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1、Portions of this manual are reprinted by permission of Collins Radio Company TM 11-5821-248-12 DEPARTMENT OF THE ARMY TECHNICAL MANUAL OPERATOR AND ORGANIZATIONAL MAINTENANCE MANUAL RADIO SET AN/ARC-102 Headquarters Department of the Army Washington 25 D.C. 27 November 1963 WARNING Be careful when w
2、orking on the power connections. Serious injury or death may result from contact with these terminals. DONT TAKE CHANCES! EXTREMELY DANGEROUS VOLTAGES EXIST IN THE FOLLOWING COMPONENT OF RADIO SET AN/ARC-102: RECEIVER-TRANSMITTER, RADIO RT-698/ARC-1021,500 volts DANGEROUS VOLTAGES EXIST AT THE ANTEN
3、NA TERMINALS CHAPTER 1. Section I. 1 2 3 3 3 3 II. 5 5 CHAPTER 2. Section I. INTRODUCTION General Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Index of publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Forms
4、and records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Description and data Purpose and use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Technical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Comp
5、onents of Radio Set AN/ARC-102 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Common names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Description of radio set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6、 . . . . . Description of receiver-transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . Description of control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Description of Power-Inverter Mounting PP-3702/ARC-102 . . . . . . . . . . . . . . . . Additional e
7、quipment required. . . . . . . . . . . . . . . . . . . . . . . . . . . OPERATING INSTRUCTIONS Operation General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 This copy is a reprint which includes current pages fro
8、m Changes 4 and 5. 4 5 6 7 8 9 10 11 12 3 3 5 5 6 6 6 9 Section CHAPTER Section CHAPTER II. 3. I. II. III. 4. APPENDIX I. II. III. Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Modes of operation . . . . . . . . . . . . . . . .
9、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Starting procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preflight (daily) i
10、nspection General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preflight inspection, power-on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ORGANIZATIONAL MAINTENANCE General Scope of maintenance. . . . . . . .
11、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . Tools, test equipment, and materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preventive maintenance procedures Preventive maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12、 . . . Intermediate preventive maintenance checks and services . . . . . . . . . . . . Intermediate preventive maintenance checks and services chart . . . . . . . Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Periodic preventive
13、maintenance checks and services. . . . . . . . . . . . . . . Periodic preventive maintenance checks and services chart . . . . . . . . . . Troubleshooting General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . Troubleshooting chart. . . .
14、. . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . , . . Removal and replacement of control unit panel lamps . . . . . . . . . . . . . . . . Removal and replacement of control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . Removal and replacement of receiver-transmit
15、ter. . . . . . . . . . . , . . . . . . . . DEMOLITION PREVENT ENEMY USE Authority for demolition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Methods of destruction. . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ParagraphPage
16、 149 159 169 1710 1811 1911 2012 2112 2212 2312 24l3 2514 2614 2714 2815 2916 3016 3116 3216 3318 3418 REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 MAINTENANCE ALLOCATION . . . . . . . . . . . . . . . . . . . . . . .
17、. . . . . . . . . . . . . . . . . . . . 20 BASIC ISSUE ITEMS LIST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . , 24 Figure 1. Radio Set AN/ARC-102. 2 CHAPTER 1 INTRODUCTION Section I. GENERAL 1. Scope This manual describes Radio Set AN/ ARC- 102 (fig
18、. 1) and covers its operation and second echelon maintenance. It in- cludes operation, cleaning and inspection of the equipment, and replacement of parts available to second echelon maintenance. 2. Index of Publications Refer to the latest issue of DA Pam 310-4 to determine whether there are new edi
