R-390_serv2_TM11-5820-357-35_1962.pdf

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1、TM 11-5820-357-35 D E P 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 RADIO RECEIVER R-390/URR This copy is a reprint which includes current pages from Changes 1 and 2. H E A D Q U A R T E R S D E P A R T M E N T O F T H E A R M Y 9 MARCH 1962 WARNING

2、 DANGEROUS VOLTAGES EXIST IN THIS EQUIPMENT Be careful when working on the plate power circuits or on the 115/230-volt ac line connections. DONT TAKE CHANCES! WARNING When selenium rectifiers fail, because of burn-out or arc-over, poisonous fumes and compounds are released. The fumes have a strong o

3、dor; they should not be inhaled. Provide adequate ventilation immediately; do not handle the rectifier until it has cooled. Rectifier CR801 in Power Supply PP-621/URR is a selenium rectifier. DEPARTMENT OF THE ARMY TECHNICAL MANUAL TM 11-5820 357-35 C 2 Field and Depot Maintenance Manual RADIO RECEI

4、VER R-390/URR TM 11-5820-357-35 DEPARTMENT OF THE ARMY WASHINGTON, D. C., 1 January 1989 TM 11-5820-357-35, 9 March 1962 is changed as follows: Page 131, paragraph 101i. -50 volts is changed to read -5 volts Page 131. Paragraph 101j is super- seded as follows: j. Increase Signal Generator Output abo

5、ve the reference level by amount indicated on table and then detune the Signal Generator until the diode load voltage again reads (-5) volts. The Bandwidth shall be -IT the specified amount. BANDWIDTH Switch (kc) Specific standard (DB) Deviation (not more than)(kc) 161.5 1203.0 1405.0 16616.0 162019

6、.0 164024.0 Page 135, paragraph 114i. 300 times is changed to read 6 times. 1 By Order of the Secretary of the Army: CARL E. VUONO General, United States Army Chief of Staff Official: WILLIAM J. MEEHAN II Brigadier General, United States Army The Adjutant General DISTRIBUTION: To be distributed in a

7、ccordance with DA Form 12-51 DS/GS requirements for R-390/URR. DEPARTMENT OF THE ARMY TECHNICAL MANUALTM 11-5820-357-35 DEPARTMENT OF THE AIR FORCE TECHNICAL ORDERTO 31R2-2URR-412 C 1 Field and Depot Maintenance Manual RADIO RECEIVER 51-390/URR TM 11-5820-357-35DEPARTMENTS OF THE ARMY AND THE AIR FO

8、RCE TO 31R2-2URR-412WASHINGTON 25, D.C., 25 October 1962 TM 11-5820-357-35 9 March 1962, is changed as follows: Add the following caution in the places listed below: Caution: To prevent damage to the receiver be sure to turn the DIAL LOCK control clockwise until it stops before turning the KILOCYCLE

9、 CHANGE control. Do not force the DIAL LOCK control beyond its normal stops in either direction. Page 38. After chapter heading. Page 77. After chapter heading. Page 101, paragraph 87c, before chart. Page 130. After chapter heading. Page 67, after paragraph 58b(5). Insert the following: Caution: Whe

10、n turning the ZERO ADJ knob, do not force the control beyond its stops. The shaft can be turned to a point at which its end plate is forced off. Page 75, paragraph 71. Add paragraph 71.1 after paragraph 71. 71.1. Adjustment of ZERO ADJ Control Check the adjustment of the ZERO ADJ control as follows:

11、 Caution: When turning the ZERO ADJ control do not force the control beyond its stop. The shaft can be turned to a point at which its end plate is forced off. a. Turn the ZERO ADJ control fully counter- clockwise. Slowly turn the control clockwise and observe the free play. The free play should be a

12、pproximately 1/8 turn (par. 58b(6). b. If there is no free play or if it is excessive, remove the knob. c. With the thumb and forefinger, adjust the shaft for approximately 1/8-turn free play d. Replace the knob so that the stop on the rear of the knob is directly to the right of, and touching the f

