Digital & Software Defined Radio

PSK31 Digital Radio

PSK31-Wikipedia
https://en.wikipedia.org/wiki/PSK31

ARRL Introduction to PSK31 Digital Communications
http://www.arrl.org/psk31-spec

The official PSK31 Website is operated by Eduardo Jacob, EA2BAJ. The PSK31 software program may be downloaded from this site.
http://aintel.bi.ehu.es/psk31.html

VK6YSE Overview of PSK31 & Operating Techniques
http://www.vk6ysf.com/psk31_overview.htm

RIGblaster Sound Card Interface
http://www.westmountainradio.com/rigblaster.php

DX Zone-PSK31 Software
https://www.dxzone.com/catalog/Software/PSK31/