TM 11-6125-238-35

D E P A R T M E N T O F T H E A R M Y T E C H N I C A L M A N U A L

FIELD AND DEPOT MAINTENANCE MANUAL

INVERTER, VIBRATOR PP-1703/U

Headquartors, Department of the Army, Washington 25, D.C.

2 December 1963

WARNING

DANGEROUS VOLTAGES EXIST IN THIS EQUIPMENT

Be careful when working on the 115-volt ac outputcircuit. Serious injury or death may result from con-tact with its terminals. Never connect or disconnectthe input cable with the POWER switch in the ON posi-tion.

DON’T TAKE CHANCES!

Paragraph

C H A P T E R 1 . FUNCTIONING OF PP-1703/UScope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Functioning of equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Input circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Output circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C H A P T E R 2 . TROUBLESHOOTINGTroubleshooting procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . .Test equipment required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Troubles hooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Resistance measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Replacement of parts.... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C H A P T E R 3 . FOURTH ECHELON TESTING PROCEDURESGeneral . . . . . . . . . . . . . . . . . . . . . . . . . . . Test equipment and materials . . . . . . . . . . . . . . . . . . . . . . . . . . . .Physical tests and inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . .Operational tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C H A P T E R 4 . DEPOT INSPECTION STANDARDSApplicability of depot inspection standards . . . . . . . . . . . . . . . . . . . .Applicable references . . . . . . . . . . . . . . . . . . . . . . . . . . .Test facilities required . . . . . . . . . . . . . . ... . . . . . . .Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A P P E N D I X

1234

56789

10111213

14151617

REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page

2234

55667

10101113

1515151517

1

CHAPTER 1

FUNCTIONING OF PP-1703/U

1. Scope

a. Thisfield andVibrator

manual contains instructions fordepot maintenance for Inverter,PP-1703/U. It includes instruc-

tions appropriate to third, fourth, andfifth echelons for troubleshooting, testing,repairing the equipment, and replacingmaintenance parts. It also lists materialsand test equipment for third, fourth, andfifth echelon maintenance.

b. Throughout this manual, Inverter,Vibrator PP-1703/U is referred to asinverter.

c. The complete technical manual forthis equipment includes TM 11-6125-238-12.

d. The direct reporting, by the individualuser, of errors, omissions, and recom-mendations for improving this equipmentmanual is authorized and encouraged. DAForm 2028 will be used for reportingthese improvements. This form may becompleted using pencil, pen, or type-writer. DA Form 2028 will be completedin triplicate and forwarded by the indi-vidual using the manual. The original andone copy will be forwarded direct to:Commanding Officer, U. S. Army Elec-tronics Materiel Support Agency, ATTN:SE LMS-MP, Fort Monmouth, New Jersey,07703. One information copy will be fur-nished to the individual’s immediate su-pervisor (of f icer , noncommissionedofficer, supervisor, etc).

Note: For other applicable forms and records, seeparagraph 3, TM 11-6125-238-120.

e. Refer to the latest issue of DA Pam310-4 to determine whether there are neweditions, changes, or additional publica-tions pertaining to this equipment. Depart-ment of the Army Pamphlet No. 310-4 isan index of current technical manuals,technical bulletins, supply bulletins, lubri-cation orders, and modification workorders available through publications sup-ply channels. The index lists the individualparts (-10, -20, -35P, etc) and the latest

2

changes to and revisions of each equipmentpublication.

2. Functioning of(fig. 1)

a. General.(1)

(2)

Inverter,portable

Equipment

Vibrator PP-1703/U is aunit which converts pri-

mary power (24-, 26-, 28-, or 30-volt storage battery) to 115 voltsalternating current (ac) at 60cycles per second (cps) by use ofa vibrator and a step-up powertransformer with a center-tappedprimary. The vibrator mechanismis an interrupter or high-speedreversing switch that automatic-ally opens and closes sets of con-tacts by m a g n e t i c action whendirect-current (dc) power is ap-plied to it. The vibrator changesthe pure dc from the storage bat-tery into pulsating dc by a drivercontact (pin 2) and two pairs ofpower or interrupter contacts (pins1 and 6). The driver contact (pin2) operates the flexible reed (orarmature) in the same manner asan electrical buzzer. The powercontacts (pins 1 and 6) connect oneterminal of the storage battery al-ternately to one end of the center-tapped primary of transformer T1and then to the other. The centertap is connected through switch S1to the other terminal of the storagebattery.This automatic and rapid switchingof storage battery connections tothe primary of T1 produces pulsesof current through opposite halvesof the primary. These currentpulses flow in alternate directionsthrough the primary because of theaction of the power contacts that

