AN-PRC-64A_serv_user_TM11-5820-552-15_1970.pdf

r T M 1 1 - 5 8 2 0 - 5 5 2 - 1 5 DEPARTMENT OF THE ARMY TECHNICAL MANUAL O P E R A T O R , O R G A N I Z A T I O N A L , D S , G S , A N D D E P O T M A I N T E N A N C E M A N U A L I N C L U D I N G R E P A I R P A R T S A N D S P E C I A L T O O L L I S T S RADIO SET AN/PRC-64A This copy is a reprint which includes current pages from Change l. v f HEADQUARTERS, DEPARTMENT OF THE ARMY N O V E M D E R 1 9 7 0 CONDENSED OPERATING INSTRUCTIONS FOR RADIO SET AN/PRC-64A * THE NUMMRS OF STEPS ILLUSTRATION 1 THROUGH t ARE THE SAME AS THE NUMBERS ON THE TO TRANSMIT 1. SET AM CW SWITCH TO CW 2. SET REC SEND SWITCH TO SEND 3. SET LOADING CONTROL lo 1 4. SET IND SENS TO 1 5. HOLD INTERNAL KEY DOWN AND ADJUST LOADING CONTROL FOR MAXIMUM BRIGHTNESS OF ANT INDICATOR LAMP. ADVANCE IND SENS TO 2 OR 3 IF NECES SARY TO SECURE VISIBLE LAMP INDICATION. WHEN BEST LOADING IS ACHIEVED TURN IND SENS TO OFF. KEY MESSAGE. FOR VOICE TRANSMISSION USE MICROPHONE AND SET AM CW SWITCH TO AM. 6. IF NECESSARY TO KEEP VOICE DOWN IN AM MODE SET WHISPER SWITCH TO IN. TO RECEIVE 2. SET REC SEND SWITCH TO REC 7. SET GAIN CONTROL TO DESIRED VOLUME FOR CW RECEPTION. . SET B.W. SWITCH TO .S kHj . SET BFO CONTROL TO DESIRED COOE TONE FOR AM RECEPTION . SET B.W. SWITCH TO kHz . SET BFO CONTROL TO OFF TO TURN Of F RADIO SCT 2. SET REC SCNO SWITCH TO REC 7. SET GAIN CONTROL TO OFF TO TEST BATTERY 10. PRESS BAT. TEST SWITCH IF INDICATOR LIGHTS BATTERY IS OK TM S120-SS2-1S-1 WARNING Never erect the AN/PRC-64A antenna near or over high tension wires. Contact of the antenna wire with a high tension wire can cause death or severe injury. WARNING Operator and maintenance personnel should be familiar with the requirements of TB SIG 291 befori attempting installation or operation of the equipment covered in this manual. Failure to follow re quirements of TB SIG 291 could result in injury or DEATH. r Technical Manual No. 11-5820-552-15 j TM 11-5820-552-15 C1 HEADQUARTERS DEPARTMENT OF THE ARMY WASHINGTON, DC, 16 November 1970 OPERATORS, ORGANIZATIONAL, DIRECT SUPPORT, GENERAL SUPPORT, AND DEPOT MAINTENANCE MANUAL RADIO SET AN/PRC-64A (NSN 5820-00-143-4095) r r Paragraph Page Chapter 1. INTRODUCTION S e c t i o n I . G e n e r a l 1 - 1 - Z 1 - 1 I I . D e s c r i p t i o n a n d d a t a 1 - 4 1 - 9 1 - 1 Chapter 2. INSTALLATION S e c t i o n I . S e r v i c e u p o n r e c e p t o f e q u i p m e n t 2 - 1 , 2 - 2 2 - 1 I I . I n s t a l l a t i o n i n s t r u c t i o n s 2 - 3 2 - 9 2 - 1 Chaiter 3. OPERATION S e c t i o n I . O p e r a t o r s c o n t r o l s a n d i n d i c a t o r s 3 - 1 3 - 1 I I . O p e r a t i o n u n d e r u s u a l c o n d i t i o n s 3 - 2 3 - 9 3 - 2 I I I . O p e r a t i o n u n d e r u n u s u a l c o n d i t i o n s 3 - 1 0 3 - 1 3 3 - 6 C h a i t e r 4 . O P E R A T O R S M A I N T E N A N C E I N S T R U C T I O N S 4 - 1 4 - 5 4 - 1 5 . O R G A N I Z A T I O N A L M A I N T E N A N C E 5 - 1 5 - 1 3 5 - 1 6 . F U N C T I O N I N G O F E Q U I P M E N T 6 - 1 6 - 4 6 - 1 7. GENERAL SUPPORT MAINTENANCE S e c t i o n I . G e n e r a l 7 - 1 , 7 - 2 7 - 1 I I . T r o u b l e s h o o t i n g 7 - 3 7 - 8 7 - 3 I I I . R e m o v a l , r e p l a c e m e n t , a l i g n m e n t , a n d r e p a i r 7 - 9 7 - 1 4 7 - 1 9 I V. Te s t i n g p r o c e d u r e s 7 - 1 5 7 - 1 9 7 - 2 5 C h a i t e r 8 . D E P O T O V E R H A U L S T A N D A R D S 8 - 1 8 - 1 2 8 - 1 9. SHIPMENT, LIMITED STORAGE, AND DEMOLITION TO PREVENT ENEMY USE S e c t i o n I . S h i p m e n t a n d l i m i t e d s t o r a g e 9 - 1 , 9 - 2 9 - 1 1 1 . D e m o l i t i o n t o p r e v e n t e n e m y u s e 9 - 3 9 - 5 9 - 1 A p p e n d i x A . R E F E R E N C E S A - l B. MAINTENANCE ALLOCATION S e c t i o n I . I n t r o d u c t i o n B - l I I . M a i n t e n a n c e a l l o c a t i o n c h a r t B - 3 I I I . To o l a n d t e s t e q u i p m e n t r e q u i r e m e n t s B - 4 I V. R e m a r k s B - 5 I n d e x . LIST OF ILLUSTRATIONS F i g . N o . I n T i t l e P a g e TM 5820-552-15-1 Condensed operating instructions 1 - 1 T M 5 8 2 0 - 5 5 2 - 1 5 - 2 R a d i o S e t , A N / P R C - 6 4 A i v 1 - 2 T M 5 8 2 0 - 5 5 2 - 1 5 - 3 R a d i o S e t A N / P R C - 6 4 A , c o m p o n e n t s 1 - 3 2 - 1 T M 5 8 2 0 - 5 5 2 - 1 5 - 4 T y p i c a l p a c k a g i n g 2 - 2 2 - 2 T M 5 8 2 0 - 5 5 2 - 1 5 - 5 R a d i o S e t A N / P R C - 6 4 A , t o p p l a t e a s s e m b l y r e m o v e d 2 - 3 2 - 3 T M 5 8 2 0 - 5 5 2 - 1 5 - 6 T r a n s m i t t e r c r y s t a l s , i n s t a l l a t i o n a n d a l i g n m e n t 2 - 4 2 - 4 T M 5 8 2 0 - 5 5 2 - 1 5 - 7 R e c e i v e r c r y s t a l s , i n s t a l l a t i o n a n d a l i g n m e n t 2 - 4 2 - 5 T M 5 8 2 0 - 5 5 2 - 1 5 - 8 B a t t e r y i n s t a l l a t i o n 2 - 5 3-1 TM 5820-552-15-9 Radio Set AN/PRC-64A, controls, indicators, and connections 3-2 3 - 2 T M 5 8 2 0 - 5 5 2 - 1 5 - 1 C T y p i c a l a n t e n n a e r e c t i o n m e t h o d s 3 - 4 3 - 3 T M 5 8 2 0 - 5 5 2 - 1 5 - 1 1 C o n n e c t i o n d i a g r a m , e x t e r n a l p o w e r s o u r c e s 3 - 6 Change 1 i TM 11-5820-552-15 F i g . N o . I n 6-1 TM 5820-552-15-12 6-2 TM 5820-552-15-13 6-3 TM 5820-552-15-14 6-4 TM 5820-552-15-15 7-1 TM 5820-552-15-16 7-2 TM 5820-552-15-17 7-3 TM 5820-552-15-18 7-4 TM 5820-552-15-19 7-5 TM 5820-552-15-20 7-6 TM 5820-552-15-21 7-7 TM 5820-552-15-22 7-8 TM 5820-552-15-23 7-9 TM 5820-552-15-24 7-10 TM 5820-552-15-25 7-11 TM 5820-552-15-26 7-12 TM 5820-552-15-27 7-13 TM 5820-552-15-28 7-14 TM 5820-552-15-29 7-15 TM 5820-552-15-30 7-16 TM 5820-552-15-31 7-17 TM 5820-552-15-32 7-18 TM 5820-552-15-33 7-19 TM 5820-55g-15-34 7-20 TM 5820-552-15-35 7-21 TM 5820-552-15-36 7-22 TM 5820-552-15-37 7-23 TM 5820-552-15-38 7-24 TM 5820-552-15-39 7-25 TM 5820-552-15-40 7-26 TM 5820-552:15-41 7-27 TM 5820-552-15-42 7-28 TM 5820-552-15-43 8-1 TM 5820-552-15-44 8-2 TM 5820-552-15-45 8-3 TM 5820-552-15-46 8-4 TM 5820-552-15-47 8-5 TM 5820-552-15-48 8-6 TM 5820-552-15-49 