To be strict about the data format, it is encoded, not encrypted as it is transmitted using Amateur Radio frequencies and has to be open for decoding.
The document which describes the format is given here:http://funcubetest2.files.wordpress.com ... aft_13.doc
and the formulae for translation here:http://funcubetest2.files.wordpress.com ... ons_b1.xls
The source code for decoding the data in Java is here:https://github.com/FUNcube/fcdw_data
The main starting point for decoding the hex frames is here:https://github.com/FUNcube/fcdw_data/bl ... essor.java
Look for the processHexFrame() method.
Quite happy to continue the conversation here or take it offline: dave at g4dpz dot me dot uk
Dave Johnson, G4DPZ
FUNcube Data Warehouse Developer