Figure 1. Inverter, Vibrator

interrupt and switch the currentflow. This interruption and rever-sal of primary current causes acorresponding changing magneticfield around the primary that in-duces an alternating voltage in thesecondary. Because of the trans-former step-up ratio, the inducedac voltage in the secondary is manytimes greater than the primaryvoltage.

b. Driver Contact. The vibrator actuat-ing coil and the transformer T1 primaryare in separate circuits. The actuatingcoil is in series with the driver contact.When POWER switch S1 is at the Opposi-tion (closed), the actuating coil is ener-gized and magnetically pulls the reed awayfrom the driver contact. This opens thedriver contact and deenergizes the actuat-ing coil. The vibrating reed then springsback, closes the driver contact, and againenergizes the actuating coil. The electricaland physical characteristics of these com-ponents (especially the physical dimen-sions and weight of the vibrating reed) aresuch that the vibrating reed repeats thiscycle and vibrates at a rate of 60 cps.

c. Power or Interrupter Contacts. Whenthe vibrating reed is pulled toward theactuating coil, one pair of power contacts(pin 1) is closed. This completes the dc

PP-11703/U, schematic diagram.

circuit through one transformer section(pins 2 and 3), and a pulse of current flows.When the vibrating reed is released, itbreaks this circuit and springs back to theopposite pair of power contacts (pin 6).This completes the dc circuit through theother transformer section (pins 1 and 2),and a pulse of current flows through theother half of the transformer primary.

d. Transformer. Regardless of the po-larity of the battery clips, current flowsthrough the primary of the transformerfirst in one direction and then in the op-posite direction as the vibrator closes thealternate pairs of power contacts. Thesealternating pulses through the primaryproduce an alternating output in the sec-ondary. Because the reed vibrates at ap-proximately 60 cps, the output frequencyis approximately 60 cps. The output volt-age waveform is approximately a squarewave.

3. Input Circuit(fig. 1)

a. Actuating Coil. The actuating coilcircuit extends from clip lead A, throughPOWER switch S1, terminal 3 of vibratorG1, the actuating coil, the driver contact,the vibrating reed, and fuse F1, to cliplead B. The circuit is closed when POWER

3

switch S1 is set to the ON position, and isinterrupted 60 times per second by themaking and breaking of the driver con-tact.

b. Primay of Transformer T1. Thereare two branch circuits through the pri-mary of T1; one through the upper half(pins 1 and 2), the other through the lowerhalf (pins 2 and 3). One branch extendsfrom clip lead A, through S1, terminal 2(the center tap) of T1, terminal 1 of Tl,choke coil L1, pin 6 of vibrator G1 and itspaired power contacts, the vibrating reed,and fuse Fl, to clip lead B. The otherbranch is similar except that it extendsfrom clip lead A, through S1, terminal 2of Tl, terminal 3 of T1, choke coil L2,pin 1 of vibrator G1 and its paired powercontacts, the vibrating reed, and fuse F1,to clip lead B. Current flows alternatelyin the upper (pins 1 and 2) and lower (pins2 and 3) sections of transformer T1 whenthe vibrating reed makes contact with theupper and lower power contacts of vibra-tor G1. This occurs 60 times per secondfor each pair of contacts. Capacitor C8(buffer capacitor) is across the primaryof T1 to limit the sharp peaks that other-wise would be produced when the powercontacts open. This prevents arcing and aresulting pitting of the power contacts.

c. Input Circuit Filters.(1)

(2)

(3)

(4)

Capacitor C4 filters out radiofrequency (rf) hash from acrossthe input leads.Capacitors Cl and C2 filter out rfhash from across each of the clipleads (A and B) and chassis ground.Capacitors C5 and C6 reduce rfhash across the upper and lowerpairs of vibrator contacts (pins 6and 1).Choke coil L1 keeps rf hash outof the upper half (pins 1 and 2) ofthe primary of Tl; choke coil L2keeps rf hash out of the lower half(pins 2 and 3) of the primary of T1.

