the receiver controls as follows:
CAL SET control on marker
FUNCTION switch on REC.
Tuning dial on 1.8 mc
Noise limiter (LM) switch on OFF
AUDIO GAIN control at minimum
SELECTIVITY control OFF
TUNING RANGE switch on 1.8 -2.0 mc
MAN • AVC switch on MAN.
SENSITIVITY control on 3 from maximum
d. During alignment, adjust the generator output
and the SENSITIVITY control to prevent over-
loading. Final adjustment should be made with
the SENSITIVITY control at approximately the
RF
/,-------------------,
2 4 7.3 14.4 21.6 30 54
OSC 50 MCS
RF 50 MCS
Figure 8. Bottom
View of Chassis
.1
12
FREE DOWNLOAD COURTESY OF N9SOR WWW.HAMMARLUND.ORG

third indice from its maximum (clockwise) posi- h.
All RF and oscillator slug adjustments are made
tion. Adjust each of the three IF transformers,
from the top of the shield cans. 50-54 mcs, RF
T3, T4 and T5, for maximum meter reading.
coils do not have slugs. The RF coil of this hand
Topside adjustments are secondaries or grid cir- is
"knifed" for adjustment of inductance. A slight
cuits; hottom of chassis adjustments are prima-
spreading of the turns decreases the inductance.
rie or plate circuits. Adjust the top slugs of Tl
Pushing the turns slightly closer together increas-
and T2 for maximum Meter Reading.
es the inductance. The OSC coil slug for this hand
e. Turn the SELECTIVITY control clockwise to a is
at the underside of the chassis.
position helow the oscillating point. With its col- c.
Connect the unmodulated, signal generator out-
lar set-screw loosened to permit the frequency
put cahle to the antenna and ground terminals of
shaft to turn without hindrance hy the stop, ad- the receiver, with the A terminal adjacent to the
just the FREQ. control to ohtain a maximum G terminal jumped together. Leave the vacuum-
meter indication. The input signal must he ad- tuhe voltmeter connected as for IF alignment.
justed to a value just sufficient to ohtain a good d. Set the controls the same as for IF alignment,
meter swing. This adjustment is the center fre-
"c." ahove. Adjust the SENSITIVITY control as
quency of the pass hand. While the meter is at
required to ohtain a sufficient voltmeter reading
maximum, turn the collar so that the long set
and to prevent overloading. Set the CAL SET con·
screw is in a position 180 degrees directly oppo-
trol to the vertical marker.
site the stop lug. Holding it in this position,
e. The oscillator adjustment is made first. The RF
tighten the set screw, making sure that the shaft
is adjusted next to ohtain maximum amplitude.
has not turned hy checking the zero setting.
The antenna slugs are adjusted last. A certain
f. Turn the FUNCTION switch to CW-SSB and
amount of interaction will occur hetween the os·
with the CW PITCH control stop collar loosened,
cillator and RF adjustments, particularly on the
adjust the CW PITCH control for zero heat.
higher frequency hands. Final adjustment should
Turn the collar so that the long set screw is in a
he accomplished hy comhined or alternate ad-
position 180 degrees from the stop lug. Holding
justment of the oscillator and RF for maximum
it in this position, tighten the set screws, making
amplitude.
sure that the shaft has not turned from the zero
Note
heat position.
The trimmer adjustments, if required, should
g. Turn the FUNCTION switch to REC and the
he the final adjustments for each hand.
other controls as shown under "c." Set the TUN-
r. Note that the oscillator frequency in the HQ-
ING RANGE switch to 7.0 -7.3 MCS. Set the un-
BOA is on the high side of the signal frequency,
modulated signal generator frequency to 3035
except on the 6 meter hand, 50-54 mcs, where it
KCS.
Using a non-metallic alignment tool, such
is on the low side of the signal. Therefore, it is
as
General Cement Co. No. 8282, or equal, ad-
necessary to make sure that the oscillator fre-
just the hottom cores of the transformers Tl and
quency is not adjusted helow the signal frequency
T2 for maximum meter reading. During this a-
which would he an image response of the signal
lignment, adjust the generator output and the
on all hands except 50-54 mcs where the reverse
SENSITIVITY control to prevent overloading.
is true.
h. With the MAN - AVC switch on AVC, the SEN-
g. It will he necessary to repeat low and high end
SITIVITY control at maximum, with grid, pin 1,
alignment adjustments of each hand since the
of the VI amplifier tuhe grounded, and with no
adjustments are interdependent. The process
signal input, adjust the METER ZERO ADJUST.
should he repeated until maximum amplitude is
potentiometer at the rear of the chassis for a ohtained at hoth alignment frequencies of each
reading of zero on the "S" meter.
hand.
