Digital Broadcasts on HF
Besides the well known AM broadcasts transmitted by local and international Broadcasting Companies, there are also transmissions in digital modes on MW and HF.
Many Short Wave Listeners are familiar with DRM, Digital Radio Mondiale, which never was very successfull. Only a handful of stations still transmit in DRM. Schedules can be found on the following websites HFCC, DRM Project, DRM.org
The former VoA Radiogram is now transmitted under the name Shortwave Radiogram in various digital modes like MFSK, PSK, Olivia, etc. More info and schedules can be found on their
website: Shortwave Radiogram
Decoders
Software to decode DRM transmissions: Dream. Many Kiwi web sdrs and some sdr interfaces can also decode the signal.
Software to decode the above mentioned HAM modes:
Fldigi , Multipsk, HAM radio deluxe
Fldigi for Android: TIVAR
Further info
How to copy the Shortwave Radiogram digital broadcasts using a PC or laptop
https://wiki.radioreference.com/index.php/Decoding_the_SW_Radiogram_Broadcasts
How to copy the Shortwave Radiogram tests using an Android device (tablet, smartphone)
https://wiki.radioreference.com/index.php/Decoding_the_SW_Radiogram_Broadcasts_with_TIVAR