(5) Capacitor C3 and resistor R1 pre-vent arcing across the vibratordriver contact.

4. Output Circuit(fig. 1)

a. Output Circuit Theory. The 60-cpspulses applied to the primary of trans-former T1 produce a 60-cps, 115-volt acvoltage in the secondary of T1. The sec-ondary of T1 is switched by OUTPUT ADJ.switch S2 to keep the output voltage con-stant for an input power source of 24, 26,28, or 30 volts, as follows:

(1)

(2)

(3)

(4)

For an input power source of’ 24volts, S2 is set to position 4, thesecondary winding of T1 is pins 4and 8, and the output power is 80watts maximum.For an input power source of 26volts, S2 is set to position 3, thesecondary winding of T1 is pins 4and 7, and the output power is 67watts maximum.For an input power source of 28volts, S2 is set to position 2, thesecondary winding is pins 4 and 6,and the power output is 53 wattsmaximum.For an input power source of 30volts, S2 is set to position 1, thesecondary winding is pins 4 and5, and the output power is 40 wattsmaximum.

b. Output Circuit Filters. Capacitor C9(buffer capacitor) is across the secondaryof T1 to limit the sharp peaks that other-wise would be produced when the powercontacts open. This prevents arcing and aresulting pitting of the power contacts.Capacitors C10A and C10B prevent rfhash from being applied across the ter-minals of POWER OUT receptacle J1.The junction of these two capacitors C10Aand C10B is connected to chassis groundto prevent rf potentials from being pet upbetween either output lead and chassis.

4

CHAPTER 2

TROUBLESHOOTING

Warning: When servicing Inverter, Vibrator PP-1703/U, be extremely careful ofhigh voltages. Always disconnect the input cable from the storage battery before makingany repairs or resistance checks.

5. Troubleshooting Procedures

a. General. The first step in servicinga defective inverter is to localize the fault.Localization means tracing the fault to adefective part responsible for the abnor-mal condition. Some faults, such as burned-out resistors, arcing, or shorted trans-former, and burned-out or stuck vibrator,can often be located by sight, smell, andhearing. The majority of faults, however,must be isolated by checking resistances.

b. Localization. The tests listed belowaid in isolating the source of trouble. Tobe effective, the procedure should be fol-lowed in the order given. First, troubleshould be localized to a single circuit;then the trouble may be isolated within thatcircuit by appropriate resistance meas-urements. The service procedure is sum-marized as follows:

(1)

(2)

(3)

(4)

Inspection. The purpose of inspec-tion is to locate any visible trouble.Through this inspection alone, therepairman frequently may dis-cover the trouble or determine thecircuit in which the trouble exists.This inspection is valuable inavoiding additional damage to theinverter that could occur throughimproper servicing methods.Resistance measurements. R e -sistance measurements (para 8)may prevent further damage to theinverter from possible short cir-cuits caused by faulty components.Troubleshooting chart. The trou-ble symptoms listed in the trou-bleshooting chart (para 7) provideadditional information for localiz-ing trouble.Intermittent troubles. In all of thetests, the possibility of intermit-

(5)

tent troubles should not be over-looked. If present, this type of trou-ble often may be made to appear bytapping or jarring the equipment.Resistor and capacitor color-codeMagrams. Resistor and capacitorcolor-code diagrams (fig. 4 and 5)are provided to aid maintenancepersonnel in determining the value,voltage rating, and tolerance ofcapacitors and resistors.

c. General Precautions. Whenever theinverter is serviced, observe the followingvery carefully:

(1)

(2)

(3)

(4)

(5)

(6)

When the chassis assembly is re-moved from the case, points havingdangerous voltages are exposed.Careless replacement of partsoften cause additional faults.Before a part is unsoldered, notethe position of the leads. If thepart such as a transformer has anumber of connections, tag each ofits leads.Be careful not to damage otherleads; pull or push them out of theway.Do not allow drops of solder to fallinto the chassis, because they maycause short circuits.A carelessly soldered connectionmay create a new fault. It is veryimportant to make well-solderedjoints, because a poorly solderedjoint is one of the most difficultfaults to find.

