Hammarlund SP-600-JI-17 User manual

=--------------*'-----'--------""""'-------;;;
T. O. 31R2-4-18-16
HANDBOOK
PREVENTIVE MAINTENANCE
INSTRUCTIONS
HAMMARLUND RADIO RECEIVER
~
MODELS SP-600-JI-17 AND SP-600-JI-21
~®~ LATEST REVISED PAGES SUPERSEDE
II ,,~')!~ ~ u I.S'J THE 5A~~ •• ~A'?~~d ?= •. ~~~~~.~U5 DATE
~ ~ ~ O'l\C£ ~ublication. Destroy superseded pages.
~~ II
PUBLISHED UNDER AUTHORITY OF THE SECRETARY OF THE AIR FORCE
!!.--_-----------*-----------_.:....-..!!
GATEWAY PRESS, INC._L'VILLE - 1,200 REffiINT - 8-10-61
6 MARCH 1959
REVISED 27 JANUARY 1961

T.O. 31R2-4-18-16
Reproduction for non-military use of the information or illustrations contained in this publication is
not permitted without specific approval of the issuing service lBuAer or USAFl. The policy for use
of Classified Publications is established for the Air Force in AFR 205-1 and for the Navy in Navy
Regulations, Article 1509 .
..._------------- LIST OF REVISED PAGES ISSUED
INSERT LATEST REVISED PAGES, DESTROY SUPERSEDED PAGES.
NOTE: The panian of the text affected by the current revision is indicated by avertical line in the oueer margins of the page.
Page
No. Revised
.27 January 1961
iii-iv .. ' .. 27 January 1961
1
thru 10 Deleted. 27 January 1961
15 thru 20 Deleted. 27 January 1961
21
thru 26 Deleted. 27 January 1961
28 27 January 1961
34 27
January 1961
39
thru 44 .27 January 1961
46 .27 January 1961
51
.27 January 1961
61
.... 27 January 1961
72
.. 27 January 1961
80 27 January 1961
90 .27 January 1961
95 .27 January 1961
96 .27 January 1961
97
thru 100 Deleted 27 January 1961
*' The asterisk indicates pages revised, added or deleted by the current revision.
ADDITIONAL COPIES OF THIS PUBLICATION MAY BE OBTAINED AS FOllOWS:
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NAVAL ACTIVITIES.-Use Publicacions and Forms Order Blank (NavAer 140) and submic to the nearest I?ublicacions supply
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For listing of available publicacions see Naval Aeronautic Publications Index (NavAer 00·500).
USAF
ARevised
27 January 1961

T. O. 3lR2-4-18-16
TABLE OF CONTENTS
Table of Contents
List of Illustrations
Number
1. 1(6)
1. 2(6)
1. 3(2)
1. 4(3)
1. 5(6)
1. 6(6)
1. 7(9)
1. 8(6)
1. 9(15)
2. 1(5)
2. 2(5)
2. 3(5)
2.4(5)
2.5(5)
3. 1(1)
Number
Title
Deleted
Radio Receivers SP-600-JX-21 and SP-600-JX-17, Power Supply
Deleted
Deleted
Radio Receivers SP-600-JX-21 and SP-600- JX-17, Intermediate-
Frequency Rejection Ratio .
Radio Receivers SP-600-JX-21 and SP-600-JX-17, Image Rejection
Ratio ..............•............................
Radio Receivers SP-600-JX-21 and SP-600-JX-17, Audio Power and
Intermediate-Frequency Output ...........•.............
Radio Receivers SP-600-JX-21 and SP-600-JX-17, Heterodyne
Interference Check .
Radio Receivers SP-600-JX-21 and SP-600-JX-17, Automatic Volume
Control Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radio Receivers SP-600-JX-21 and SP-600-JX-17, Operating
Instructions ..................................
Radio Receivers SP-600-JX-21 and SP-600-JX-17, Alignment. .
Radio Receivers SP-600-JX-21 and SP-600-JX-17, Variable-Frequency
Heterodyne Oscillator Alignment .
Radio Receivers SP-600-JX-21 and SP-600-JX-17, Radio-Frequency
Tuner Alignment .
Radio Receivers SP-600-JX-21 and SP-600-JX-17, Tuning Meter
Adjustment .............................•.........
Radio Receivers SP":600-JX-21 and SP-600-JX-17, 750-Hour
Inspection .......................'.':' . . ~ ............
LIST
OF ILLUSTRATIONS
Title
Page
•
11
I
27
33
39
45
49
55
59
71
79
89
95 I
Page
1-1
1-2
1-3
2-1
2-2
2-3
2-4
2-5
2-6
Deleted
Deleted
Radio Receivers SP-600-JX-21 and SP-600-JX-17, Bottom View .
Radio Receiver SP-600-JX-17, Top View .
Radio Receiver SP-600-JX-21, Top View of R-F Section .
Radio Receiver SP-600-JX-21, Top View of R-F $ection ......•....
Radio Receiver SP-600-JX-17, Top View .
Radio Receiver SP-600-JX-21, Top View of R-F Section .
Radio Receiver SP-600-JX-17, Top View .
12
61
64
74
75
82
83
I
Revised 27 January 1961