19、tions, changes, or additional publica- tions pertaining to the equipment. Depart- ment of the Army Pamphlet No. 310-4 is an index of current technical manuals, technical bulletins, supply manuals, sup- ply bulletins, lubrication orders, and mod- ification work orders which are available through publ
20、ications supply channels. The index lists the individual parts (-10, -20, -35P, etc) and the latest changes to and revisions of each equipment publication. 3. Forms and Records a. Reports of Maintenance and Unsatis - factory Equipment Use equipment forms and records in accordance with instruc- tions
21、 in TM 38-750. b. Report of Damaged or Improper Ship- ment. Fill out and forward DD Form 6 (Report of Damaged or Improper Ship- ment) as prescribed in AR 700-58 (Army), NAVSANDA Publication No. 378 (Navy), and AFR 71-4 (Air Force). c. Reporting of Equipment Manual Im- provements. The direct reportin
22、g, by the individual user, of errors, omissions, and recommendations for i m p r o v i n g this equipment manual is authorized and en- couraged. DA Form 2028 will be used for reporting these improvement recommen- dations. This form may be completed by the use of pencil, pen, or typewriter. DA Form 2
23、028 will be completed in triplicate and forwarded by the individual using the manual. The original and one copy will be forwarded direct to: Commanding Officer, U. S. Army Electronics Materiel Support Agency, ATTN: SE LMS-MP, Fort Mon- mouth, New Jersey 07703. One informa- tion copy will be furnishe
24、d to the individ- uals i m me di a t e supervisor (officer, noncommissioned o f f i c e r, supervisor, etc). Section II. DESCRIPTION AND DATA 4. Purpose and Useground two-way communications. The op- (fig. 1)crating range of Radio Set AN/ARC-102 - - - a. Purpose. Radio Set AN/ARC-102 is a lightweight
25、 airborne radio set. It pro- vides transmission and reception of amplitude-modulated (am.), single-side- band (ssb), and continuous-wave (cw) sig- nals within the high frequency (hf) range of 2.000 to 29.999 megacycles (me) on any of its 28,000 channels. b. Use. Radio Set AN/ARC-102 is used in aircr
26、aft for air-to-air and air-to- varies according to the terrain, atmos- pheric conditions, and the altitude of the aircraft. 5. Technical Characteristics a. General. Frequency range . . . .2.000 to 29.000 mc. Frequency channels . .28,000 at l-kilo- cycle intervals 3 Time required to change channels .
27、 . . 8 seconds maxi- mum (excluding time required for external antenna coup- ling unit). Types of trans- mission . . . . . . . . . Voice and CW. Range . . . . . . . . . . . Line-of-sight. Surrounding Tem- perature . . . . . . .-40to+55C (30-minute operation at +70C). Surrounding humid- ity range . .
28、 . . . . . . Up to 95-percent relative humid- ity at 50C for 48 hours. Power requirement . .27.5 volts direct current, at 950 watts. b. Receiver-Transmitter, Radio RT- 689/AR C-102. (1) Transmitter characteristics. Radio frequency power output . . . . . . . . . Ssb: 400 watts peak-envelope- power (P
29、EP); Am.: 100 watts average; Cw.: 100 watts average. Radiofrequency output impedance . . . . . .52 ohms. Audio input Impedance: Balanced , , . . . , , 600 ohms, Unbalanced . . . . . 100 ohms. Audiofrequency re- sponse . . . . . . . . . . 5 decibels peak to valley from 300 to 3,000 cycles per second.
30、 Distortion . . . . . . . . . Ssb: Third order distortion prod- ucts down at least 30 deci- bels. Am.: Less than 15 percent at 80- percent modu- lation. (2) Receiver characteristics. sensitivity . . . . . . . . Ssb: 1 microvolt for 10-decibel signal-plus- noise to noise ratio. Am.: 3 micro- volt mod
31、ulated 30 percent, with 1,000 cycles per second, for 6-decibel Signal-plus- noise to noise ratio. Selectivity . . . . . . . . Ssb: 2.85 kilo- cycles at 6 decibels down; 6.0 kilocycles at 60 decibels down. Am.: 5.5 kilo- cycles at 6 decibels down 14.0 kilocycles at 60 decibels down. Automatic gain co
32、n- trol characteristics Maximum varia- tion of audio output is 6 decibels for in- put signals 100,000 micro- volts. No over- load below 1- Volt signal input. Intermediate fre- quency and image rejection . . . . . . . , 80 decibels minimum. Audio output power . , . 100 milliwatts into 300-ohm load. A
33、udio distortion . . . . . Less than 10 percent. Audio response . . . . . 5-decibel peak- to-valley” ratio from 300 to 3,000 cycles per second. 4 c. Power-Inverter, Mounting PP-3702/ ARC-102. Input voltage . . . . . .27.5 volts dc. Output voltage . . . .115 volts alter- nating current, single phase.