6. Test Equipment Required

The test equipment required for trouble-shooting Inverter, Vibrator PP-1703/U isas follows:

5

NomencIatureI

F e d e r a l T e c h n i c a ls tock No. manual

Multimeter TS-352/UDummy load (4):

164-ohm, 250-wattr e s i s t o r

194-ohm, 250-wattr e s i s t o r

248-ohm, 250-wattr e s i s t o r

330-ohm, 250-wattr e s i s t o r

6625-242-5023 TM 11-5527

7. Troubleshooting

Caution: If a proper wattage load is notavailable, use the following valued re-sistors as a dummy load when trouble-shooting the PP-1703/U With voltage ap-plied.

I tem

1

2

3

4

5

I n d i c a t i o n

Vibrator G1 does not operate----

Fuse F1 (7. 5-ampere, Federalstock No. 5920-280-8600)burned out.

Output voltage low (less than 110volts ac).

O U T P U T A D J .I

Pr imer powerI

Dummy loads w i t c h p o s i t i o n (vol ts dc) (ohms)

1 30 333 (250 watts)2 28 248 (250 watts)3 26 194 (250 watts)4 24 164 (250 watts)

a. General. The troubleshooting chart(b below) is supplied as an aid in locatingtrouble in the inverter. When the troublehas been localized to a circuit, resistancemeasurements of this circuit should besufficient to isolate the defective part.Normal resist a n c e measurements aregiven in paragraph 8. Perform the checksin the order listed in the chart below. Wheneach check is performed, it is assumed thatall previous troubles have been corrected.

b. Troubleshooting Chart.

Probable t rouble

Poor battery contacts ----------

Fuse F1 burned out------------Vibrator G1 not properly seated

in socket.

Vibrator defect ive - - - - - - - - - - - - -

Capacitor C3 shorted ----------

Vibrator G1 defective ----------

Capacitor C4, C5, C6, C7, C8,or C9 shorted.

Defective load circuit ----------

OUTPUT ADJ. switch S2 notproperly set.

Battery not fully charged -------Vibra tor G1 worn - - - - - - - - - - - - -

Coil L1 or L2 or connection isopen.

Output voltage high (above 120 OUTPUT AIM. switch S2 notvolts ac). properly set.

Vibrator hum is heard, but out-put voltage is 0.

OUTPUT ADJ. switch S2 orconnection to S2 is defective.

POWER OUT receptacle J 1 orconnections defective.

Primary or secondary of trans-former T1 open.

Procedure

Clean battery clips and batteryterminals.

Replace fuse.Seat vibrator firmly in socket

Xl (fig. 4, TM 11-6125-238-12).

Replace vibrator (fig. 4,TM 11-6125-238-12).

Replace capacitor C3 (fig. 2).

Replace vibrator G1 (fig. 4,TM 11-6125-238-12).

Replace shorted capacitor (fig.1).

Check load for proper wattagerating.

Set switch S2 properly (para 4a).

Charge or replace battery.Replace vibrator G1 (fig. 4,

TM 11-6125-238-12).Replace L1 or L2, or repair

connection (fig. 2).

Set switch S2 properly (para 4a).

Repair switch S2 connections orreplace switch (fig. 4,TM 11-6125-238-12).

Repair connections or replacePOWER OUT receptacle J1(fig. 1).

Replace T1 (fig. 1).

8. Resistance Measurements b. Disconnect the battery clips from thea. Set POWER switch S1 to OFF. storage battery.

6

F i g u r e 2 . l n v e r t e r , V i b r a t o r P P - 1 7 0 3 / U , b o t t o m v i e w o f c h a s s i s ,

c. Set OUTPUT ADJ. switch S2 to posi-tion 1.

d. Set POWER switch S1 to ON.e. Refer to the lettered test points in

figure 1. The fo11owing approximatepoint-to-point measurements should beobtained:

Points o f measurement I Resistance (ohms)

A to B 100C to D Less than 1E to F 9.5

f. The following measurements onsocket Xl (fig. 4, TM 11-6125-238-12),with vibrator G1 removed, should be ob-tained:

Points of measurement I Resistance (ohms)

1 to 6 33 t o 6 1.53 t o 1 1.51 to chassis ground cc2 to chassis ground .