8-7 TM 5820-552-15-50 T i t l e P l l f r e B l o c k d i a g r a m , R a d i o S e t A N / P R C - 6 4 A 6 - 2 B l o c k d i a g r a m , t r a n s m i t t e r a s s e m b l y 6 - 3 B l o c k d i a g r a m , r e c e i v e r a s s e m b l y 6 - 4 B l o c k d i a g r a m , m a i n c h a s s i s n e t w o r k s 6 - 4 S p e c i a l t e s t c a b l e s , c o n s t r u c t i o n d e t a i l s 7 - 2 Voltage and resistance test points, receiver assembly A4A7A2 (upper board) 7-6 Voltage and resistance test points, receiver assembly A4A7A1A1 (lower board) 7-6 Voltage and resistance test points, transmitter assembly, A4A9A2 7-8 Voltage and resistance test points, modulator and battery test assembly A4A2 7-9 P a r t s l o c a t i o n s , r e c e i v e r a s s e m b l y A 4 A 7 A 2 , ( u p p e r b o a r d ) 7 - 1 0 Component terminal locations, receiver assembly A4A7A2 (upper board) 7-11 Parts locations, receiver assembly A4A7A1A1 (lower board) 7-12 Component terminal locations, receiver assembly A4A7A1A1 (lower board) 7-13 P a r t s l o c a t i o n s , t r a n s m i t t e r a s s e m b l y A 4 A 9 A 2 7 - 1 4 Component terminal locations, transmitter assembly A4A9A2 7-15 Parts locations, modulator and battery test assembly A4A2 7-15 Component terminal locations, modulator and battery test assembly A4A2 7-16 Parts locations, antenna indicator assembly A4A1, and oscillator control assembly A 4 A 9 A 3 7 - 1 6 Component terminal locations, antenna indicator assembly A4A1, a n d o s c i l l a t o r c o n t r o l a s s e m b l y A 4 A 9 A 3 7 - 1 7 P a r t s l o c a t i o n s , t o p p l a t e a s s e m b l y A 4 , t r a n s m i t t e r s i d e 7 - 1 8 P a r t s l o c a t i o n s , t o p p l a t e a s s e m b l y A 4 , r e c e i v e r s i d e 7 - 1 9 H a r d w a r e l o c a t i o n s , r e c e i v e r s i d e 7 - 2 1 H a r d w a r e l o c a t i o n s , t r a n s m i t t e r s i d e 7 - 2 1 R e c e i v e r R F a l i g n m e n t , t e s t s e t u p 7 - 2 2 R e c e i v e r I F a l i g n m e n t , t e s t s e t u p 7 - 2 3 T r a n s m i t t e r a l i g n m e n t , t e s t s e t u p 7 - 2 4 R e c e i v e r t e s t s 7 - 2 7 T r a n s m i t t e r t e s t s 7 - 2 9 Schematic diagram, receiver assembly A4A7, Radio Set AN/PRC-64A 7-33 Schematic diagram, transmitter assembly A4A9; Radio Set AN/PRC-64A 7-35 Schematic diagram, top plate assembly A4, Radio Set AN/PRC-64A 7-37 W i r i n g h a r n e s s , R a d i o S e t A N / P R C - 6 4 A 7 - 3 9 R e c e i v e r I F a n d a u d i o t e s t s , t e s t s e t u p 8 - 2 R e c e i v e r b a n d w i d t h t e s t , t e s t s e t u p 8 - 4 R e c e i v e r a u d i o r e s p o n s e t e s t , t e s t s e t u p 8 - 5 R e c e i v e r a u d i o d i s t o r t i o n t e s t , t e s t s e t u p 8 - 6 Tr a n s m i t t e r P o w e r O u t p u t a n d f r e q u e n c y t e s t s , t e s t s e t u p 8 - 7 Transmitter amplitued modulation, audio sensitivity and sidetone test, test setup 8-8 Transmitter spurious radiation and backwave suppression