34、Volt-ampere rating. . 250 volt- amperes. Output waveform . . . . Sine wave. Harmonic distortion . . 10 percent. d. Control, Radio Set C-3940/ARC-94. Input voltage . . . . . . .27.5 volts dc. 6. Components of Radio Set AN/ARC-l 02 (fig. 1) Note: This listing is based on the original ship- ment by the
35、 contractor on Order No. 20875 -PP-63. For the current official listing of components, see the basic issue items list, appendix III. QuantityItem HeightDepthWidthUnit weight in.in.(in.) Receiver-Transmitter, Radio RT-698/ARC-1027-5/822-3/1610-1/850 1Control, Radio Set C-3S40/ARC-94 - 1 2-5/84-7/85-3
36、/42 Power-Inventer, Mounting PP-3702/ARC-102-8-5/623-1/21113.5 7. Common Names A list of the nomenclature assignments for Radio Set AN/ARC-102 and its compo- nents is given below. A common name is indicated after each item. NomenclatureCommon name Radio Set AN/ARC-102Radio set. Receiver-Transmitter
37、Radio Receiver-transmitter, RT-698/ARC-102 . Control, Radio Set C-3940/Control unit. ARC-94. Power-Inverter, MountingMounting PP-3702/ARC-102. 8. Description of Radio Set a. The radio set (fig. 1) consists of a receiver-transmitter, a control unit, and a mounting. The interconnecting cables to which
38、 the components are connected are supplied as part of the aircraft in which the equipment is installed. b. THE components of the radio set are scoured to mounting surfaces within the aircraft. From the mounting and panel connectors, connections are made to the aircraft power source and the component
39、s of the radio act. The coaxial cable con- nection to the antenna is made either direct from the front panel of the receiver- transmitter (fig. 2) or through an antenna coupling unit (not part of the radio set paragraph 12f). The control unit is nor- mally located in the radio control panel of the a
40、ircraft, within easy reach of the pilot and copilot. For the location of the other components, refer to the aircraft technical manual in which the radio set is installed. 9. Description of Receiver-Transmitter (fig. 2) The receiver-transmitter is a sepa- rately housed unit containing the receiver an
41、d transmitter circuits of the radio set. Two carrying handles are mounted on the front pan e 1. A front panel dust cover covers the blower fan and air filter which are mounted on the front panel. Two hold- down studs are provided on the lower corners of the front panel to secure the receiver-transmi
42、tter to the mounting when it is installed. Electrical connections are made through the 60-pin connector on the rear panel. A grounding jack is also mounted on the rear panel to guide and pro- vide a ground for the receiver-transmitter when it is mounted on the mounting (para 10). An AUX RCVR ANT. co
43、nnector is mounted on the right for the front panel to connect the auxiliary data equipment to the receiver-transmitter. An ANT. con- nector mounted on the left side of the front panel connects the receiver-transmitter to the antenna coupling unit. A PHONE jack and a MIC jack are mounted front panel
44、 so that a microphone headset may be connected direct on the and a to the 5 Figure 2. Receiver-transmitter. receiver-transmitter. A monitor meter and a meter switch are located on the front pane 1 for checking the receiver- transmitter. A coaxial cable connects the REC. IF OUT connector to the REC.
45、IF IN connector on the right side of the front panel. A coaxial cable connects the 500 KC STD. connector to the 500 KC REF connec- tor on the left side of the front panel. These coaxial cables and connectors enable the receiver-transmitter circuits to be checked when the receiver-transmitter is inst
46、alled in the aircraft. 10. Description of Control Unit (fig. 3) The control unit is an edge-lighted, console-type unit. The front panel of the control unit contains all the controls nec- essary for operation of the radio set. The control unit is held in place by four quick- disconnect fasteners on t
47、he corners of the front panel. The electrical connector is mounted on the rear panel. 6 11. Description of Power-lnverter, Mounting PP-3702/ARC-102 (fig. 4) The mounting is installed on a flat sur- face within the aircraft. The mounting consists of four resilient mountings with grounding straps, a f
48、langed bed, an in- verter, and two holddown clamps. The wingnuts on the holddown clamps have holes which are used to safety-wire the clamps when the receiver-transmitter is installed. The inverter, which supplies the 115 volts alternating current (at) 400 cycles per second (cps) to the receiver- tra
49、nsmitter, is attached to the rear of the mounting. The rear of the mounting also contains the 60-pin jack, the guide pin, the holddown pin, and the grounding pin. The aircraft electrical wiring is connected to the mounting through a wiring access hole in the rear of the mounting. 12. Additional Equipment Required The following equipment is not supplied Figure 3. Control unit. Figure 4. Power-Inverter, Mounting PP-3702/ARC-102. 7 as part of the radio set but is required to provide a complete operational installa- tion in an aircraft: a. Primary Power. A source o
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