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- 【Organization】ITU
- 【Document #】ITU-T J.21
Performance Characteristics of 15 kHz-Type Sound-Programme Circuits - Circuits for High Quality Monophonic and Stereophonic Transmissions - Television and Sound Transmission (Study Group 9) 12 pp
- 【Date】1994/1/1
- 【Language】English
- 【Status】Active
- 【Organization】ITU
- 【Document #】ITU-R PN.452-6
Prediction Procedure for the Evaluation of Microwave Interference between Stations on the Surface of the Earth at Frequencies Above About 0.7 GHz
- 【Date】1994/1/1
- 【Language】English
- 【Status】Active
- 【Organization】ITU
- 【Document #】ITU-R F.698-2
Preferred Frequency Bands for Trans-Horizon Radio-Relay Systems
- 【Date】1994/1/1
- 【Language】English
- 【Status】Active
- 【Organization】ITU
- 【Document #】ITU-R PN.1057
Probability Distributions Relevant to Radiowave Propagation Modelling
- 【Date】1994/1/1
- 【Language】English
- 【Status】Active
- 【Organization】ITU
- 【Document #】ITU-R F.1095
Procedure for Determining Coordination Area between Radio-Relay Stations of the Fixed Service
- 【Date】1994/1/1
- 【Language】English
- 【Status】Active
- 【Organization】ITU
- 【Document #】ITU-T T.611
Programming Communication Interface (PCI) APPLI/COM for Facsimile Group 3, Facsimile Group 4, Teletex, Telex, E-Mail and File Transfer Services - Terminals for Telematic Services - Study Group 8; 230 pp; ETS 300 243-1
- 【Date】1994/1/1
- 【Language】English
- 【Status】Active
- 【Organization】ITU
- 【Document #】ITU-R PN.618-3
Propagation Data and Prediction Method Required for the Design of Earth-Space Telecommunications Systems
- 【Date】1994/1/1
- 【Language】English
- 【Status】Active
- 【Organization】ITU
- 【Document #】ITU-R PN.681-1
Propagation Data Required for the Design of Earth-Space Land Mobile Telecommunications Systems
- 【Date】1994/1/1
- 【Language】English
- 【Status】Active
- 【Organization】ITU
- 【Document #】ITU-R P.1060
Propagation Factors Affecting Frequency Sharing in HF Terrestrial Syatems
- 【Date】1994/1/1
- 【Language】English
- 【Status】Active
- 【Organization】ITU
- 【Document #】ITU-R PN.453-4
Radio Refractive Index: Its Formula and Refractivity Data
- 【Date】1994/1/1
- 【Language】English
- 【Status】Active