Much of the DG’s activity is the use of Amateur Radio data modes such the fldigi suite of digital modes, especially the “Fast Simple QSO (fsq)” mode for text chatting with other Amateur Radio operators over the air. fldigi and fsq were designed for use on HF, but experimentation within the DG has found that fldigi and fsq works well on VHF and UHF FM.

fldigi (and fsq) work on Windows, Mac, and Linux computers in conjunction with nearly any “audio interface” such as the SignaLink USB and ordinary Amateur Radio VHF and UHF radios.