RF ALIGNMENT
h. On the 6-meter hand, a shift in oscillator fre-
Note
quency occurs upon replacing the receiver in the
Use a non-metallic alignment tool such as
cahinet, with the result that the dial reads ap-
General Cement Co. No. 8282, or equal.
proximately 50 KCS, or one division low. This
a. The slugs and trimmers, having he en factory ad- condition may he corrected as follows:
justed, should require a minimum amount of (1) After alignment in the normal manner with
adjustment for any realignment. the receiver out of the cahinet, adjust the
13
FREE DOWNLOAD COURTESY OF N9SOR WWW.HAMMARLUND.ORG

slug of T23, the 6-meter oscillator coil, un·
til a 50.00 KCS signal is received at approx-
imately 50.05 on the dial.
(2) Place the chassis in the cabinet, or place a
metal plate (such as a cookie sheet) over the
bottom of the chassis. The dial reading
should be approximately correct. If it is not,
readjust the slug of T23 as required.
Note
The receiver should be warmed up at least
one-half hour before final oscillator frequency
adjustments are made for the dial calibration
check.
CALIBRATOR ALIGNMENT
The crystal calibrator is factory adjusted to zero-
beat with the Bureau of Standards Radio Signal
WWV. If minor adjustments are determined neces-
sary, to re-zero the calibrator, an external receiver
capable of receiving station WWV on anyone of its
operating frequencies is necessary since the tuning
bands of HQ-llOA do not include anyone of these
frequencies.
To re-zero the calibrator, connect A wire to the
antenna terminal of the HQ-IlOA farthest away
from the ground terminal. The other end of this
wire is connected to the antenna terminal of the
receiver used for Heterodyning. During this pro-
cedure the link between the ground terminal and
nearest antenna terminal of HQIlOA should be
open, to improve the output of the calibrator into
the heterodyning receiver. Tune in a strong signal
on anyone of the WWV frequencies and zero-beat
the calibrating oscillator with WWV by slowly
rotating ceramic trimmer C-36 at the top rear of the
chassis.
~
-
-
-
-
-
\ , , I I
\ \ I I I
\ \ I
.. \,
C!
I/
A-
\
,+-
,
, I
, ,
E
s-
..-,
, ; I I
\ \ , , I
\ \ , I
\
1\ \ , II
I'
,
, \ , I
, , , I
\' , ,
\ ,
\ , ,
\ ,
I ,
HQ·ll0A Selectivity
A
Regular if
6.0 KC at 6DB
B - - Q Mull. Max Width
, I
2.9 KC at 6 DB
'I
C-··· Q Mull. Adj. for
\\'I
.3 KC at 6DB V
I I
30 20
10 0 + 10
K C off Resonance
20 30
cr>
o
o
N
cr>
o
o
'<f
co
a
co
C)
o
<Xl
Figure 9. Selectivity Curves
14
FREE DOWNLOAD COURTESY OF N9SOR WWW.HAMMARLUND.ORG

~=---- i --~--~~---~_ ..
) ))
TABLE 1. TUBE SOCKET VOLTAGES
Measured from tube socket pins to chassis with vacuum tube voltmeter. AUDIO GAIN minimum. BAND SELECTOR on 7.0 - 7.3 MCS. Noise Limiter
OFF. MAN-AVC on MAN. SENSITIVITY Control maximum except where noted. Function switch on CW.SSB, except where noted. SELECTIVITY
control ON but counterclockwise. Line voltage II7. No signal input.
SOCKET PIN NUMBERS
TUBE
1 2 3 4 5 6 7 8 9
VIRF
1.4
6BZ6 -4.2 Sens -
6.3 ac 235 105 ---
Min
V2 MIXER
6BE6 Approx.
