Digital HF
Dave Corio's collection of shortwave utility stations. Varied modes such as RTTY, TDM, FAX, and others.
Digital modes I.D. page
Listen to a sample of digital modes and link to a description of that mode. Submit your unlisted or unidentified mode.
Digital Signals FAQ
Designed to give utility listeners a sampling of the kinds of signals and sounds available on SHORTWAVE Radio today along with information on the available equipment needed to understand, analyze or identify these signals.
DTMF Decoder for DOS
ConCept Technology of Navarre useds the parallel port to bring in the data coming out of a M8870 decoder. The program dates/times it and saves to disk. Even has a very well drawn schematic of the decoder in the GIF format. A Windows version is expected.
DTMF Software Decoder Page
Here resides the DTMF software demos available for an IBM-PC using MS-DOS ver. 3.0 or greater. The demos are free to download and use.
