http://soundbytes.asia/proppy/
The tools provided by this web application enable users to predict available frequencies, signal levels and corresponding reliabilities for High Frequency (HF) circuits for user defined paths and times.
Predictions are performed using the ITURHFProp application (A software method for the prediction of the performance of HF circuits in accordance with Recommendation ITU-R P.533-13) provided by the ITU.
The ITURHFProp application is available from the ITU’s website at the following location; http://www.itu.int/en/ITU-R/study-groups/rsg3/Pages/iono-tropo-spheric.aspx.
Full details of Proppy’s features may be found in the Manual, available on-line or as a .pdf download.
