1、F-W-/S MIL-R-288871EC) 5 October 1984 MILiTARY -SPECIFICATION RADIO GROUP, VLF, LF, FtF, AND HF This specification is approved for use by the Naval Electronic Systems Comand, Department of 1. SWE 1.1 Scope. This specification covers the performance, design, development, and test requirements the Nav
2、y, and is available for use by all Departments and Agencies of the Department of Defense. for the ve-w frequency (VLF), low frequency (LF), medium frequency (MF), and high frequency (HF) radio subsystem, hereinafter referred to as the Radio Group (RG), . 2. APPLICABLE DOCUMENTS 2.1 Government docume
3、nts. 2.1.1 Specifications, standards, and handbooks. Unless otherwise specified, the following specifications, standards, and handbooks of the issue listed in that issue of the Departmen-t of Defense Index of Snecifications and Standards (DODISSI soecified in the solicitation form a part of this spe
4、cification to the extent specified herein. f SPECIFICATIONS MILITARY MIL-S-901 MIL-P- 15024 MIL-E-16400 MIL-E-17555 NIL-W-21965 MIL-E-21981 MIL-H-46855 Shock Tests, H.I. (High-Impact), Shipboard Machinery, Equipment And Systems, Requirements For Plates, Tags And Bands For Identification Of Equipment
5、 Electronic, Interior Comnunication, And Navigation Equipment, Naval Ship And Shore: For Electronic And Electrical Equipment Accessories And Repair Parts; Packaging And Packing Of Water Cooling Of Ship Board Electronic Equipment; General Specification For Electronics Type Designations, Identificatio
6、n And Plates And Markings; Requirements For Human Engineering Requirements For Military Systems, Equ ipment And Faci 1 it ies General Specification STANDARDS MILITARY MIL-STD-12 MIL-STD-105 MI L-STD- 108 MIL-STD-109 MIL-STD-167-1 MIL-STD-188-203-1 MIL-STD-454 Abbreviations For Use On Drawings And In
7、 Specifications, Standards, and Technical Documents Sampling Procedures And Tables For Inspection By Attributes Definitions Of And Basic Requirements For Enclosures For Electric And Electronic Equipment Quality Assurance Terms And Definitions Mechanical Vibrations Of Shipboard Equipment (Type-I Envi
8、ronmental And Type II-Internally Excited) Subsystem Design And Engineering Standards For Tactical Data Information Link (TADIL) A Standard General Requirements For Electronic Equipment , Beneficial comments (recommendations, additions, deletioils) and any pertinent data which may be of use in improv
9、ing this document should be addressed to: Comand (ELEX-8111) , Washington, DC 20363, by using the self-addressed Standardization Document Imorovement Prooosal IDD Form 1426) aoeearinq at the end of this document, or by letter. Comander, Naval Electronic Systems FSC 5820 K , THIS DOCUMENT CONTAINS *?
10、 Transmit and Receive - 2182 kHz Ship-to-shore and shore-to-ship voice and teletype networks. Ship-to-ship, ship-to-air, and air-to-ship, including voice, teletype (TTY) , and 3.1.2.2 Primary functions. The primary functions of the RG are as specified in a and b: a. b. To receive voice and data from
11、 the terminal equipment groups, convert voice and To receive via antenna equipments the RF signals from other off-ship radio system data to RF, and transmit them via the appropriate antenna equipment to other off-ship radio system equipments. equipments, demodulate, and route these signals to the te
12、rminal equipment for qrocessing and use. specified in 3.1.3.1 and 3.1.3.2. 3.1.3 Subsystem flow diagrams and allocations. RG flow diagrams and allocations shall be as 3.1.3.1 Functional flow diagrams (FFDs). The FFDs for the RG and its functional groups are shown in FIGURE 1 and FIGURE 2. TRANSMIT (
13、NARROWBANE AND BROADBAND) r- I I I I I r- i SPECIFICATION) I I, -_-_ J I I CMCS (SEE NOTE) I (NOT A REQUIREMENT I OF THIS NOTE: Communication monitor and control system. = P FIGURE 3; Trm-smit FFD. 4 I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
14、flIL-R-27 58 W 3399306 0356055 3 4 N TDS RECEIVF MIL-R-28887( EC) JAND L I GENERAL PURPOSE i I FIGURE 2. Receive FFD. 3.1.3.2 Functional allocations. The two primary subsystems, transmit and receive, shall provide the capabilities specified in a and b: a. The transmit subsystem shall have the capabi
15、lity to provide separate and simultane- ously usable channels in the frequency range of 2.0 MHz to 29.9999 MHz (see the APPENDIX for exact number of transmitters, exciters, and specific modes of operations). When applicable, one or more 1 kW narrowband channels shall also be included, again providin
