M51 天线及其馈线 标准查询与下载

SJ 2534.10-1986 天线测试方法.功率增益和方向性的测量

本标准适用于天线功率增益和方向性的测量。

Test procedures for antennas--Measurement of power gain and directivity

SJ 2534.8-1986 天线测试方法.相位测量

本标准适用于天线的相位测量。

Test procedrues for antennas--Phase measurement

ITU-R REPORT BT.482-1-1986 家用陆地传输器信号接收中个人和集体天线系统特征

This report apllies to alternal system for individual and collective use designed to receive television broadcast in band 8(VHF) and 9(UHF)and equiptmeny associated with this system.

Recommended characteristics for collective and individual antenna systems for domestic reception of signal from terrestrial transmitters

ITU-R INFORME BT.482-1 SPANISH-1986 集体和个人天线系统的推荐特性

RECOMMENDED CHARACTERISTICS FOR COLLECTIVE AND INDIVIDUAL ANTENNA SYSTEMS FOR DOMESTIC RECEPTION OF SIGNALS FROM TERRESTRIAL TRANSMITTERS

CSA S37-M86-CAN/CSA-1986 天线,天线柱和支架

Canadian Standards Association (CSA) standards are developed through a consensus standards development process approved by the Standards Council of Canada. This process brings together volunteers representing varied viewpoints and interests to achieve co

Antennes, Pylones Et Supports D碅ntenne

NAVY MIL-A-28893-1985 AN/SRA-56, AN/SRA-57, AN/SRA-58天线耦合器组

This specification.covers the design, performance, and testing of a 1kilowatt (kW) (aver& 2 kW peak envelope power (PEP) high frequency (HF) transmit Antenna Coupler Group,

ANTENNA COUPLER GROUP, AN/SRA-56, AN/SRA-57, AN/SRA-58

SJ 2534.14-1985 天线测试方法.阻抗测量

本标准适用于天线的阻抗测量。

Test procedures for antennas--Measurement of impedances

SJ 2534.9-1985 天线测试方法.极化测量

本标准适用于天线的极化测量。

Test procedures for antennas--Polarization measurement

SJ 2534.6-1985 天线测试方法.天线测试场的操作

本标准适用于天线测试场的操作。

Test procedures for antennas--Antenna-range operation

SJ 2534.5-1985 天线测试方法.特殊测量方法

本标准包括测量天线特性的一些特殊方法。

Test procedures for antennas--Special measurement techniques

SJ 2534.2-1985 天线测试方法.天线测试场的设计

本标准适用于天线测试场的设计。

Test procedures for antennas--Antenna-range design

SJ 2534.4-1985 天线测试方法.天线测试场的鉴定

本标准适用于天线测试场的鉴定。

Test procedures for antennas--Antenna-range evaluation

NAVY MIL-C-28858 A-1985 OA-9123/SRC天线耦合器组

This specif ication covers a shipboard tuned antenna coupler group (multicoupler) hereinaft exerred to as the multicoupler, used to couple a group o f transmitters, receivers, transceivers, or combinations thereof, to acomn antenna for operation in the frequency range of 225.000 megahertz (MHz) t o 399.975 MHz.

COUPLER GROUP, ANTENNA, OA-9123/SRC

NAVY MIL-A-28880-1984 AN/SRA-49( )天线耦合器组

This specification covers the design, performance, and testing of the high frequency(HF) antenna coupler group, hereinafter referred to as the antenna coupler group, for use aboard surface ships for general communications pur oses.

ANTENNA COUPLER GROUP, AN/SRA-49( )

NAVY MIL-A-28880 (1)-1984 AN/SRA-49( )天线耦合器组

This amendment forms a part of Military Specification MIL-A-28880(EC), dated 30 March 1984,and is approved for use by the Naval Electronic Systems Comnand, Department of the Navy, and is available for use by all Departments and Agencies of the Department of Defense.

ANTENNA COUPLER GROUP, AN/SRA-49( )

SJ/Z 9068-1987 天线放电装置

1.1 本标准适用于符合《国家电气法规》的无线电和电视接收设备以及业余无线电发射和接收设备的天线放电装置。 1.2 本标准所指的天线放电装置包括间隙式、固定电阻式或其他泄放元件型式，或由上述元件组合而成的型式。放电装置跨接于天线输入端和地端之间。

Antenna discharge unit

NAVY MIL-A-28729 B (2)-1981 CU-1382( )天线耦合器组(HF, BB宽动态范围)

ANTENNA COUPLER GROUP, CU-1382( ), (HF, BB, WIDE DYNAMIC RANGE)

ANTENNA COUPLER GROUP, CU-1382( ), (HF, BB, WIDE DYNAMIC RANGE)

NAVY MIL-C-24219 A (1)-1979 四通道自动调谐AN/SRA - 33天线耦合器

This amendment forms a part of Military Specification NIL-C-24219A(EC) dated 8 May 1970

COUPLER, ANTENNA, AN/SRA - 33, FOUR CHANNEL AUTOMATICALLY TUNED

ITU-T HDBK PTL CHAPTERS 6, 7 AND 8-1978 电信线路的保护和雷电放电装置(第6,7,8章)

The purpose of the protection measures against lightning is to reach a balance between the cost of protecting lines and plant from lightning damage and the cost of repair and the tolerable number of faults (see Chapter i), in a given area. These costs wili depend on the number of thunderstorm days per year (keraunic level),soil resistivity and the degree of shielding provided by buildings,water pipes,and metallic structures in general.A classificationof zones according to the risk of lightning strikes appears to be useful.It is not possible,however,to make a universally valid classification solely in terms of the number of thunderstorm days per year,because the effect of lightning on telecommunication cables (which is the real criterion)differs according to the other factors involved, including the local earth resistivity and the topographical situation. A relatively low keraunic level may therefore give rise to a low fault rate in one region but to a high fault rate in another.Each country must make its own local observations to determine the relation between the keraunic level in their areas and the fault liability, and to classify their zones accordingly.

Protection of Telecommunication Lines and Equipment Against Lightning Discharges (Chapters 6, 7 and 8)

ARMY MIL-C-55693 (3)-1976 CU-942()/AR.CU-1894()/AR天线耦合器及AS-1703()/AR天线

Delete "Preproduction" and replace with "First Article" wherever mentioned in the Specification.

COUPLERS, ANTENNA CU-942( )/AR, CU-1894( )/AR AND ANTENNA AS-1703( )/AR