13、inger on, the ZERO ADJ control locking washer on the front panel. Tighten the knob. e. Turn the ZERO ADJ control fully clockwise to the stop, and check to see that the clutch gear (fig. 43) is disengaged. Do this by rocking the KILOCYCLE CHANGE control back and forth while observing the reading of t

14、he frequency indicator to see that it does not change f. Turn the ZERO ADJ control fully counterclockwise to the stop and recheck for approximately 1/8-turn free play. g. Repeat the procedures given in b through f above if the free play and clutch disengagement are not as specified. 1 TAGO 6797A-650

15、576 October-42 By Order of the Secretaries of the Army and the Air Force: EARLE G. WHEELER, Official:General, United States Army, Chief of Staff. J. C. LAMBERT, Major General, United Stage Army, The Adjutant General CURTIS E. LEMAY, Chief of Staff, Official:United States Air Force. R. J. PUGH, Colon

16、el, United States Air Force, Director of Administrative Services. Distribution: Active Army: DASA (6)Svc Colleges (2) USASA (2)Br Svc Sch (2) except CNGB (1)USASCS (100) CSigO (5)USMA (2) CofEngrs (1)GENDEP (OS (2) CofT (1)Sig Sec. GENDEP (OS) (5) TSG (1)A Dep (2) except USA Engr CD Agcy (1)Atlanta

17、(None) USA CBR CD Agcy (1)Dep (OS) (2) USA Comm Elct CD Agcy (1)Sig Fld Maint Shops (3) USA Med Svc CD Agcy (1)USAOMC (4) USA Orb CD Agcy (1)WRAMC (1) USA QM CD Agcy (1)USA Trans Tml Comd (1) USA Trans CD Agcy (1)Army Tml (1) USA AD CD Agcy (2)OSA (1) USA Armor CD Agcy (2)POE (1) USA Arty CD Agcy (1

18、)USAEPG (2) USA Inf CD Agcy (1)AFIP (1) USA Intel CD Agcy (1)AMS (1) USA Avn CD Agcy (1)Army Pictorial Cen (2) USA SPWAR CD Agcy (1)EMC (1) USAATBD (1)Yuma Test Sta (2) ARADCOM (2)USASSA (26) ARADCOM Rgn (2)USA Carib Sig Agcy (1) OS Maj Comd (8)USA Sig Msl Spt Agcy (13) OS Base Comd (2)Def Log Svc C

19、an (1) LOGCOMD (2)QMRECOMD (2) MDW (1)USA Strat Comm Comd (4) Armies (2)USA Corps (8) Corps (2)JBUSMC (2) Instl. (2) exceptUnits org under fol TOE: Ft Monmouth (68)(2 copies each except as indicated) USATC AD (2)11-711-11711-587 USATC Engr (2)11-1611-1U11-592 USATC Inf (2)11-5711-16711-597 USATC FA

20、(2)11-8511-500 (AA-AE) (4) USATC Armor (2)11-9811-557 NG: State AG (8); units-army as active army except allowance is one copy to USAR: None . For explanation of abbreviations sec AR 820-50 2 TAGO 6797A *TM 11-5820-357-35 Technical ManualHEADQUARTERS, DEPARTMENT OF THE ARMY WASHINGTON 25, D. C., 9 M

21、ARCH 1962 No. 11-5820-357-35 RADIO RECEIVER R-390/URR Paragraph Page CHAPTER 1.Theory SectionI.General.1,23 II.Theory of Radio receiver R-390/URR.3-304-30 III.Theory of Power Supply PP-621/URR, voltage regulator, filament circuits, and oven heater circuits.31-3730-35 IV.Analysis of mechanical tuning

22、 system.38-4035-37 CHAPTER 2.THIRD ECHELON MAINTENANCE SectionI.General troubleshooting techniques .41-4338 II.Troubleshooting receiver.44-5539-65 III.Repairs.56-7166-72 IV.Adjustments.68-7174,75 Chapter3.FOURTH ECHELONS MAINTENANCE SectionI.Repairs and adjustments.72-7477-90 II.Alignment.75-8291-98

