Standard frequency and time signal-satellite service


Standard frequency and time signal-satellite service is, according to Article 1.54 of the International Telecommunication Union's Radio Regulations, defined as A radiocommunication service using space stations on earth satellites for the same purposes as those of the standard frequency and time signal service.
An example to this were experiments of time synchronisation onboard International Space Station. However, in accordance to the ubiquitous availability, GNSS-satellite signals will be used in practice.
;See also:

Classification

In accordance with ITU Radio Regulations variations of this radiocommunication service are classified as follows:

Standard frequency and time signal service
The National Physical Laboratory, India is the premier research laboratory in India in the field of physical sciences. NPLI continues to disseminate standard time and frequency signals via geostationary satellite INSAT with an accuracy of 10 ms.

Frequency allocation

The allocation of radio frequencies is provided according to Article 5 of the ITU Radio Regulations.
In order to improve harmonisation in spectrum utilisation, the majority of service-allocations stipulated in this document were incorporated in national Tables of Frequency Allocations and Utilisations which is with-in the responsibility of the appropriate national administration. The allocation might be primary, secondary, exclusive, and shared.
; Example of frequency allocation: