CCW APRSIR0UGN is present on 10149.7 MHz USB ( 10147.30 +2400Hz ) with the software APRS Messenger (Author: G4HYG ) that permits the APRS over MFSK16.

MFSK-16 mode has been optimised for weak signal use.

You will find the station also on with the call IR0UGN-63. If you want to read more about this way to exchange APRS messages, read the exhaustive page of WA8LMF.