16、g upper sideband (USB), lower side- band (LSB), and independent sideband (ISB) modes of operation. Each channel of operation shall be capable of power level control in 15 separate steps of 3 decibels (dB) and a sixteenth step for OFF. Power level control shall be available both manually and via bus
17、control. b. The receive subsystem shall have the capability of providing separate and simultaneously usable channels (see the APPENDIX for exact number of receivers, frequency ranges, and specific modes of operations). Provisions shall be made to operate the critical functional groupsof the system i
18、n two frequency bands, namely 2.0 MHz to 29.9999 MHz for the transmit group and 14.0 kHz to 29.9999 MHz for the receive group. 3.1.4 Interface definitions. Interface definitions shall be as specified in 3.1.4.1 through 3.1.4.3.6. 3.1.4.1 External interfaces. The RG primarily shall provide for an int
19、erface with nine subsystems as specified in a through i: a. b. There shall be a transfer of baseband signals between the RG and the interfacing equipment. Where applicable, the RG shall receive test and control signals from the CMCS and pass status and monitoring information back to the CMCS. The CM
20、CS shall provide control and monitoring of the MIL-STO-1553 bus-operated and controlled RG equipments. implemented in dual redundant MIL-STD-1553 configuration. Four buses shall be c. The RG shall receive prime frequency reference signal from an external standard. d. The RG shall receive prime power
21、 from the ships electrical subsystem. e. The RG shall receive chilled water and cooling air from the ships auxiliary f. The RG shall transmit and receive signals via the communication antennas. g. The RG shall interface with the ships hull directly via physical installation. h. The RG transmit subsy
22、stem shall provide for an interface with an AN/SSQ-82 Multiplex i. subsystem. Unit for Transmission Elimination (MUTE) in accordance with MIL-STD-1633. This interface shall provide an external means of establishing an emission control (EMCON) condition. The RG receive subsystem shall provide for an
23、interface with the AN/TRQ-35(V) Tactical Frequency Management System equipments. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-2887 58 999990b OL5605b O W - MIL-R-28887 3.1.4.2 Signal interfaces. Signal interfaces shall be as specified in 3
24、.1.4.2.1 through 3.1.4.2.4.4. 3.1.4.2.1 Transmit signal interfaces. Transmit signal interfaces shall be as specified in 3.1.4.2.1.1 Transmit RF interface. The design shall accommodate the antenna types specified 3.1.4.2.1.1 through 3.1.4.2.1.3. in a and b: a. b. Broadband antenna set with a voltage
25、standing wave ratio (VSWR) of 5:1, or 9-m to 10.50-111 (30-ft to 35-ft) whip antennas for narrowband applications over less, over the frequency range of 2.0 MHz to 29.9999 MHz. the same frequency range. twisted pairs, balanced to ground, with a minimum longitudinal balance of 30 dB. 3.1.4.2.1.2 Tran
26、smit audio interface. THe audio signal lines shall consist of shielded 3.1.4.2.1.3 Keyline interface. The transmitter ON keying condition of the keyline shall have a closure of not more than 10 ohms resistance (measured at the input connector) and a maximum current capability of 100 milliamperes. An
27、 OFF keying or open keyline shall have a minimum resistance of 1 megohm. Transients caused by on-keyed or off-keyed conditions shall be settled within a maximum time of 1 millisecond (ms). 3.1.4.2.2 Receive signal interfaces. Receive signal interfaces shall be as specified in 3.1.4.2.2.1 and 3.1-4.2
28、.2.2. 3.1.4.2.2.1 Receive RF interface, The RF interface shall be via the broadband active antenna assembly (BAAA) or equivalent. 3.1.4.2.2.2 Receive audio interface. The signal characteristics for audio signals from the 3.1.4.2.3 CMCS interface. receivers to the terminal equipment shall be as speci
29、fied in 3.2. redundant-configured MIL-STD-1553 internal time division command and response multiplex data bus. All major RG equipments shall contain an appropriate bus coupler to accommodate this interface. The CMCS shal provide automated control for the RG. monitor all built-in-test (BIT) functions
30、 and to maintain the current status of all bus-controlled equipment. Where applicable, the RG is accessed to the CMCS via a dual-standby, The interface shall enable the CMCS to 3.1.4.2.4 Ships service interfaces. Shipls service interfaces. shall be as specified in 3.1.4.2.4.1 through 3.1.4.2.4.4. 3.