-4.8 1.9 - 6.3 ac 215 105 ---
V3 CONVERTER
6BE6 -3.2
--
6.3 ac 233
82 ---
V4 Q-MULT-Ist AF
12AX7 233
-2.5
6.3 ac 6.3 ac 88 -8 -
V5 1st IF
6BA6 --
6.3 ac -230 105
2.3
68 (SENS MIN) --
V6 LIN DET-2nd IF
BFO 200 145 2.75
6.3 ac --0
67
Approx.
6AZ8
68 (SENS MIN)
-4.6
V7 DET-LIM-AVC
-.6
2.2
-.34 -.34
6BJ7 -
ONREC
-
6.3 ac --
onREC
onREC onREC
V8AFOUTPUT
6AQ5 -13.2 6.3 ac -260 240 ---
V9 CALIBRATOR
-12 to- 58 9.2
105 to 84
91 to 82 9.2
6BZ6 on CAL
on CAL
---
6.3 ac on CAL
on CAL on CAL --
VIO HF OSC
6C4 100 - -
6.3 ac
--
Approx.
-6
- - -
VII VOLTAGE
REG.OB2
105 -- - 105 - - - -
VI2 RECTIFIER
5U4-GB -270 -235 ac -
235 ac -270 -
"'"'
CJl
FREE DOWNLOAD COURTESY OF N9SOR WWW.HAMMARLUND.ORG

......
0\
TABLE 2. TUBE SOCKET RESISTANCES
Measured from tube socket pins to chassis with vacuum tube ohmmeter with pin 1 of V6, 6AZ8, temporarily grounded except as noted. AUDIO GAIN
ON but counterclockwise; Noise Limiter switch ON; SENSITIVITY control maximum except where noted; MAN -AVC on MAN; FUNCTION
switch on CW-SSB except where noted; TUNING RANGE on 7.0 -7.3 MCS.
SOCKET PIN NUMBERS
TUBE
1 2 3 4 5 6 7 a 9
VI RF
180
6BZ6 470K 1.7K Sens 0 -4.7K
8.7K
0 --
Min
V2 MIXER
6BE6 22K 160 0 -15K
8.7K
0 --
V3 CONVERTER
6BE6 22K 1.6 0 -
5.7K
12K 0 --
V4 Q MULT-lst AF 14.3K
12AX7 5.7K
2.2 Meg 4.3K Sel --505K 1 Meg 2.2K 0
max
150
V5 1st IF
lOOK
0 -0
5.7K
8.7K
10K Sens --
6BA6
mIn
V6 LIN. DET-2nd 200
lOOK
IFBFO 4.7K* 38K 10K Sens -0 110K Sens 0 52K 47K
6AZ8
mIn
min
V7 DET-LIM·A VC
6BJ7 0 195K 0 -0 470K
ONAVC
4.7K 2.2 Meg
2.2 Meg
V8 AF OUTPUT
6AQ5 500K 430 -0
5.3K
4.7K 500K --
V9 CALIBRATOR
Inf Inf
6BZ6 470K 4.7K 0 -
475Kon
105Kon 4.7K
--
Cal Cal
V10HF OSC
6C4 9.7K -0 --47K 0 --
V11 VOLTAGE
REG.OB2
8.7K ---
8.7K
-0 --
V12 RECTIFIER
5U4-GB -
5.1K
-60 -
63 0 5.1K -
Note* With pin 1 of V6 ungrounded and with pin 6 of va, 6AQ5 grounded.
)" ))
FREE DOWNLOAD COURTESY OF N9SOR WWW.HAMMARLUND.ORG

,.
----------------0
HQ·ll0A PARTS LIST
SCHEMATIC IDESIGNATION DESCRIPTION
CAPACITORS
Variable, Tuning
Cl
Temp. Compo Oisc. 110 MMF, N750 ±5o/c, 1000V.
C2
Oisc. Ceramic .01 MF +80 - 200/0, 600V ..
C3, 4,
5, 6, 7 C8
Temp. Compo Oisc. 110 MMF, N750' ± 50/0, 1000V.
C8
Oisc Ceramic .01 MF +80 - 200/0, 600V ..
C9, 10, 11,
12
Our·Mica OM·15 20 MMF ±.5 MMF, 500V.
C13
Our·Mica OM·19 560 MMF ± 50/0, 500V.
C14
Our-Mica OM·20 3300 MMF ± 5 %, 500V.
C15
Our·Mica OM-19 1100 MMF ± 20/0, 500V ..
C16
Our-Mica OM·19 510 MMF ±5%, 500V.
C17
Oisc Ceramic
.01 MF +80 - 200/0, 600V ..
C18,19 Oisc Ceramic
.04 MF +80 -200/0, 600V.
C20,21 Oisc Ceramic
.01 MF +80 - 20%, 600V ..
C22,23,24 Oisc Ceramic
.04 MF +80 -20%, 600V.
C25
Oisc Ceramic
.01 MF +80 - 200/0, 600V ..
C26,27 Oisc Ceramic
.01 MF GMV, 1000V.
C28
Oisc Ceramic .01 MF +80 -20%, 600V.
C29,
30, 31, 32
Oisc Ceramic .005 MF GMV, 1000V.
C33
Oisc Ceramic .01 MF +80 - 20%, 600V.
C34
Variable, Trimmer 8·50 MMF .
C36
Our·Mica OM·15 100 MMF ±10%, 500V ..
C37
Variable, Antenna Tuning 3-2·25.0 MMF .
C39
C40,41 Mica
Trimmer, 3·35 MMF .
Mica Trimmer, 1.5-20 MMF
C42,43,44,45,46
Our·Mica OM-15 24 MMF ±.5 MMF,500V.
C48
C49,
50, 51 Variable, Trimmer 1-8 MMF
Our·Mica
OM-15 243 MMF ±5%, 300V.
C52
Temp. Compo Oisc, 15 MMF N330 ±50/0, 1000V.
C53
C54 Variable, Trimmer 1·8 MMF
Temp.
Compo Disc, 35 MMF N330 ±50/0, 1000V.
C55
C56 Variable,
Trimmer, 1·8 MMF
C57
Temp. Compo Oisc. 15 MMF N330 ±50/0, 1000V ..
C58
Variable, Trimmer 1·8 MMF
C59
Temp. Compo Oisc. 4.7 MMF N750 ±50/0, 1000V ..
C60
Variable, Trimmer 1-8 MMF
C61
Our-Mica OM-15 7 MMF ±.5 MMF, 500V.
C62,63 Our-Mica OM.15
47 MMF ±.5 MMF, 300V. ..
C64
Our-Mica OM-15 100 MMF ± 10%, 500V ..
C65
Oisc Ceramic .01 MF +80 -20%, 600V.
C66,67 Our·Mica OM-30
4300 MMF ±5%, 500V ..
C68 Our-Mica
OM-19 510 MMF ±50/0, 500V.
C69
Our-Mica OM-15 3 MMF ± .5MMF,500V.
C70 Oisc Ceramic
.01 MF +80 -20%, 600V.
C7l,72
Oisc Ceramic .01 MF GMV, 1400V.
cn, A, B, C Electrolytic, 60,
40 MF 450V, 25 MF 50V.
C74
Our-Mica OM·15 56 MMF ±.5 MMF, 500V.
C75
Our-Mica OM-15 66 MMF ± 3%, 300V.
cn
Our-Mica OM·15 47 MMF ±.5 MMF, 300V.
C78
Our-Mica OM·15 2 MMF ±.5 MMF,500V.
C79
Temp. Compo Oisc 4.7 MMF N470 ±5%, 1000V.
C80
Our-Mica OM-19 2100 MMF ±2%, 500V ..
C81
Temp. Compo Ceramic 130 MMF N750 ±5%;1000V ..
I
HAMMARLUND
PART NO.
T41604·5
K23010·5
M23034·19
K23010·5
M23034.19
K23006·17
K23027-6
K23041·2
K23027·2
K23720-3
M23034·19
M23034·12
M23034-19
M23034·12
M23034·19
M23034·20
M23034·19
M23034·10
M23034·19
K23038-5
K23006-1
K34454-G24
K23043·5
K23043-6
K23006·48
K23008-2
K23006·27
K23010-42
K23008·2
K2301044
K23008-2
K2301042
K23008-2
K23010-6
K23008-2
K23006·24
K23006·47
K23006-1
M23034·19
K23042-2
K23027·3
K23006-18
M23034-19
M23034·26
K15504·64
K32006·67
K23006·113
K23006·47
K23006-37
K23010·8
K23027·13
K23063-92E
17
FREE DOWNLOAD COURTESY OF N9SOR WWW.HAMMARLUND.ORG