We use icons shown below to guide you to the best choice for your equipment setup. You can also choose to use your PCs internal sound card to generate/decode your Digimode signals or to use an external sound card interface to free up your PCs sound card for normal use. We offer a large range of interfaces to ensure maximum compatibility with modern and older PCs and digimode software. Icom CAT control and Digital mode interfaces to use software such as Ham Radio Deluxe, FLDigi, WSJT-X to operate PSK31, FT-8, JT9, JT-65, Echolink and many other AFSK modes.