Introduction
1. PURPOSE
T. O. 31R2-4-18-16
INTRODUCTION
This handbook establishes standardized work methods and simplified step-by-step job
instructions for the preventive maintenance of this equipment. The individual job in-
structions, in the form of "Routines, " are presented simply and logically to permit
their ready use by maintenance personnel. Adequate performance standards are in-
cluded.
2. SCOPE
These job instructions are applicable to and will be used by all activities maintaining the
equipment.
3. SPECIAL INSTRUCTIONS
This handbook will be used as a portion of the standardized communications electronics
maintenance inspection system. Personnel using this handbook shall notify supervisory
personnel immediately if satisfactory performance cannot be obtained.
ii

T. O. 31R2-4-18-16
Schedule
SCHEDULE FOR ACCOMPLISHMENT OF ROUTINES
(Intervals are in days,
for example "30" means "every thirty days. ")
CONTINUOUS OPERATION
TACTICAL OPERATION STANDBY OPERATION
Q) Q) Q)
.....
.....
.....
e<J e<J e<J
... ...
...
Q) uu
.....
Q)
u.
~
.....
Q) uU
0.
'0,
...
0.
...
0.
. ~
...
S
.....
Q) S
.....
0.
Q) S
.....
0.
Q)
Routine
u0
rn
u0
rn u0
rn
Q)
...
...
Q) Q)
~
...
~
Q)
~
...
Q)
Number
E-<
<t:
E-<
Cl E-<
E-< E-<
E-<
Cl
1. 1(6)
Deleted
I
1. 2(6) 77 5 5 7 7 5 5
30 30 15 10
1. 3(2)
Deleted
I
1. 4(3)
Deleted
1. 5(6) 7 7 5 5 7 7 5 5
30 30 15 10
L6(6) 7 7 5 5 7 7 5 530 30 15 10
1. 7(9) 7 7 5 5 7 7 5 5
30 30
15 10
1. 8(6) 7 7 5 5 7 7 5 5
30 30 15
10
1. 9(15) 7 7 5 5 7 7 5 5
30 30 15
10
2. 1(5) ** * * * * * * * * **
2. 2(5) * * * ** * * * * * * *
2. 3(5) * * * ** * * * * * * *
2.4(5)
* * * ** * * * * ** *
2. 5(5) ** * * * * * * * * * *
3. 1(1)
30 30 30
30
30 30 30
30
60 60
30 30
I
* Accomplishment to be directed by maintenance supervisor
Revised 27 January 1961
iii-iv

Revised 27 January 1961
T. O. 31R2-4-18-16
PERFORMANCE TEST -RADIO RECEIVERS
SP- 600- JX- 21 AND SP- 600- JX-1 7
Routine 1. 1(6), original pages 1 thru 10, deleted
SECTION I
ROUTINE 1. 1 (6)
1 thru 10

