PSK31 Digital Mode
- PSK31-Wikipedia
- ARRL Introduction to PSK31 Digital Communications
- The official PSK31 Website is operated by Eduardo Jacob, EA2BAJ. The PSK31 software program may be downloaded from this site.
- VK6YSE Overview of PSK31 & Operating Techniques
- RIGblaster Sound Card Interface
- DX Zone-PSK31 Software
D-STAR Digital Radio
Software Defined
Radio
Radio