31、1.4.2.4.1 Power interface. Characteristics of the prime power shall be as specified in Section 300 of DoD-STD-1399 for Type I power; the RG shall comply with all the requirements and constraints thereof. The RG shall conform to all functional characteristics when operating from this prime power. 3.1
32、.4.2.4.2 Cooling water interface. When required, cooling water shall be in accordance with MIL-W-21965. 3.1.4.2.4.3 Cooling air interface. Cooling air shall be supplied to the cabinets at an inlet temperature in accordance with the Operating temperature range paragraph of MIL-E-16400, Range 4. 3.1.4
33、.2.4.4 Physical interface. Th RG shall be designed in accordance with RS-310-C-77 and chal 1 consist of physically integrated racks or cabinets, cabinets or racks interfacing with pallets or the ships hull for the LHD-1 configuration shall not exceed 12.96 square meters (m2) (144 square feet (ft) in
34、 the Radio Transceiver Room, 4.86 m2 (54 ft2) in the Communications Technical Control Room, 0.45 m in SSES. required shall be reduced accordingly, except that an additional 0.90 m allocated in the Communications Technical Control Room for a remote control and monitor console. Maximum space available
35、 for equipment 2 2 2 (5 ft ) in METRO, and 0.45 m For other ship classes having a lesser requirement as shown in the APPENDIX, space 2 2 (10 ft ) shall be (5 ft2) 3.1.4.3 Internal interfaces. Internal interfaces shall be as specified in 3.1.4.3.1 through 3.1.4.3.1 RF interfaces. 3.1.4.3.6. The RF in
36、terfaces between equipments in the RG shall be by 50-ohm coaxial lines. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-R-28887(EC) 3.1.4.3.2 Control sfgnal interface. Where applicable, remote control for the equipments in the RG shall utilize
37、dual-redundant MIL-STD-1553 bus format (two independent receive and two independent transmit). provided from a central location in the Communications Technical Control Room. directly or indirectly controlled from the Communications Technical Control Room. shall also be capable of local (manual) cont
38、rol. SSES shall only be local ly (manual ly) control led. For ship classes without an automated CMCS, manual remote control shall be 3.1.4.3.3 Operational interface. The bus-controlled equipments that comprise the RG shall be These equipments Where applicable, the equipments in METRO and 3.1.4.3.4 P
39、hysical. Individual equipments, other than dummy loads, shall be cabinet or rack mounted. 3.1.4.3.5 RF cabling. 3.1.4.3.6 Cooling. Cable lengths for RF cables internal to the RG shall be kept to a minimum. Maximum losses in RF cables shall be 0.5 dB at 30 MHz. Internal cooling shall be in accordance
40、 with MIL-E-16400 for heat removal methods of cabinet or rack-mounted equipment when using the compartment air as the heat sink. The RG shall be operable in a degraded condition (one-half of the normal transmitter power output) for at least 1 hour without chill water cooling. 3.1.5 Operational and o
41、rganizational concepts. The operational configuration of the RG is dictated by the requirements of the ships mission. In order to facilitate the execution of the mission the RG shall be designed to the maximum extent practicable as a centrally controlled system. The man/machine interface at the RG s
42、hall permit easy access to the controls to minimize the workload for the operator. required RG configuration setups. either manually or via computer from a central point located in the Communications Technical Control Room. The equipment in thesetwo rooms shall have the same equipment capability (MI
43、L-STD-1553 capable) as that used in the remaining RG equipments, but shall not be connected to a MIL-STD-1553 bus. of these non-bus-connected equipments shall be one-for-one interchangeable with the equipments used on the bus. 3.1.5.2 Transmit subsystem. All transmitter channels shall be capable of
44、remote operator control, either manually or via computer from a central point located in the Communications Technical Control Room. The total number of channels required is specified in the APPENDIX. An expansion capability shall be provided by prewired cabinets or racks that shall accept a minimum
45、of one additional unit each. equipments. for narrowband operation. The narrowband channels shall operate through antenna coupler groups which are not required by this specification. for BLAG application. capable of NTDS operation (at least one each on the BLAG and one each on a narrowband channel).
46、All channels shall be USB or LSB capable. specified in the APPENDIX. Each receiver located in the Communications Technical Control Room shall be capable of remote control, either manually or via computer through a MIL-STD-1553 bus. units not located in the Communications Technical Control Room shall
47、 contain MIL-STD-1553 bus capable equipment but shall not be connected to the computer. manual operation (local) only. to 500 kHz frequency range, or additional channels shall be provided for this requirement. channels located in the Communications Technical Control Room shall be capable of USB or L
48、SB operation. located in METRO shall be capable of USB or LSB operation. Channels located in SSES shall be capable of ISB operation. capability shall be provided by prewired cabinets or racks that shall accept a minimum of one additional unit each. These future growth capabilities shall also conside
49、r bus addressing, and so forth. Under automated control, one operator shall be able to perform all All radio circuits shall be capable of remote operator control .3.1.5.1 System operation. The only exceptions to this shall be the circuits in METRO and in SSES (when applicable). Each Bus addressing, and so forth, shall be considered when addressing these future growth The remaining channels shall be dedicated/available The APPENDIX specifies the minimum number of channels that shall be dedicated/avai
