ITU-R OPINION 23-6-1999
Observations Needed to Provide Basic Indices for Ionospheric Propagation

Standard No.

ITU-R OPINION 23-6-1999

Release Date

1999

Published By

International Telecommunication Union (ITU)

Latest

ITU-R OPINION 23-6-1999

Scope

that the Sunspot Index Data Centre (SIDC) sponsored by the Observatoire Royal de Belgique and the Federation of Astronomical and Geophysical Data Analysis Services (FAGS) be encouraged to continue determination and distribution of the international relat

ITU-R OPINION 23-6-1999 history

• 1999 ITU-R OPINION 23-6-1999 Observations Needed to Provide Basic Indices for Ionospheric Propagation