MUF Predictor

Quick and easy HF predictions in your pocket!

**** UPDATE NOVEMBER 2021: The app cannot update the SSN at the moment and that makes the predictions not relevant. I am working on a new app which I hope to have it published by the end of the year and will solve this problem once and for all. Thanks for all your emails! ****

A simple application to assist ham radio operators in everyday HF propagation prediction.The application calculates MUF (Maximum Usable Frequency) and LUF (Lowest Usable Frequency) to any location in the world based on SSN data.

The application is based on MicroMUF, developed in 1984 by Raymond Fricker from BBC External Service.

Although the algorithms used in MicroMUF have some limitations compared to other more advanced algorithms (like IONCAP), the calculations are very accurate for everyday use in the HF range (2-30Mhz).

The application contains the complete and updated DXCC countries list, so that you do not have to enter latitude/longitude but type directly the DXCC prefix or country name for the transmitter and receiver location, while the SSN is retrieved automatically from NOAA site if required.

Most often used propagation paths can be saved so that a prediction can run on them later.There is no limit to the number of paths stored into the application.

**** Due to repeated unavailability the SSN sources the latest version 1.91 contains the required data embedded in the application. I hope to quickly resolve the issue once and for all. Version 1.91 may be the last update of the app as I am working on a completely new and different replacement app. Stay tuned! Thanks, Nick , SV1DJG****