AN-URC-92_serv_TM11-5820-873-34_1980.pdf

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1、TM 11-5820-873-34 TECHNICAL MANUAL DIRECT AND GENERAL SUPPORT MAINTENANCE MANUAL RADIO SET AN/URC-92 (NSN 5820-01-057-6447) HEADQUARTERS, DEPARTMENT OF THE ARMY 1 FEBRUARY 1980 WARNING Several kilovolts are present at the Antenna Coupler antenna post, E1, during steps 13 thru 14b. Exercise caution a

2、nd do not contact antenna post E1. TM 11-5820-873-34 TECHNICAL MANUALHEADQUARTERS DEPARTMENT OF THE ARMY No. 11-5820-873-34WASHINGTON, DC 1 February 1980 Direct and General Support Maintenance Manual RADIO SET AN/URC-92 (NSN 5820-01-057-6447) REPORTING OF ERRORS You can improve this manual by recomm

3、ending improvements using DA Form 2028-2 (Test) located in the back of the manual. Simply tear out the self-addressed form, fill it out as shown on the sample, fold it where shown, and drop it in the mail. If there are no blank DA Form 2028-2 (Test) in the back of your manual, use the standard DA Fo

4、rm 2028 (Recommended Changes to Publications and Blank Forms) and forward it to Commander, US Army Communications and Electronics Materiel Readiness Command, ATTN: DRSEL-ME-MQ Fort Monmouth, NJ 07703. A reply will be furnished direct to you. Table of Contents Para- graphPage CHAPTER1.INTRODUCTION Se

5、ctionI.General.1-11-1 II.Description and data .1-81-1 CHAPTER2.FUNCTIONING OF EQUIPMENT SectionI.General.2-12-1 II.Radio receiver-transmitter RT-1277/URC-92 functional operation .2-32-1 III.Antenna coupler CU-2229/URC-92 functional operation.2-122-15 CHAPTER3.DIRECT SUPPORT SectionI.General.3-13-1 I

6、I.Tools and equipment.3-33-1 III.Checkout/ troubleshoot.3-43-1 IVMaintenance.3-73-16 V.Administrative Storage .3-133-18 CHAPTER4.GENERAL SUPPORT SectionI.General.4-14-1 II.Tools and equipment.4-34-1 III.Checkout/troubleshoot.4-44-1 IV.Maintenance.4-74-32 V.Administrative Storage .4-234-46 APPENDIXA.

7、REFERENCESA-1 INDEXIndex 1 TABLE OF CONTENTS FigureTitlePage 1-1Radio Set AN/URC-92 .1-2 1-2Typical Warranty Notice .1-3 2-1Radio Receiver-Transmitter Simplified Block Diagram .2-2 2-2Power Supply Block Diagram.2-8 2-3Synthesizer Simplified Block Diagram.2-9 2-4Antenna Coupler Control Unit Schematic

8、 Diagram.2-16 3-1BNC/Chip Lead Cable.3-1 3-2Direct Support Checkout/Troubleshoot the Receiver-Transmitter Waveforms.3-5 3-3Front Panel and Circuit Card Assemblies.3-17 3-4Antenna Coupler Control.3-18 4-1BNC/Chip Lead Cable.4-1 4-2General Support Checkout/Troubleshoot the Receiver-Transmitter Wavefor

9、ms.4-5 4-3Power Supply .4-34 4-4Filter Module.4-36 4-5Filter Module Circuit Cards .4-37 4-6Display Assembly.4-38 4-721 MHz Adjustment Setup (1A4A1).4-39 i TM 11-5820-873-34 FigureTitlePage 4-817 MHz Adjustment Setup(1A4A1).4-39 4-919.45 MHz Adjustment Setup #1 (1A4A3).4-40 4-1019.45 MHz Adjustment S

10、etup #2 (1A4A3).4-40 4-1119.45 MHz Adjustment Setup #3 (1A4A3).4-41 4-12100.75 MHz Bandpass Filter Adjustment Setup #1.4-41 4-13100.75 MHz Bandpass Filter Adjustment Setup #2.4-41 4-14100.75 MHz Bandpass Filter Adjustment Setup #3.4-41 4-1581.25 MHz Bandpass Filter Adjustment Setup #1.4-42 4-1681.25

11、 MHz Bandpass Filter Adjustment Setup #2.4-42 4-17VHF VCO CCA Adjustment Points.4-43 4-18C MAX/C MIN Adjustment Locator.4-45 4-19L MAX/L MIN Adjustment Locator.4-45 4-20Connection and Adjustment Points - Amplitude Detector Adjustment .4-47 4-21Connection and Adjustment Points - Phase Detector Adjust

