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High Frequency Propagation Models

Disclaimer: The downloads made available through links on this page contain software developed by NTIA. NTIA does not make any warranty of any kind, express, implied or statutory, including, without limitation, the implied warranty of merchantability, fitness for a particular purpose, non-infringement and data accuracy. NTIA does not warrant or make any representations regarding the use of the software or the results thereof, including but not limited to the correctness, accuracy, reliability or usefulness of the software or the results. You can use, copy, modify, and redistribute the NTIA-developed software upon your acceptance of these terms and conditions and upon your express agreement to provide appropriate acknowledgments of NTIA's ownership of and development of the software by keeping this exact text present in any copied or derivative works.

By clicking any link on this page to download software, you acknowledge that you have read the above disclaimer.


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 contact Chris Behm.


The following HF propagation models for Windows PCs are available from NTIA/ITS:

  • HFWIN32- (05.0119W) Windows-NT/2000/XP & 95/98/ME 32-bit versions of ICEPAC / VOACAP / REC533
    • Uses Tarma Installer©.
    • Updated with new compiler, much faster than 99.0201 or previous versions.
  • HFCC.zip- Antennas used by the ITU & HFCC
    • These antennas are useful for HF Broadcasters and their coordination meetings.

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.

PCHFreadme.txt file describes installation and registration procedures.

For more information contact Chris Behm.