致力于连通世界

SDG DIGITAL

Observations needed to provide basic indices for ionospheric propagation

Shopping cart Shopping cart

You are here 主页 > ITU Publications > Radiocommunication (ITU-R) > ITU-R Opinions > Observations needed to provide basic indices for ionospheric propagation

Opinion 23
Main
Number
 Title Status
Op.23-7(2016)
  		Observations needed to provide basic indices for ionospheric propagation  
 		In force (Main)
 
 
Previous versions
Number
 Title Status
Op.23-6 (1999)
  		Observations needed to provide basic indices for ionospheric propagation  
 		Superseded

© 国际电联年版权所有

回到页首