12、ment .4-48 4-22Back-Panel-Exploded View.4-49 4-23Receiver-Transmitter-Center.4-50 4-24Spectrum Generator Circuit Card Assembly (CCA) .4-51 4-25Low Digit Generator (CCA).4-52 4-26Translator(CCA) .4-53 4-27VHF Divider(CCA) .4-54 4-28VHF VCO(CCA).4-55 4-29VHF Mixer(CCA).4-56 4-30IF Filter (CCA).4-57 4-

13、31Sideband Generator (CCA).4-58 4-32Audio (CCA).4-59 4-33Power Supply-Exploded View.4-60 4-34Power Supply Chassis-Exploded View .4-61 4-35Regulator Assy.4-62 4-36Synthesizer Mother Board.4-63 4-37Receiver/Exciter Mother Board.4-64 4-38DC Inverter-Exploded View.4-65 4-39DC Inverter (CCA) .4-66 4-40RF

14、 Power Amplifier(CCA).4-67 4-41Main Harness .4-68 4-42Odd Channel Filter (CCA).4-69 4-43Even Channel Filter (CCA).4-70 4-44Receiver Filter (CCA).4-71 4-45Motor Central Board Assembly .4-72 4-46Motor Central Board (CCA).4-73 4-47Front Panel Assembly (1 of 3).4-74 4-47Front Panel Assembly (2 of 3).4-7

15、5 4-47Front Panel Assembly (3 of 3).4-76 4-48Main Harness-Front Panel A Transmit B Receive Relay.4-77 4-49Speaker Driver(CCA).4-78 4-50Decoder (CCA).4-79 4-51Display Assembly ANTENNA COUPLER, HANDSET; HEADSET; CW KEY. 2.RETURN FAILED COMPONENT, FOR EXCHANGE, TO: SUNAIR; 3101 S. W. 3 AVE.; FT. LAUDER

16、DALE, FLA 33315. PHONE 305-525-1505. 3.SHIPPING INSTRUCTIONS: CARDBOARD BOX + FILLER; RETURN ADDRESS. 4.INCLUDE FAILURE CIRCUMSTANCE. EL5EB002 Figure 1-2. Typical Warranty Notice. 1-3 TM 11-5820-873-34 CHAPTER 2 FUNCTIONING OF EQUIPMENT Section I. GENERAL 2-1.Introduction. This chapter describes how

17、 the radio set operates. The chapter is divided into four sections which present the information in a logical sequence. 2-2.Description of Sections. a.Functional Operation of Radio Receiver- Transmitter RT-1277/URC-92. Section II describes the functional operation of the RT-1277/URC-92. The section

18、progresses from a simplified system explanation and block diagram to detailed circuit descriptions and block diagrams. This presentation enables easy identification of circuitry common in both receive and transmit functions and that circuitry specific to either receive or transmit. NOTE Although ANT

19、ENNA COUPLER CONTROL 1A2 is housed in the radio set, it functions as part of the CU- 2229/URC-92. Certain functioning with meter 1A2M1 will be discussed in this section but the remainder of ANTENNA COUPLER CONTROL 1A2 functions will be covered in Section III. b.Functional Operation of Antenna Couple

20、r CU- 2229/URC-92. Section III describes the functional operation CU-2229/URC-92. c.Functional Operation of Circuits. Section IV describes the functional operation of non-conventional circuits and certain conventional circuits. The conventional circuits discussed in this section are those circuits t

21、hat perform functions that may not be readily apparent to an experienced maintenance technician. Section II. RADIO RECEIVER-TRANSMITTER RT-1277/URC-92 FUNCTIONAL OPERATION 2-3.Simplified Overall Operation (Fig. 2-1). a.Operating Frequency. The RT-1227/URC-92 operates over a frequency range of 1.6 to

22、 29 9999 MHz. The operating frequency is determined by the setting of FREQ CONTROL 1A1S15 and the FREQUENCY A and FREQUENCY B front panel switches. (1)FREQ CONTROL 1A1S15 selects which group of FREQUENCY switches that control the operating frequency (2)The setting of the selected FREQUENCY switches

23、is decoded by decoder 1A1A2 and displayed by LED display 1A1A3. (3)Synthesizer 1A4 has three output frequencies. Two of the output frequencies are fixed and the third controls the operating frequency of the RT-1277/URC- 92. b.Receive Operation. The RF signal is received at ANT jack 1A8J1 and passed through filter 1A5 to receiver/exciter 1A3. The receiver/exciter converts the RF signal to audio. The audio signal is amplified by speaker driver 1A1A1 and used to drive speaker 1A1LS1. c.Transmit Operation. (1)CW. Operating the CW Key causes a sidetone to be genera