Points of measurement I Resistance (ohms)

3 to chassis ground 004 to chassis ground m6 to chassis ground m

9. Replacement of Parts

All of the parts in Inverter, VibratorPP-1703/U can be easily reached and re-placed without special procedures, Whenreplacing parts, observe the followingdirections:

a. Tagging Leads. Tagging the leads isessential to insure correct rewiring whena part is replaced. Before unsoldering anyleads, tie together the leads that are at-tached to each part. Use small tags orshort pieces of adhesive tape to identifyall wires in accordance with their num-bered connections. Identify every leadthat is to be removed.

7

b. Parts and Substitutions. When dam- C. Location. Relocation of substitutedaged parts must be replaced, use identical parts may cause vibrator hash and is notparts. If identical parts are not available recommended. Mount the new or replacedand the damaged component is beyond re- part in the same location as that formerlypair, a substitution must be made. The occupied by the damaged part. Fasten allpart substituted must have identical elec- mountings securely.trical properties and must be of equal orhigher voltage and current rating.

8

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9

CHAPTER 3

FOURTH ECHELON TESTING PROCEDURES

10. General

a. Testing procedures are prepared foruse by Electronic Field Maintenance Shopsand Electronic Service Organizations re-sponsible for fourth echelon maintenanceof electronic equipment to determine theacceptability of repaired electronic equip-ment. These procedures set forth specificrequirements that repaired electronicequipment must meet before it is returnedto the using organization. The testingprocedures may also be used as a guide toequipment repaired at third echelon if theproper tools and test equipments are avail-able.

b. Comply with the instructions preced-ing the body of each chart before proceed-ing with the chart. Perform each step insequence. Do not vary the sequence. Foreach step, perform all the actions requiredin the Control Settings columns; then per-form each specific test procedure andverify it against its performance standard.

11. Test Equipment and

The test equipmentquired to perform the

Materials

and materials re-testing procedures

given in this chapter are listed in the fol-lowing chart and are authorized under TA11-17, Signal Field Maintenance Shops, andTA 11-100 (11-17), Allowance of SignalCorps Expendable Supplies for Signal FieldMaintenance Shop, Continental UnitedStates.

Nomenclature

Multimeter TS-352/UOscilloscope

AN/USM-89Dummy Load (4):

164-ohm, 250-wattr e s i s t o r

194-ohm, 250-wattr e s i s t o r

248-ohm, 250-wattr e s i s t o r

333-ohm, 250-wattr e s i s t o r

Federalstock No.

6625-242-50236625-701-5236

Technicalmanual

TM 11-5527TM 11-6625-

328-12

10

11

12. Physicol Tests and Inspections

a. Test Equipment. No test equipment necessary.b. Test Connections and Conditions.

(1) No connections necessary.(2) Remove chassis from its case.

c. Procedure.

1

2

Control settings ITest equipment

None

None

Equipment under test

Control may be in anyposition.

Test procedure

a. Inspect case and chassis for damage, missingparts, and condition of paint.Note: Touchup painting is recommended in lieu of refin-

ishing whenever practical; screwheads, binding posts,receptacles, and other plated parts will not be painted orpolished with abrasives.

b. Inspect control and mechanical assemblies forloose or missing screws, bolts, and nuts.

c. Inspect all connectors, sockets, receptacles,and fuseholders for looseness, damage ormissing parts.

Control mayposition.

be in any a.

b.

Rotate the panel control throughout its limit oftravel.

Inspect dial stops for damage or bending, andfor proper operation.. . .

c. Operate switch - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Performance standard

a. No damage evident or partsmissing. External surfacesintended to be painted willnot show bare metal. Panellettering will be legible.

b. Screws, bolts, and nuts willbe tight; none missing.

c. No loose parts or damage.No missing parts.

a. Control will rotate freely,without binding or excessivelooseness.

b. Stops will operate properly,without evidence of damage.

c. Switch will operate properly.

12

TM 6125-238-35-3

Figure 3. Operational tests, connection diagram.

13

13. Operational Tests

figure 3.

CHAPTER 4

DEPOT INSPECTION STANDARDS

14. ApplicabiIity of DepotInspection Standards

The tests outlined indesigned to measure

this chapter arethe performance

capability of a repaired equipment. Equip-ment that is to be returned to stock shouldmeet the standards given in these tests.

15. Applicable References

a. Repair Standards. Applicable pro-cedures of the Signal Corps depot perform-ing these tests and the general standardsfor repaired electronics equipment, forma part of the requirements for testing thisequipment.

b. Technical Publications. The tech-nical publication applicable to this equip-ment is TM 11-6125-238-12.

c. Modification Work Orders. Performall applicable modification work orderspertaining to this equipment before makingthe tests specified. DA Pam 310-4 listsall available MWO’s.

16. Test Facilities Required

The test equipment and materials re-quired in determining compliance with therequirements of this specific standard aregiven in paragraph 13a.

17. Tests

Perform the tests given in paragraph13 to verify the proper operation of theinverter.

15

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16

APPENDIX

REFERENCES

Following is a list of applicable references available to the field and depot maintenancepersonnel of Inverter, Vibrator PP-1703/U.

DA Pamphlet 310-4 Index of Technical Manuals, Technical Bulletins, Supply Bul-letins, Lubrication Orders, and Modification Work Orders.

T M 9 - 2 1 3 Painting Instructions for Field Use.TM 11-5527 Multimeters TS-352/U, TS-352A/U, and TS-352B/U.TM 11-6125-238-12 Operator’s and Organizational Maintenance Manua1: In-

verter , Vibrator PP-1703/U.TM 11-6625-328-12 Operator’s and Organizational Maintenance Manual: Oscillo-

scope AN/USM-89.TM 38-750 The Army Equipment Record System and Procedures.

17

Figure 4. Color-code marking for MIL STD resistors.

18

By Order of Secretary of the Army:

Official:J. C. LAMBERT,Major General, United States Army,The Adjutant General.

EARLE G. WHEELER,General, United States Army,Chief of Staff.

Dis t r i bu t i on :

Active Army:

D A S A ( 6 )U S A S A ( 7 )C N G B ( 1 )C S i g O ( 7 )C o f T ( 1 )C o f E n g r s ( 1 )C o f S p t S ( 1 )T S G ( 1 )USA CD AGCY (2)U S A M C ( 5 )U S C O N A R C ( 5 )A R A D C O M ( 2 )A R A D C O M R g n ( 2 )OS Maj Comd (3)B a s e C o m d ( 2 )L O G C O M D ( 2 )U S A E C O M ( 7 )USAMICOM (4)U S A S C C ( 4 )MDW (1)A r m i e s ( 2 )C o r p s ( 2 )U S A T C A D ( 2 )USATC Armor (2 )USATC Engr (2 )USATC In f (2 )U S A S T C ( 2 )I n s t l ( 2 ) e x c e p tF t M o n m o u t h ( 6 3 )F t H a n c o c k ( 4 )G E N D E P ( O S ) ( 2 )S ig Sec , GENDEP (5 )S i g D e p ( O S ) ( 1 2 )A D e p ( 2 ) e x c e p t

L e x i n g t o n ( 1 2 )S a c r a m e n t o ( 2 8 )Toby hanna (12)Ft Worth (8)

S v c C o l l e g e s ( 2 )

Br Svc Sch (2) exceptUSMA (2)WRAMC (2)USA Trans Tml Comd (1)Army Tml (1)USAOSA ( 1 )P O E ( 1 )AMS ( 1 )Army Pic Cen (2)USA Mbl Spt Cen (1)USA Elct Mat Agcy (12)Chicago Proc Dist (1)Sig Fld Maint Shops (3)USA Elct RD Actv

Ft Huachuca (2)White Sands (13)

WSMR (5)Yuma PG (2)USA Corps (3)Ft Gordon (5)Ft Huachuca (10)US ASMCOM (1)USAREUR Spt Comd (5)USACECDA, Ft Monmouth (1)

Units org under fol TOE:( 2 c o p i e s e a c h U N O I N D C )11-711-1611-5711-9711-9811-11711-15511-15711-500 (AA-AK) (4)11-55711-58711-59211-597

NG: State AG (3).US AR: None.For explanat ion of abbreviat ions used, see AR 320-50.

21

PIN: 019891-000

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