T. O. 31R2-4-18-16
PERFORMANCE TEST -RADIO RECEIVERS SP-600-JX-21 AND
SP-600-JX-17, POWER SUPPL Y
1. GENERAL INFORMATION
SECTION I
ROUTINE 1. 2(6)
a.
The purpose of this routine is to determine if the power supply of Radio Receiver
SP-600-JX-21 or Radio Receiver SP-600-JX-17 is operating properly.
b. The approximate time required to do this routine is 1-1/2 man-hours.
c. Report all indications that are not within tolerance to the maintenance supervisor
for corrective action.
2. TEST EQUIPMENT REQUIRED
~. Multimeter AN/PSM-6
3. MATERIAL REQUIRED
a. Screwdriver
b. Resistor, 600-ohm, 2-watt, non-inductive
4. PROCEDURE
a. Preliminary Procedure
(1) Disconnect the power line plug of the radio receiver from the power source.
(2) Disconnect the loudspeaker from the AUDIO OUTPUT terminals.
(3) Disconnect the BFO, IFO, DIODE OUTPUT and AVC leads from their respective
terminals.
(4) Disconnect the antenna cable from the antenna input connector.
(5) Remove the eight screws holding the radio receiver in the relay rack and remove
the receiver from the rack.
(6) Loosen the four thumb screws holding the top cover to the radio receiver and re-
move the cover. .
(7) Set the radio receiver on its side. Remove the seven machine screws holding the
bottom plate to the radio receiver and remove the plate.
(8) Insert the power line plug of the radio receiver into the 115-volt, 60-cycle power
source.
(9) Connect the 600-ohm, 2-watt resistor between the AUDIO OUTPUT terminals on
the rear of the radio receiver.
(10) Set the FUNCTION switch on Multimeter AN/PSM-6 to the DCV-20K Q /V position.
(11) Set the RANGE switch on Multimeter AN/PSM-6 to the Qx 10000/500 position.
(12) Insert the red test lead into the red jack of the multimeter and the black test lead
into the black jack of the multimeter.
(13) Slip a red alligator clip over the red test prod point and a black alligator clip
over the black test prod point.
(14) Connect the black test lead to the receiver chassis and the red test lead to the
junction of L-51, L-52, and C-161B (figure 1-3).
11

SECTION I
ROUTINE .1. 2(6)
T. O. 31R2-4-18-16
JUNCTION 0
R95,R96
0
EJ
\_~ '-~
0D
000
0 0
PIN 4
TUBE
V-I?
0°
O·~'----------,
JUNCTION
R93,R94
JUNCTION
CI61B
L51,L52
PIN I
TUBE
V-IS
JUNCTION
CI60
R92,R93
Figure 1-3. Radio Receivers SP-600-JX-21 and SP-600-JX-17, Bottom View
b.
Measure the output voltages of the radio receiver power supply as follows:
(1) Rotate the RF GAIN control on the radio receiver clockwise from the OFF
position to 10. The indication on the multi meter should be between 270 and
290 volts.
WARNING
When the RF GAIN control is not in the OFF
position, dangerous voltages are present in
the unit under test. In succeeding steps of
this routine, observe all safety precautions
when this control is not set to OFF.
(2) Rotate the RF GAIN control counterclockwise to O. The indication on the
multimeter should be between 295 and 315 volts.
(3) Rotate the RF GAIN control on the radio receiver counterclockwise to the OFF
position.
(4) Set the RANGE switch on the multimeter to the nx 1000/250 position.
(5) Remove the red test lead from the junction of L-51, L-52, and C-161B and
connect it to pin 4 of tube V-17 (figure 1-3).
(6) Rotate the RF GAIN control on the radio receiver clockwise from the OFF position
to 10. The indication on the multi meter should be between 220 and 235 volts.
(7) Set the RANGE switch on the multimeter to the nx 10000/500 position.
(8) Rotate the RF GAIN control on the radio receiver counterclockwise to O. The
indication on the multi meter should be between 255 and 275 volts.
(9) Rotate the RF GAIN control on the radio receiver counterclockwise to the OFF
position.
(10) Set the RANGE switch on the multimeter to the nx 1000/250 position.
12