23、 III.Testing procedures.83-9398-123 Chapter4.DEPOT INSPECTION PROCEDURES SectionI.Preparation.99-98130 II.Tests.99-116 131-135 APPENDIX.REFERENCES . 137 INDEX. 165 *This manual, together with TM 11-5820-357-10, 29 December 1960 and TM 11-5820-357-20, 23 March 1961 supersedes TM 11-856, 11 January 19

24、55 including C1, 23 June 1955; C2, 29 September 1955; C3, 19 January 1956; C4, 22 December 1958; and C5. 31 December 1959. 1 CHAPTER 1 THEORY Section I. GENERAL 1. Scope a. This manual covers field and depot maintenance for Radio Receiver R-390/URR. It includes instructions appropriate to third, fou

25、rth and fifth echelons for troubleshooting, testing, aligning, and repairing the equipment, and replacing maintenance parts. It also lists tools, materials, and test equipment for third, fourth, and fifth echelon maintenance. Detailed functions of the equipment are covered in the theory sections. b.

26、 The complete technical manual for this equipment includes seven other publications (appx I). c. Refer to DA Pamphlet 310-4 to determine what changes to or revisions of the publication are current. d. Forward comments concerning this manual to the Commanding Officer, U. S. Army Signal Materiel Suppo

27、rt Agency, ATTN: SIGMS-PA2d, Fort Monmouth, N. J. Note: For applicable forms and records see paragraph 2, TM 11-5820-257-10. 2. Internal Differences in Models During production, modifications were made to the receiver. When these modifications were performed, the subchassis affected were stamped wit

28、h a modification (MOD) number. a. Changes to Rf Gear Train. In unmodified radio frequency (rf) gear trains, the green coded offset gear has the green face to ward the rear of the receiver and is not meshed with the clutch gear. In gear trains stamped MOD 1, the green face is mounted toward the front

29、 of the receiver and is meshed with the clutch gear. b. Changes to Variable Frequency Oscillator Subchassis. Refer to figure 5 for differences between unmodified variable frequency oscillator subchassis and those bearing MOD number 1. c. Changes to Rf Tuning Coils and Transformers. Beginning with rf

30、 subchassis MOD 2, the cores of antenna coils T201 through T206 are made of different material to improve tracking. The cores on tuning circuits Z206, Z212, and Z218 are smaller in size to increase the tuning range of the high-frequency band. Coils or transformers that have identical functions are i

31、nterchangeable for all models, providing that the change is made complete with tuning cores. When a tuning core alone is replaced, the correct one of the two types available must be selected for proper operation of the coil. d. Other Differences. Other changes to the receiver during production are l

32、isted in the chart below. ItemSubchassisNo MODMOD 1MOD 2MOD 3MOD 4 R609, between junction of R604 and R608 Af.18 ohms18 ohmsNot usedNot usedNot used R558If.1 megohm1.2 megohms1.2 megohms1.2 megohms1.2 megohms C246Crystal oscillator 130 uuf120 uuf120 uuf120 uuf120 uuf C439Crystal oscillator Not usedN

33、ot used5, 000 uuf5, 000 uuf5, 000 uuf C440Crystal oscillator Not usedNot used5, 000 uuf5, 000 uuf5, 000 uuf C905Crystal oscillator 150 uuf200 uuf200 uuf200 uuf200 uuf C914Crystal oscillator Not used0.01 uf0.01 uf0.01 uf0.01 uf 3 ItemSubchassisNo MODMOD 1MOD 2MOD 3MOD 4 L903Calibration oscillator Not

34、 used0.5 mh0.5 mh0.5 mh0.5 mh R221Rf27 ohms68 ohms68 ohms68 ohms68 ohms C307Rf1 uuf1 uuf0.75 uuf0.75 uuf0.75 uuf C310Rf1 uuf1 uuf0.75 uuf0.75 uuf0.75 uuf C207Rf22 uuf22 uuf150 uuf150 uuf150 uuf C248Rf24 uuf24 uuf75 uuf75 uuf75 uuf C271Rf24 uuf24 uuf27 uuf27 uuf27 uuf C302Rf24 uuf24 uuf27 uuf27 uuf27

