P.1409�:�Propagation data and prediction methods for systems using high altitude platform stations and other elevated stations in the stratosphere at frequencies greater than about 0.7 GHz

�

Fran�ais� Espa�ol

�

Home : ITU-R : Publications : Recommendations : P�Series : P.1409

Recently posted�-� Search Recommendations

�

P.1409�:�Propagation data and prediction methods for systems using high altitude platform stations and other elevated stations in the stratosphere at frequencies greater than about 0.7 GHz �

Recommendation P.1409

Approved in 2023-08

Managed by R00-SG03

Main
Number	Title	Status	Questions
P.1409-3 (08/2023) �	Propagation data and prediction methods for systems using high altitude platform stations and other elevated stations in the stratosphere at frequencies greater than about 0.7 GHz �	In force (Main)	N/A �
� �
Previous versions
Number	Title	Status	Questions
P.1409-2 (09/2021) �	Propagation data and prediction methods for systems using high altitude platform stations and other elevated stations in the stratosphere at frequencies greater than about 0.7 GHz �	Superseded	N/A �
P.1409-1 (02/2012) �	Propagation data and prediction methods for systems using high altitude platform stations and other elevated stations in the stratosphere at frequencies greater than about 1 GHz �	Superseded	N/A �
P.1409-0 (10/99) �	Propagation data and prediction methods required for the design of systems using high altitude platform stations at about 47 GHz �	Superseded	N/A �

