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.
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 and modifications should read the information
provided under Software Modifications.
Software Modifications: If you require software
changes to meet your needs, a mechanism now exists where you can
easily fund 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
The following HF propagation models for Windows PCs are
available from NTIA/ITS:
(05.0119W) Windows-NT/2000/XP & 95/98/ME 32-bit versions of
ICEPAC / VOACAP / REC533
- Now (2Feb04) using Tarma Installer ©.
- Updated with new compiler, much faster than 99.0201 or previous
Antennas used by the ITU & HFCC
- These antennas are useful for HF Broadcasters and their
is IONCAP with ICED profile model developed by NTIA/ITS.
is IONCAP modified by USIA/VOA for broadcasting. Get source of
is the ITU-R PI.533 model for international HF planning. Get source of
readme.txt file describes installation and registration
For more information contact Chris