AN-GRC-19_serv2_TM11-5820-295-35_1961.pdf
DEPARTMENT OF THE ARMY TECHNICAL MANUALTM 11-5820-295-35 DEPARTMENT OF THE AIR FORCE TECHNICAL ORDERTO 31R2-2GRC19-42 FIELD AND DEPOT MAINTENANCE MANUAL RADIO SET ANIGRC-19 This copy is a reprint which includes current pages from Changes 1 and 2. DEPARTMENTS OF THE ARMY AND THE AIR FORCE 16 SEPTEMBER 1960 WARNING EXTREMELY DANGEROUS VOLTAGES EXIST IN THE FOLLOWING UNIT: TRANSMITTER T-195(*)/GRC-19 1,000 volts dc 10,000 volts rf DONT TAKE CHANCES! Changes in force: C 1 and C 2 TM 11-5820-295-35 C2 CHANGEHEADQUARTERS DEPARTMENT OF THE ARMY No. 2WASHINGTON, DC, 9 April 1975 Field and Depot Maintenance Manual RADIO SET AN/GRC-19 TM 11-5820-295-35, 16 September 1960, is changed as follows: Inside front cover. Radiation warning is added after existing notices. 1 WARNING RADIATION HAZARD RADIOACTIVE MATERIAL CONTROLLED DISPOSAL REQUIRED ACCOUNTABILITY NOT REQUIRED STD RW-2 AmmeterRa 2260.59uCi6625-00-569-0243 AmmeterRa 2261.OuCi6625-00-538-9700 MeterRa 2260.69uCi6625-00-669-0769 Electron Tube OA2WA5960-00-5034880 EEVCU 2380.1uCi CBS HytronNi 630.5uCi RaytheonCo 600.2uCi Radiation Hazard Information: The following radiation hazard information must be read and understood by all personnel before operating or repairing Radio Set AN/GRC-19. Hazardous radioactive materials are present in the above listed components of the T-195/GRC-19, AN/GRC-19A, AN/GRC-19B, and R-392/URR. The components are potentially hazardous when broken. See qualified medical personnel and the local Radiological Protection Officer (RPO) immediately, if you are exposed to or cut by broken components. First aid instructions are contained in TB 43-0116, TB 43-0122 and AR 75-15. NEVER place radioactive components in your pocket. Use extreme care NOT to break radioactive components while handling them. NEVER remove radioactive components from cartons until you are ready to use them. If any of these components are broken, notify the local RPO immediately. The RPO will survey the immediate area for radiological contamination and will supervise the removal of broken components. The above listed radioactive components will not be repaired or disassembled. Disposal of broken, unserviceable, or unwanted radioactive components will be accomplished in accordance with the instructions in AR 755-15. 2 By Order of the Secretary of the Army: FRED C. WEYAND General, United States Army Official:Chief of Staff VERNE L. BOWERS Major General, United States Army The Adjutant General Distribution: To be distributed in accordance with DA Form 12-51, (qty rqr block no. 91). Direct and General Support maintenance requirements for AN/GRC19. 3 DEPARTMENT OF THE ARMY TECHNICAL MANUALTM 11-5820.95-35 DEPARTMENT OF THE AIR FORCE TECHNICAL ORDERTO 31R2-2GRC19-42 C1 FIELD AND DEPOT MAINTENANCE MANUAL RADIO SET AN/GRC-19 TM 11-80-295-35DEPARTMENTS OF THE ARMY TO 31R2-2GRC19-42AND THE AIR FORCE Changes No. 1Washington 25, D.C.,26 July 1961 TM 11-5820-29-5/TO 31R2-2GRC1942, 16 September 1960, is changed as follows: Page 3. Delete paragraph 2 and substitute: 2.Internal Differences in Models Internal difference are listed in the chart below. ItemRadio Transmitter T-195/GRC-19Radio Transmitter T-195A/GRC-19Radio Transmitter T-196B/GRC-19 High-voltage source.Dynamotor D602.Transistorized, high-voltage power supply Transistorized, high-voltage power supply . Low-voltage source . Dynamotor D601.Dynamotor D1601 .Transistorized, high-voltage power- supply. Pa servoamplifier chopper G201. Vibrator type.Transistorized.Transistorized. Antenna network servoampll-Vibrator type .Transistorized.Transistorized. fier chopper 0901. Exhaust blower unit B602. . Dc-type motor. Do-type motor.Ac-drive motor. Transistorized dc-to ac inverter. Power amplifier blower unitDc-type motor. Dc-type motor .Ac-drive motor. Transistorized B202.dc to-ac inverter. Autotune relays K608 andUnsealed.Hermetically sealed .Hermetically sealed. K610. V401 and V403 .Type 12AT7 .Type 12AT7WA .Type 12AT7WA. V203, V902, and V904 .Type 600O/6AQ5S .Type 6O00/6A5 .Type 6005/6AQ/6098. CR201 and CR202.Type IN67A.Type IN1.Type INe91. R912 .270 ohms .470 ohms .470 ohms. R928 .270 ohms .470 ohms.470 ohms. R930 .1,800 ohm .Jumper wire.Jumper wire. Air-intake dust filter.Supplied with auxiliary dust filter for use where high duet concentration exits. Page 4, paragraph 3b. Change Fixer Portable. For Fixer-portable to: Fixed Portable. For fixed-portable. Page 11, paragraph 9, line 17. After and to the low-voltage dynamotor circuit add: or the low-voltage, transistor-type power supply in Radio Transmitter T-195B/GRC-19. Page 12, .figure 8. Make the following changes: After +28V FOR HIGH-VOLTAGE DYNAMOTOR add: OR HIOH-VOLTAGE, TRANSISTOR-TYPE POWER SUPPLY. In the upper right-hand section, after +28V FOR LOW-VOLTAGE DYNAMOTOR add: OR LOW- VOLTAGE, TRANSISTOR-TYPE POWER SUPPLY. 1 By Order of the Secretaries of the Army and the Air Force: G. H. DECKER, General, United States Army, Official:Chief of Staff. R. V. LEE, Major General, United States Army, The Adjutant General. CURTIS E. LeMAY, Official:Chief of Staff, United States Air Forces. R. J. PUGH, Colonel, United States Air Force Director of Administrative Services. Distribution: Active Army: To be distributed in accordance with DA Form 12-7 requirements for TM 11-series (Unclas) plus the following: USABA (2)Unit organized under following11-117 CNGB (1)TOE s (2 copies each except11-155 Tech Stf, DA (1) exceptas indicated):11-165 CSigO (18)11-511-167 DASA (5)11-611-237 ARADCOM (2 )11-711-500 (AA-AE) (4) ARADCOM Rgn (2)11-1511-555 MDW (1)11-1611-557 Seventh US Army (2)11-3811-557 EUSA (2) 11-5511-592 USASCS (39)11-5711-597 11-9529-56 11-98 NG: State AG (3) units same as Active Army except allowance is 1 copy to each unit. USAR: None. For explanation of abbreviations used, see AR 320-50 2 TM 11-5820-295-35 TO 31R2-2GRC19-42 TECHNICAL ManualDEPARTMENT OF THE ARMY No. 11-5820-295-35AND THE AIR FORCE TECHNICAL ORDER No. 31R2-2GRC19-42Washington 25,D. C., 16 September 1960 RADIO SET AN/GRC-19 RADIO SET AN/GRC-19 ParagraphPage CHAPTER1.INTRODUCTION Scope.13 Internal differences in models.23 CHAPTER2.INSTALLATION Additional equipment required for installation.34 Vehicular installation of radio set .44 Fixed-portable installation of radio set .55 CHAPTER3.THEORY SectionI.System theory System applications.66 Signal paths.77 II.Interunit circuit details Extent of instructions.811 Primary power circuit.911 Antenna-switching and disabling circuit.1011 Receiver-silencing circuit.1114 Sidetone circuit.1215 Relay circuit.1317 CHAPTER4.TROUBLESHOOTING General instructions.1418 Test equipment and tools required.1518 Replacement of Cable Assembly, Radio Frequency CG-1127 U.1618 APPENDIXREFERENCES.20 *This manual, together with TIM 11-5820-295-10, 3 June 1960, and TM 11-5820-295-20, 3 June 1960, supersedes TM 11-274, 27 April 1954, including C1, 11 January 1956; C2, 27 July 1956; C3, 7 February 1957; and C4, 17 May 1957. 1 CHAPTER 1 INTRODUCTION 1. Scope a.This manual covers field and depot maintenance for Radio Set AN/GRC-19. It includes instructions appropriate to third, fourth, and fifth echelons for installing, troubleshooting, testing, and replacing of the equipment. It also lists tools, materials, and test equipment for third, fourth, and fifth echelon installation and maintenance. Detailed functions of the equipment are covered in the system theory section. b.The complete technical manual for this equipment includes: TM 11-5820295-10, TM 11- 5820295-10P, TM 11-5820-29.5-20, TM 115820- 29520P, and TM 11-5820-2935P. c.Forward comments concerning this manual to the Commanding Officer, U. S. Army Signal Materiel Support Agency, ATTN: SIGMS-PA-2d, Fort Monmouth, N. J. Note. For applicable forms and records, see paragraph 2, TM 11-5820-29510. 