U.S. Department of Commerce NTIA/ITS
Institute for Telecommunication Sciences
High Frequency Propagation Models
Disclaimer:
The software contained within was developed by an agency of the
U.S. Government. NTIA/ITS has no objection to the use of this
software for any purpose since it is not subject to copyright
protection in the U.S.
No warranty, expressed or implied, is made by NTIA/ITS or the
U.S. Government as to the accuracy, suitability and functioning
of the program and related material, nor shall the fact of
distribution constitute any endorsement by the U.S. Government.
Advertisement:
If you require software changes to meet your needs, a mechanism now exists
where you can easily fund (pay for) the work to be done.
Please view the generic Software Development CRADA
to see the boilerplate agreement.
Requests to modify the ITS HF Propagation Models should be made to:
Chris Behm.
Email: cbehm@its.bldrdoc.gov
Phone: (303) 497-3375.
Notice:
The Department of Commerce has made this HF propagation software available
free of charge, as is from these web pages.
Please understand there is no general funding to assist the users of this software.
Users desiring program enhancements are encouraged to read the CRADA above and contact NTIA/ITS.
The following HF propagation models for Windows PCs are available from NTIA/ITS:
Updated with new compiler, much faster than 99.0201 or previous versions.
HFCOVMAP
- Service Area Coverage Map program for IBB (VOA)
This is a special program for IBB and is probably useless for anyone else.
IBBPLAN
- Area Coverage Planning program for IBB (VOA)
This is a special program for IBB and is probably useless for anyone else.
It must be installed with the latest HFWIN32 release to work properly.
HFWIN16 - (97.0428W) Windows-3.x 16-bit version of ICEPAC / VOACAP / REC533
The 16-bit version can not be changed. Please upgrade you PC to Windows 95/98 or Windows-NT.
DOS versions -
DOS versions are still available here (use only out of desperation).
View the News files
that detail the changes made for each version of the software. (Since Dec 1992)
ICEPAC is IONCAP with ICED profile model developed by NTIA/ITS. VOACAP is IONCAP modified by USIA/VOA for broadcasting.
Get source of VOACAP here. REC533 is the ITU-R PI.533 model for international HF planning.
Get source of REC533 here. readme.txt file describes installation and registration procedures.
Other useful links:
New:
User's Guide - Signal-to-Noise Predictions Using VOACAP. Space Environment Center for real-time monitoring/forecasting of solar & geophysical events. Ionosphere Home Page from the National Geophysical Data Center.
Current and past Ionospheric indicies from the National Geophysical Data Center.
Get Max Kp from the 27 Day Outlook from the Space Environment Center. ITU HF web page
contains Rec 705 antenna and other ITU related info.