35、 uuf C249Rf56 uuf56 uuf51 uuf51 uuf51 uuf C279Rf56 uuf56 uuf180 uuf180 uuf180 uuf C303Rf56 uuf56 uuf51 uuf51 uuf51 uuf C274Rf510 uuf510 uuf330 uf330 uuf330 uuf C289Rf68uuf68uuf39 uuf39 uuf39 uuf R203Rf100 ohms100 ohms220 ohms220 ohms220 ohms C221B connected between RfTerminals 3 and 5 of T206 Termin

36、als 3 and 5 of T206 Terminals 3 and 5 of T206 Terminals 3 and 5 of T206 Terminals 3 and 5 of T206 C242RfNot usedNot used24 uuf24 uuf24 uuf C343RfNot usedNot usedNot used2,000 uuf2,000 uuf C344RfNot usedNot usedNot usedNot used5,000 uuf R635AfNot used27 ohms27 ohms27 ohms27 ohms C612AfNot usedNot use

37、d8 uf8 uf8 uf Section II. THEORY OF RADIO RECEIVER R-390/URR 3. Block Diagram (fig. 56) Radio Receiver R-390/URR provides for the reception of voice, continuous wave (cw), single- sideband (ssb ), and frequency-shift signals over a frequency range of 0.5 to 32 megacycles (mc). The receiver is a supe

38、r-heterodyne of the multiple- conversion type. Triple conversion is used for the lower frequencies (0.5 to 8 mc), and double conversion is used for the higher frequencies (8 to 32 me). The block diagram shows each stage from antenna input to audio frequency (af) and intermediate frequency (if.) outp

39、ut. A schematic diagram (fig. 74) shows details of the circuits in the same order. a. Antenna Circuits. Radio frequency signals are fed to the receiver from either a balanced or unbalanced antenna. If the balanced antenna input is used, the rf signals pass through one of several antenna transformers

40、 (selection of which is determined by the operating frequency of the receiver) and are fed to first rf amplifier V201. If the unbalanced antenna input is used, the signals are capacitor-coupled to the secondary of the antenna transformers and are applied to first rf amplifier V201. Antenna relay K10

41、1 grounds the antenna input for break-in operation, during calibration and standby operation. b. Calibration Oscillator V901A, Multivibrator V902, and Buffer Amplifier V901B. This circuit supplies a signal at every 100-kilocycle (kc) point within the frequency range of the receiver. The signal for s

42、ynchronizing multi vibrator stage V902 at 100 kc is provided by 1,000-kc calibration- oscillator stage V901A. Buffer-amplifier stage V901B isolates the multivibrator from the loading effects of the rf circuit and increases the strength of the 100-kc harmonics. B+ voltage is fed to the calibration-os

43、cillator circuits only when the FUNCTION switch is in the CAL position. c. Rf Amplifiers. The output of first rf amplifier V201 is coupled to second rf amplifier V202. The gain of the first and second rf amplifiers is controlled manually by the RF GAIN control and automatically by the automatic gain

44、 control (age) voltage. The output of the second rf amplifier (0.5 to 32 mc) is fed to either the first or second mixer (V203 and V204), depending on the MEGACYCLE CHANGE control setting. 4 d. Mixers. (1) First mixer V203 receives heterodyning signals from the second rf amplifier and, in the range o

45、f 0.5 to 8 me, from first crystal oscillator V401. A variable if. signal is produced which has a range of 9 to 18 me. (2) (2)Second mixer V204 heterodynes the first variable if. signals (1) above) and those in the range from 8 to 32 me from second crystal oscillator V402. The range of the second if.

46、 is from 3 to 2 me. This frequency decreases as the input signal frequency increases. (3) Third mixer V205 heterodynes the second variable if. signals (2) above) and those in the range from 3.455 to 2.455 from variable frequency oscillator (vfo) V701. The resulting fixed if. output is always 455 kc. e. If Amplifiers. The 455-kc output signal from the third mixer is applied to first if amplifier V501 either directly or through c