tests, test setup 8-9 ii Change 1 TM 11-5820-552-15 3 1 PRESSURE VALVE TM 5820-552-15 -2 Figure 1-1. Radio Set AN/PRC-64A. 5 1 iv TM 11-5820-552-15 CHAPTER 1 INTRODUCTION r Section I. GENERAL 1-1. Scope This manual describes Radio Set AN/PRC-64A. The manual covers installation, operation, and maintenance. It includes instructions for cleaning, checking, and inspecting the equipment and replacing the battery. The organizational mainte nance chapter includes information on trouble shooting and repair procedures within the capabilities of the organizational repair techni cian. 1-2. Indexes of Publications a. DA Pam 310-4. Refer to DA Pam 310-4 to determine whether there are new editions, changes, or additional publications pertaining to the equipment. 6. DA Pam 310-7. Refer to DA Pam 310-7 to determine whether there are modifi cation work orders (MWOs) pertaining to the equipment. 1-3. Forms and Records a. Reports of Maintenance and Unsatisfactory Equipment. Maintenance forms, records, and re ports which are to be used by maintenance personnel at all maintenance levels are listed in and prescribed by TM 38-750. b. Report of Packaging and Handling Defi cien cies. Fill out and forward DD Form 6 (Packaging Improvement Report) as prescribed in AR 700- 58/NAVSUPINST 4030.29/AFR 71-13/MCO P4030.29A, and DLAR 4145.8. c. Discrepancy in Shipment Report (DISREP) (SF 361). Fill out and forward Discrepancy in Shipment Report (DISREP) (SF 361) as prescribed in AR 55-38/NAVSUPINST 4610.33A/AFR 75-18/ MCO P4610.19B and DLAR 4500.15. 1-3.1. Reporting of Errors The reporting of errors, omissions, and recom mendations for improving this publication by the individual user is encouraged. Reports should be submitted on DA Form 2028 (Recommended Changes to Publications and Blank Forms) or DA Form 2028-2 and forwarded direct to Commander, US Army Communications and Electronics Materiel Readiness Command, ATTN: DRSEL- MA-Q, Fort Monmouth, NJ 07703. 1-3.2. Reporting Equipment Improvement Recommendations (EIR) EIRs will be prepared using DA Form 2407, Maintenance Request. Instructions for preparing EIRs are provided in TM 38-750, the Army Maintenance Management System. EIRs should be mailed direct to Commander, US Army Com munications and Electronics Materiel Readiness Command, ATTN: DRSEL-MA-Q, Fort Mon mouth, NJ 07703. A reply will be furnished direct to you. 1-3.3. Administrative Storage Prior to or after an administrative storage period, the preventive maintenance procedures contained in paragraphs 4-4 and 5-4 should be performed. Crystals and the battery are removed and stored separately during administrative storage. of Army Electronics1-3.4. Destruction Materiel Destruction of Army electronics materiel to pre vent enemy use shall be in accordance with TM 750-244-2. Refer to paragraphs 9-3 through 9-5 for additional information. Section II. DESCRIPTION AND DATA 1-4. Purpose and Use (fi g. l-D Radio Set AN/PRC-64A is a battery operated, crystal controlled, radio