2. Internal Differences in Models Internal differences are listed in the chart below. TransmitterTransmitter ItemT-195/GRC-19T-195A/GRC-19 1,000-voltdc sourceDynamotorTransistorized, D602high-voltage power supply A1200 Pa servoamplifierVibrator typeTransistorized chopper G201 Antenna networkVibrator typeTransistorized servoamplifier chopper G901 V401 and V403Type 12AT7Type 12AT7WA CR201 and CR202Type 1N67AType 1N691 R912270 ohms470 ohms R928270 ohms470 ohms R9301,800 ohmsJumper wire Autotune relaysUnsealedHermetically K608 and K610sealed 3 CHAPTER 2 INSTALLATION 3. Additional Equipment Required for Instal- lation a.Vehicular. To install the radio set in a vehicle, a vehicular installation unit (kit) is required. The type of installation unit used will depend on the type of vehicle in which the radio set is to be installed. Items in the installation unit, such as the brackets and the mounting hardware, vary for each type of vehicle. The following chart lists the Federal stock numbers of the vehicular installation units required and which must be requisitioned for the different types of vehicles. VEHICULAR INSTALLATION UNIT Type of vehicleBasic unitInstallation unit Carrier, cargo, amphibious, M76 .5820-030-01555820-030-0156 Carrier, personnel, full tracked: armored, M59.5820-030-01555820-030-0158 Truck, cargo, x ton, 4 x 4, M37 .5820-030-01555820-537-3999 Truck, command, X ton, 4 x 4, M42 .5820-030-01555820-537-3999 Truck, cargo, 2s ton, 6 x 6, M34.5820-030-01555820-399-7219 Truck, cargo, 2a? ton, 6 x 6, M35 .5820-030-01555820-030-7219 Truck, cargo, 2Y* ton, 6 x 6, M135.5820-030-01555820-030-0118 Truck, cargo, 2It ton, 6 x 6, M211.5820-030-01555820-030-0118 Truck, utility, 4 ton, 4 x 4, M38.5820-030-01555820-399-7220 Truck, utility, g ton, 4 x 4, M38A1.5820-030-01555820-399-7220 NOTE. For current lists of vehicular installation units for other vehicles, see SB 11-131 b.Fixer Portable. Fixer-portable applications, the installation must be made on a solid, flat surface. A Power Unit PP-1451/G is required to operate the radio set. If the radio set is installed at a fixed site, it is generally desirable to install Antenna Group AN/GRA-12 (not supplied with the radio set). For installation instructions for the AN/GRA-12, refer to TM 11-2651. No special mounting hardware is provided for fixed- portable installation. cReceiver and Transmitter Mounted Separately. If the transmitter and the receiver are mounted separately, Mounting MT-925/GRC-19 is required for the transmitter and Mounting MT-36/URR for the receiver. Refer to TM 11-806 for installation instructions for the MT-925/GRC-19 and to TFM 11-858 for the MT- 836/URR. Cable Assembly, Special Purpose, Electrical CX-1599/U and Cable Assembly, Radio Frequency CG- 1127/U will not be long enough if the transmitter and receiver are separated by more than 3 inches. These cable assemblies must be specially fabricated with sufficient cable to connect the transmitter and the receiver. The CX-1599/U is an eight-conductor cable with a nine-pin, right-angle connector on each end. The CG-1127/U is a Radio Frequency Cable RG58C/U with a Plug Connector UG913/U on each end. 4. Vehicular Installation of Radio Set a.General. Instructions for each type of vehicular installation are supplied with the vehicular installation unit (para 3). Use the instructions below, as necessary, to supplement instructions provided with the particular installation unit. b Antenna Installation. Install the mast base; follow the instructions supplied with the vehicular installation unit. Assemble the mast sections as follows: (1)Screw together three MS-116-A sections. (2)Screw the MS-117-A section into the top MS-116-A section. (3)Screw the MS-118-A section into the MS117-A section. (4)Slide the antenna sheath clamp and the antenna cover up over the lowest section of MS-116-A. (5)Screw the MS-116-A section (on the end of the partly assembled antenna) into the mast base. (6)Slide the antenna cover down onto the mast base. (7)Slide the antenna sheath clamp down to the antenna cover and tighten it over the top. c.Whip Antenna Tiedown. Rope RP-5 and insulator IN-86 are used to tie the antenna to the 4 vehicle. To tie down the whip antenna, tie the rope about 3 feet from the top of the antenna. Tie the rope to the insulator. Pull the rope until the top of the antenna protudes over the rear of the vehicle. Tie the rope to the back of the vehicle. d.Mounting Installation. Mounting MT851/GRC-19 is secured in place with eight bolts and nuts. Four of these are put through a plate on one end of the mounting, and four are put through the plate at the other end. The four holes in each plate are reached through an opening in the mounting, directly above each plate. (It is not necessary to take the mounting apart during in
