ITU-R P.684-6-2012
Prediction of field strength at frequencies below about 150 kHz

Standard No.

ITU-R P.684-6-2012

Release Date

2012

Published By

International Telecommunication Union (ITU)

Status

Be replaced

Replace By

ITU-R P.684-2016

Latest

ITU-R P.684-2016

Replace

ITU-R P.684-6-2009

Scope

Two methods are available for theoretically calculating the field strength of ELF, VLF and LF signals.It may be noted that the information in this Recommendation includes values of f cos i exceeding 150 kHz. The use of this information for frequencies exceeding 150 kHz is not recommended. Recommendation ITU-R P.1147 gives information for frequencies above 150 kHz.

ITU-R P.684-6-2012 Referenced Document

• ITU-R P.1147 Prediction of sky-wave field strength at frequencies between about 150 and 1 700 kHz
• ITU-R P.1239 ITU-R reference ionospheric characteristics
• ITU-R P.368 Ground-Wave Propagation Curves for Frequencies between 10 kHz and 30 MHz
• ITU-R P.832 World atlas of ground conductivities*， 2015-07-01 Update

ITU-R P.684-6-2012 history

• 2016 ITU-R P.684-2016 Prediction of field strength at frequencies below about 150 kHz
• 2012 ITU-R P.684-6-2012 Prediction of field strength at frequencies below about 150 kHz
• 0000 ITU-R P.684-6-2009