T. O. 31R2-4-18-16
SECTION I
ROUTINE 1. 2(6)
(11) Remove the red test lead from pin 4 of tube V -17 and connect it to pin 1 of tube
V-18 (figure 1-3).
(12) Rotate the RF GAIN control on the radio receiver clockwise from the OFF
position to O. The indication on the multimeter should be between 145 and 155
volts.
(13) Rotate the RF GAIN control on the radio receiver counterclockwise to the OFF
position.
(14) Remove the red test lead from pin 1 of tube V -18 and connect it to the radio
receiver chassis (ground). Remove the black test lead from the radio receiver
chassis (ground) and connect it to the junction of C-160, R-92, and R-93 (figure
1-3).
(15) Rotate the RF GAIN control on the radio receiver clockwise from the OFF position
to O. The indication on the multimeter should be between 50 and 53 volts"
(16) Rotate the RF GAIN control on the radio receiver counterclockwise to the OFF
position.
(17) Set the RANGE switch on the multimeter to the nx 100/50 position.
(18) Remove the black test lead from the junction of C-160, R-92, and R-93 and con-
nect it to the junction of R-95 and R-96 (figure 1-3).
(19) Rotate the RF GAIN control on the radio receiver clockwise from the OFF position
to O. The indication on the multimeter should be between 9. 5 and 10. 5 volts.
(20) Rotate the RF GAIN control on the radio receiver counterclockwise to the OFF
position.
(21) Set the RANGE switch on the multimeter to the nx 1/25 position.
(22) Remove the black test lead from the junction of R-95 and R-96 and connect it to
the junction of R-93 and R-94 (figure 1-3).
(23) Rotate the RF GAIN control on the radio receiver clockwise from the OFF
position to 10. Set the AVC-MAN switch on the radio receiver to the MAN
position. The indication on the multimeter should be between 0.95 and 1. 0
volt.
(24) Rotate the RF GAIN control on the radio receiver counterclockwise to the OFF
position.
c. Concluding Procedure
(1) R~move the multimeter test leads from the radio receiver.
(2) Remove the 600-ohm, 2-watt resistor from the radio receiver AUDIO OUTPUT
terminals.
(3) Disconnect the power line plug of the radio receiver from the power source.
(4) Replace the bottom plate on the radio receiver and tighten the seven machine
screws.
(5) Replace the top cover of the radio receiver and tighten the four thumb screws.
(6) Place the radio receiver in the relay rack and tighten the eight holding screws.
(7) Connect all the cables and wires to their respective terminals on the rear of the
radio receiver.
(8) Insert the power line plug of the radio receiver into the 115-volt, 60-cycle
power source.
13-14

T. O. 31R2-4-18-16
PERFORMANCE TEST -RADIO RECEIVERS SP-600-JX-21 AND
SP-600-JX-17, SENSITIVITY
Routine 1. 3(2), original pages 15 thru 20, deleted
Revised 27 January 1961
SECTION I
ROUTINE 1. 3(2)
15
thru 20

T. O. 31R2-4-18-16
PERFORMANCE TEST -RADIO RECEIVERS SP-600-JX-21 AND
SP-600-JX-17, SELECTIVITY
Routine 1. 4(3), original pages 21 thru 26, deleted
Revised 27 January 1961
SECTION I
ROUTINE 1. 4(3)
21 thru 26

T. O. 3lR2-4-18-16
SECTION I
ROUTINE 1. 5(6)
PERFORMANCE TEST -RADIO RECEIVERS SP-600-JX-21 AND SP-600-JX-17,
INTERMEDIATE-FREQUENCY REJECTION RATIO
1. GENERAL INFORMATION
a. The purpose of this routine is to check the rejection ratio of the intermediate-
frequency stages of Radio Receiver SP-600-JX-21 or SP-600-JX-17.
b. The approximate time required to do this routine is 2 man-hours.
c. Raport all indications that are not within tolerance to the maintenance supervisor
for corrective action.
2. TEST EQUIPMENT REQUIRED
a. Signal Generator AN/URM-25
b. Electronic Multimeter TS- 505( )/ U
3.
MATERIAL REQUIRED
a. Screwdriver
b. Soldering iron
c. Resistor, 600-ohm, 2-watt, non-inductive
d. Resistors, 121-ohm, 1/2-watt, non-inductive, two
e. Black test lead
f. Two alligator clips
.!:f. Connector plug PL-259
h. Connector plug UG-I02/U
i. One 30-inch length of RG-22/ U cable
.:L- One 30-inch length of RG- 59/ U cable
k. Ante
I1
na test cable for Radio Receiver SP-600-JX-21 fabricated as follows:
(1) Remove 1-1/ 8 inches of outer insulation from both ends of the RG-22/ U cable
and cut the braid back 3/4 inch.
(2) Strip 5/8 inch of insulation from both conductors and tin the exposed conductors
and braid.
(3) Disassemble the connector plug, UG-I02/ U, and slide the coupling ring on the
cable. Screw the back shell to the cable, aligning the solder hold with the
conductors.
(4) Assemble the front shell to the back shell so that both solder holes are in line.
(5) Solder the braid to the shells through the solder holes and solder the conductors
to the contacts.
(6) Screw the coupling ring to the back shell.
(7) Strip 5/8 inch of insulation from the center conductors on the other end of the
cable.
27

