ITU
搜尋結果：找到 7840 筆資料
- 【組 織】ITU
- 【文件編號】ITU-R BS.641
Determination of Radio-Frequency Protection Ratios for Frequency-Modulated Sound Broadcasting - Section 10B - Frequency-Modulation Sound Broadcasting in Bands 8 (VHF) and 9 (UHF)
- 【日 期】1986/7/1
- 【語 言】English
- 【狀 態】Active
- 【組 織】ITU
- 【文件編號】ITU-R BO.651
Digital PCM Coding for the Emission of High-Quality Sound Signals in Satellite Broadcasting (15 kHz Nominal Bandwidth) - Section 10/11B - Systems
- 【日 期】1986/7/1
- 【語 言】English
- 【狀 態】Active
- 【組 織】ITU
- 【文件編號】ITU-R F.556-1
Hypothetical Reference Digital Path for Radio-Relay Systems Which May Form Part of an Integrated Services Digital Network with a Capacity Above the Second Hierarchical Level - Section 9A - Performance Objectives, Propagation and Interference Effects
- 【日 期】1986/7/1
- 【語 言】English
- 【狀 態】Active
- 【組 織】ITU
- 【文件編號】ITU-R BS.468-4
Measurement of Audio-Frequency Noise Voltage Level in Sound Broadcasting - Section 10C - Audio-Frequency Characteristics of Sound-Broadcasting Signals
- 【日 期】1986/7/1
- 【語 言】English
- 【狀 態】Active
- 【組 織】ITU
- 【文件編號】ITU-R S.481-2
Measurement of Noise in Actual Traffic for Systems in the Fixed-Satellite Service for Telephony Using Frequency-Division Multiplex - Section 4C - Earth Station and Baseband Characteristics - Earth Station Antennas - Maintenance of Earth Stations
- 【日 期】1986/7/1
- 【語 言】English
- 【狀 態】Active
- 【組 織】ITU
- 【文件編號】ITU-R S.482-2
Measurement of Performance by Means of a Signal of a Uniform Spectrum for Systems Using Frequency-Division Multiplex Telephony in the Fixed-Satellite Service - Section 4C - Earth Station and Baseband Characteristics - Earth Station Antennas - Maintenance
- 【日 期】1986/7/1
- 【語 言】English
- 【狀 態】Active
- 【組 織】ITU
- 【文件編號】ITU-R F.612
Measurement of Reciprocal Mixing in HF Communication Receivers in the Fixed Service - Section 3Aa - Technical Characteristics
- 【日 期】1986/7/1
- 【語 言】English
- 【狀 態】Active
- 【組 織】ITU
- 【文件編號】ITU-R BS.639
Necessary Bandwidth of Emission in LF, MF and HF Broadcasting - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF), 6 (MF) and 7 (HF)
- 【日 期】1986/7/1
- 【語 言】English
- 【狀 態】Active
- 【組 織】ITU
- 【文件編號】ITU-R BT.471-1
Nomenclature and Description of Colour Bar Signals - Section 11A - Characteristics of Systems for Monochrome and Colour Television
- 【日 期】1986/7/1
- 【語 言】English
- 【狀 態】Active
- 【組 織】ITU
- 【文件編號】ITU-R BS.638
Terms and Definitions Used in Frequency Planning for Sound Broadcasting - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF), 6 (MF) and 7 (HF)
- 【日 期】1986/7/1
- 【語 言】English
- 【狀 態】Active
