M62 广播、电视网结构 标准查询与下载

ITU-R INFORME BS.458-5 SPANISH-1990 低频(LF),中频(MF)和高频(HF)广播的系统特点

Characteristics of systems in LF, MF and HF broadcasting

ITU-R BO.566-3-1990 (撤回)用于广播的空间通信技术的使用有关的术语.第10/11部分-术语

A radiocommunication service in which signals transmitted or retransmitted by space stations are intended for direct reception (Note 2) by the general public.

(WITHDRAWN) Terminology Relating to the Use of Space Communication Techniques for Broadcasting - Section 10/11S - Terminology

ITU-R INFORME P.239-7 SPANISH-1990 使用频率范围30至1000 MHz的广播服务所需的传播统计

PROPAGATION STATISTICS REQUIRED FOR BROADCASTING SERVICES USING THE FREQUENCY RANGE 30 TO 1000 MHz

ITU-R REPORT M.1023-1-1990 陆地移动业务和低于1 GHz的广播业务(电视)之间的频率共享

The WARC-79 increased the number of frequency bands that might be shared between the broadcasting service and the mobile service below 1 GHz. If the same portion of the frequency spectrum is allocated to two or more services, sharing may be effected in one of the following ways：simultaneously use of the same parts of the shared bands by different services, but in separate geographical areas. This Report examines the case of sharing in separate geographical areas as in the sectence above.

Frequency sharing between the land mobile service and the broadcasting service (television) below 1 GHz

ITU-R REPORT BS.1201-1990 使用单通道的短波(HF)广播发射机编号

The Recommendation describes the number of HF sound broadcasting transmitters using a single channel.

Number of HF sound broadcasting transmitters using a single channel

ITU-R REPORT BS.945-2-1990 多址干扰的评估方法

The usable field strength is independent of the characteristics of the wanted transmitter and does not normally exhibit large variations with location. It can be determined for any location of interest.

Methods for the assessment of multiple interference

ITU-R BS.704 FRENCH-1990 计划目的下使用的调频伴音广播接收器的特性.10B部分.频率.波段8甚高频(VHF)和波段9特高频无线电波(UHF)的调制伴音广播

This Recommendation considering that frequency assignment plans must of necessity take into account the characteristics of receivers; that the range of performance of receivers used by the public is very large; that a reference receiver with characteristics based on currently available receivers may be useful in a planning context; that standards for reference receivers should therefore be defined, which can be taken as a basis for frequency planning purposes; that these standards need to be taken into account by receiver manufacturers.

Characteristics of FM Sound Broadcasting Reference Receivers for Planning Purposes

ITU-R BS.703 FRENCH-1990 计划目的下使用的单频调幅广播接收器的特性.10A-1部分.振幅.伴音调制.波段5低频射频(LF)波段6中频射频(MF)及波段7高频射频(HF)的广播

This Recommendation considering that frequency assignment plans must of necessity take into account the characteristics of receivers;.that the range of performance of receivers used by the public is very large; that a reference receiver with characteristics based on currently available receivers may be useful in a planning context; that standards for reference receivers should therefore be defined, which can be taken as a basis for frequency planning purposes; that these standards need to be taken into account by receiver manufacturers.

Characteristics of AM Sound Broadcasting Reference Receivers for Planning Purposes

ITU-R REPORT M.929-2-1990 在87-108 MHz波段的广播业务以及在108-136 MHz波段的航空业务的兼容性

This Report about compatibility between the broadcasting service in the band of about 87-108 MHz and the aeronautical services in the band 108-136 MHz.

Compatibility between the broadcasting service in the band of about 87-108 MHz and the aeronautical services in the band 108-136 MHz

ITU-R REPORT BS.464-5-1990 调频广播在第八波段(甚高频)发射的极化

This Report is intended to provide broadcasters with additional data from which they may more easily choose the most approiate polarization to use for any new service, according to the individual circumstances.

Polarization of emissions in frequency-modulation broadcasting in band 8 (VHF)

ITU-R BS.704 SPANISH-1990 计划目的下使用的调频伴音广播接收器的特性.10B部分.频率.波段8甚高频(VHF)和波段9特高频无线电波(UHF)的调制伴音广播

This Recommendation considering that frequency assignment plans must of necessity take into account the characteristics of receivers; that the range of performance of receivers used by the public is very large; that a reference receiver with characteristics based on currently available receivers may be useful in a planning context; that standards for reference receivers should therefore be defined, which can be taken as a basis for frequency planning purposes; that these standards need to be taken into account by receiver manufacturers.

Characteristics of FM Sound Broadcasting Reference Receivers for Planning Purposes

ITU-R BS.703 SPANISH-1990 计划目的下使用的单频调幅广播接收器的特性.10A-1部分.振幅.伴音调制.波段5低频射频(LF)波段6中频射频(MF)及波段7高频射频(HF)的广播

This Recommendation considering that frequency assignment plans must of necessity take into account the characteristics of receivers;.that the range of performance of receivers used by the public is very large; that a reference receiver with characteristics based on currently available receivers may be useful in a planning context; that standards for reference receivers should therefore be defined, which can be taken as a basis for frequency planning purposes; that these standards need to be taken into account by receiver manufacturers.

Characteristics of AM Sound Broadcasting Reference Receivers for Planning Purposes

NF C90-001/A1:1988 NF C 90-001-1987补充件1

NF C 90-001-1987 Supplement 1

NF C90-001:1987 广播和通信.D2-mac/信息包系统规范

Broadcasting and telecommunication. Specification of the D2-mac/packet system.

ITU-R INFORME P.228-3 SPANISH-1986 甚高频和超高频广播服务包括电视在内的磁场强度测量

Measurement of field strength for VHF (metric) and UHF (decimetric) broadcast services, including television

ITU-R REPORT BS.1058-1986 第七波段(高频)广播所需的最小音频(AF)和射频(RF)信噪比

The RF signal-to-noise ratio at the receiver input depends, apart from other factors, on audio frequency S/N ratio for a defined grade of performance. Since the majority of the physiological and psychological factors ultimately influence only the AF signal-to-noise ratio, a series of subjective listening tests were carried out in India and the USSR to assess the minimum acceptable value of this ratio, from which the equivalent RF signal-to-noise ratio at the input of the receiver may also be derived.

Minimum AF and RF signal-to-noise ratio required for broadcasting in band 7 (HF)

ITU-R RAPPORT BS.1065 FRENCH-1986 频率调制声音广播发射机的射频频谱

THE RF SPECTRUM OF FREQUENCY-MODULATION SOUND-BROADCASTING TRANSMITTERS

ITU-R INFORME BS.1058 SPANISH-1986 7 高频(HF)频段广播最小自动对焦和射频信噪比

Minimum AF and RF signal-to-noise ratio required for broadcasting in band 7 (HF)

ITU-R INFORME BS.1063 SPANISH-1986 中频(MF)广播再辐射的预计和控制

Prediction and control of re-radiation in MF broadcasting

ITU-R INFORME BS.1065 SPANISH-1986 声音广播发射机频率调节的射频频谱

THE RF SPECTRUM OF FREQUENCY-MODULATION SOUND-BROADCASTING TRANSMITTERS