SECTION I
ROUTINE 1. 5(6) T.
O. 3lR2-4-18-16
(8) Solder a 121-ohm, 1/2-watt resistor between the two conductors.
I28
1. Antenna test cable for Radio Receiver SP-600-JX-17 fabricated as follows:
(1) Remove 1-1/8 inches of outer insulation from both ends of the RG-59/U cable
and cut the braid back 3/4 inch.
(2) Strip 5/8 inch of insulation from the center conductor and tin the exposed conductor
and braid.
(3) Disassemble the connector plug, PL-259, and slide the coupling ring on the cable.
Screw the plug subassembly to the cable.
(4) Solder the braid to the assembly through the solder hole and solder the center
conductor to the contact.
(5) Screw the coupling ring to the plug subassembly.
(6) Unravel the exposed braid at the other end of the cable and twist it to form a lead.
Strip 5/8 inch of insulation from the center conductor.
(7) Solder a 121-ohm, 1/2-watt resistor between the center conductor and the braid.
4. PROCEDURE
a. Preliminary Procedure
(1) Disconnect the power line plug of the radio receiver from the power source.
(2) Disconnect the loudspeaker from the AUDIO OUTPUT terminals.
(3) Disconnect the antenna cable from the antenna input connector.
(4) Disconnect the BFO, IFO, DIODE OUTPUT, and AVC connections from their
respective terminals.
(5) Remove the eight screws holding the receiver in the relay rack and remove the
receiver from the rack.
(6) Loosen the four thumb screws holding the top cover to the radio receiver and
remove the cover.
(7) Insert the power line plug of the radio receiver into the 115-volt, 60-cycle power
source.
(8) Connect the 600-ohm, 2-watt resistor between the AUDIO OUTPUT terminals on
the rear of the radio receiver.
(9) Insert the power line plug of the Electronic Multimeter TS-505( )/U into the
115-volt, 60-cycle power source.
(10) Connect the black test lead to the COMMON binding post on the multimeter.
(11) Connect an alligator clip to the other end of the black test lead and clip the lead
to one side of the 600-ohm resistor connected across the AUDIO OUTPUT
terminals on the rear of the radio receiver.
(12) Connect an alligator clip to the a-c probe of the multimeter and clip the probe
to the other side of the 600-ohm resistor.
(13) Set the RANGE switch on the multimeter to the 4V/ R x 10 position.
(14) Set the FUNCTION switch on the multimeter to the A. C. position and allow 3
minutes for the multimeter to warm up.
(15)
Set up Signal Generator AN/URM-25( ) to deliver an unmodulated O. 6-mega-
cycle r-f signal. Set up Signal Generator AN/URM- 25 as follows:
Revised 27 January 1961

