MUF Predictor was a tools app developed by SV1DJG. It was removed from Google Play Apr 16, 2023 and is no longer available for download.
Download Statistics
MUF Predictor had been downloaded 22 thousand times before it became unavailable.
User Ratings
MUF Predictor was rated 3.54 out of 5 stars, based on 170 ratings.
App Information
MUF Predictor was free to download. The APK download size was 754.87 kB. The last available version was 1.91. The last update was on December 4, 2016.
Technical Requirements
MUF Predictor required Android 2.2+ or higher. The app had a content rating of Everyone. The app had been available on Google Play April 2012.
Description
**** 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****
Recent changes: v1.91 - fixed ssn service unavailability v1.9 - fixed a crash after migrating to NOAA's SWPC web services v1.8 - Changed propagation charts to be QST-like - Added predefined DX areas like QST's "How's DX" - Added 360 degrees prediction - Fixed broken link on solar data update - Fixed a crash v1.5 - Changed layouts to dashboard style - Added an option to save favorite paths - Added support for tablets and landscape orientation - The application can be moved to SD Card
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★★★★★
at last a propagation prediction app it was about time someone to write a propagation prediction app.does not matter if its not ioncap!works great!
★★★★★
MUF Predictor It great have been a DXer for 25 years.Use it often to predict possible propagation paths. Quite accurate nice job. 73 Gud DX
★★★★★
No help/faq avail It would be nice if there was some sort of help or a faq for this.
★★★★★
simple and useful I really like this app, no bells and whistles but does exactly what it says on the tin. Suggestion for improvement: automatic download of the current sunspot number on startup, also save the receiver's location so that the users don't have to retype it.
★★☆☆☆
Advanced Unable to enter xmiter location. Ask me to pick from list unable to drop down list.
★★☆☆☆
Now completely refuses to download any ssn data. Was stuck on 14 for ages, cleared everything out, now it's zero. Just let us put a number in....... It was useful when it worked.
★★☆☆☆
Using a single location option for the whole continental U.S. is just wrong. California and Maine are not going to be the same, but they are to this app.
Technologies used by MUF Predictor
MUF Predictor is requesting 2 permissions and is using 5 libraries.
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