transceiver which oper ates in the frequency range of 2.2 to 6.0 megahertz (MHz). It receives amplitude modulated (am), single sideband (ssb) voice transmissions and continuous wave (cw) radio telegraph code trans missions. It also transmits am voice or cw code. Operating frequency is determined by crystals installed in both transmitter and receiver and transmitter channel selection switches. The AN/ PRC-64A is housed in a waterproof case which contains the radio set, headphones, microphone, alignment tools and spare parts. The case is carried in a carrying bag which also contains reels of antenna wire, counterpoise wire, and transmis sion line. 1-5. Technical Characteristics Frequency range Tuning, receiver section. 2.2 to 6 MHz 4 crystal controlled channels, switch selected. Change 1 1-1 TM 11-5820-552-15 Tuning, transmitter4 crystal controlledcw 500 Hz 6 db down section.channels, switch selected. points; 1000 Hz 60 db down points. Crystal type requiredInput impedance50 ohms (pluck out): (approximately) Receiver section CR-78/U (channel frequency plus 455 kHz). Output and headset impedance. Electrical: 600 ohms TransmitterCR-89/U (channelBattery type BA-1509/PRC-64 section. frequency)Battery voltages,+ 32.4 v, +13.5 v and Channel frequency range Channel 1 2.2 to 2.85open circuit.+ 4.05 v (Receiver and TransMHz; Channel 2 2.8 Nominal (under+ 28 v, +12 v and +4 v mitter). to 3.65 MHz; Channel 3 3.6 to 4.70 MHz; load). Battery drain (typical): Channel 4 4.6 to 6.00Receiver13 ma 4 v, no signal MHz.Transmitter700 ma 28 v, for cw Transmitter section: 300 ma 28 v for Power output5 Watts cw or 1.5 watt voice voice, minimum.Battery connector in4 conductor, Cinch- ModulationAm, up to 90%AN/PRC-64A.Jones No. 13279 Microphone1900 ohms, magneticAntenna: Voice sidetoneIn headphones Antenna, on reel96 feet, single conductor Key for cw , Built in on panel. External key jack with frequency markers. provided.Counterpoise, on 96 feet, single conductor Keying sidetone . _Audio tone in reel.with frequency headphone markers. Keying Speeds: Transmission line,35 feet, 75-ohm twin With built in key Up to 12 wpm on reel.line with molded y With external key . Up to 300 wpm connector. Antenna impedance . Receiver section: 50 ohms 1-6. Components andDimensions a. Components. The components of Radio Set Sensitivity5 microvolts am, 30% AN/PRC-64A are listed below. ComponentQ u a n t i t y F S N milliwatt of audio Radio Set AN/PRC-64A . . 1 5820-143-4095 output. 5 milliwatts Carrying bag1 5820-438-1919 1 5995-477-3871 Maximum power output.Transmission line B a n d w i d t h . . . am 6 kHz 6 db down points 12 kHz 60 Headset Microphone 2 db down points; Reel 3 5820-463-4693 6. Dimensions. The dimensions and weight of the components are listed below. Component Height (in.) Depth (in.) Width (in.) Unit weight (lb) Fi*. No. Radio Set AN/PRC-64A 5 5*4 5 inch diameter 5 irich diameter 5 inch diameter 4% 5% 1 0 13% 7V4* 1 .76 .75 .56 1-2 Carrying bag 1-2 Counterpoise reel 1-2 Transmission l