T. O. 31R2-4-18-16
SECTION I
ROUTINE 1. 5(6)
@.) Insert the female plug of the power line into the socket located on the lower
left corner of the signal generator front panel.
Q?) Insert the male plug of the power line into a 115-volt, 60-cycle power
source.
(~) Rotate the CARRIER CONTROL and the %MODULATION control on the
signal generator fully counterclockwise.
@ Set the FREQUENCY BAND SWITCH to the Band D position.
~) Set the CARRIER RANGE switch on the signal generator to the DEFG position.
(!-) Rotate the signal generator tuning dial until an indication of O. 6 megacycle
is obtained on the frequency and vernier dials.
(~) Set the MOD SELECTOR switch on the signal generator to the OFF position.
(~) Set the METER READS switch on the signal generator to the RF position.
(!J Set the POWERON-OFF switch to the ON position and allow 15 minutes for the
signal generator to warm up.
(16)
Connect the antenna test cable to the antenna input connector of the receiver.
(17) Connect the antenna test cable to the signal generator as follows:
@.) Connect one end of the 121-ohm resistor to the center contact of the signal
generator X MULT RF OUTPUT jack.
Q?) Connect the other end of the 121-ohm resistor to ground terminal G.
(18) Set up Radio Receiver SP-600-JX-21 for the reception of an amplitude-modulated
signal as follows:
(~) Set the SEND-REC switch to the REC position.
Q?) Set the FREQ CONTROL switch to the VFO position.
(~) Set the LIMITER-OFF switch to the OFF position.
@ Set the AVC-MAN switch to the MAN position.
(19) Set up Radio Receiver SP-600-JX-17 for the reception of an amplitude-modulated
signal as follows:
(~) Set the SEND-REC switch to the REC position.
Q?) Set the IFO switch to the INT position.
(~) Set the HFO switch to the VAR position.
(~) Set the LIMITER-OFF switch to the OFF position.
~) Set the AVC-MAN switch to the MAN position.
b. Check the 455-kilocycle i-f rejection ratio as follows:
(1) Rotate the RF GAIN control on the radio receiver clockwise from the OFF
position to O.
WARNING
Dangerous voltages are present in the unit under
test. Observe all safety precautions.
29

SECTION I
ROUTINE 1. 5(6)
T. O. 31R2-4-18-16
(2) Set the MOD-CW switch on the radio receiver to the MOD position.
(3) If this check is being performed on Radio Receiver SP-600-JX-17 set the BFO-
AVC switch to the INT BFO - FAST position.
(4) Rotate the MICROVOLTS control on the signal generator fully clockwise.
(5) Set the MULTIPLIER switch on the signal generator to the. 1 position and adjust
the CARRIER CONTROL until an indication of 100 is obtained on the signal gen-
erator output meter.
(6) Set the SELECTIVITY switch on the radio receiver to the 3 NON-XTAL position
and adjust the signal generator MICROVOLTS control until an indication of 20
is obtained on the upper scale of the signal generator output meter.
(7) Set the MOD SELECTOR switch on the signal generator to the 400 cycle position
and the METER READS switch on the signal generator to the %MOD position.
(8) Adjust the %MODULATION control on the signal generator until an indication
of 30 is obtained on the lower scale of the signal generator output meter.
(9) Set the METER READS switch on the signal generator to the RF position and
rotate the radio receiver RF GAIN control fully clockwise.
(10) Set the BAND CHANGE switch on the radio receiver until the indication O. 54 -
1. 35 appears in the MEGACYCLES window.
(11) Adjust the radio receiver TUNING control until an indication of 0.6 megacycle
is obtained on the main tuning and vernier dials.
(12) Set the RANGE SWITCH on the multimeter to the 4V/R x 10 position and adjust
the AUDIO GAIN control on the radio receiver until an indication of 2.45 volts
is obtained on the multimeter.
(13) Rotate the CARRIER CONTROL on the signal generator fully counterclockwise
and the MICROVOLTS control on the signal generator fully clockwise.
(14) Rotate the signal generator tuning dial until an indication of 0.455 megacycle
is obtained on the frequency and index scales.
(15) Set the MULTIPLIER switch on the signal generator to the 10 position and ad-
just the CARRIER CONTROL on the signal generator until an indication of 100
is obtained on the signal generator output meter.
(16) Adjust the MICROVOLTS control until an indication of 66. 7 is obtained on the
upper scale of the signal generator output meter. The indication on the multi-
meter should be between 2. 3 and 2. 6 volts.
c Check the 3955-kilocycle intermediate-frequency rejection ratio as follows:
(1) Rotate the CARRIER CONTROL on the signal generator fully counterclockwise
and the MICROVOLTS control on the signal generator fully clockwise.
(2) Set the signal generator FREQUENCY BAND SWITCH to the Band F position.
(3) Set the MOD SELECTOR switch on the signal generator to the OFF position.
(4) Rotate the signal generator tuning dial until an indication of 7.6 megacycles
is obtained on the frequency and index scales.
(5) Set the MULTIPLIER switch on the signal generator to the. 1 position and adjust
the CARRIER CONTROL on the signal generator until an indication of 100 is ob-
tained on the signal generator output meter.
(6) Adjust the MICROVOLTS control on the signal generator until an indication of
20 is obtained on the upper scale of the signal generator output meter.
30