--- In digitalradio@yahoogroups.com, "Vojtech" <bubn...@...> wrote: > > Hi Andy. > > I would say the sound card qualities are very similar to receiver. > > Noise floor > Linearity > Birdies and other noise > > I exclude timing issues, because they could most often be corrected for with > software. Also I exclude stuff like bad drivers, that would cause dropouts.
Thanks to all those that have replied so far. With Vojtech's comments in mind. I will post a little information about the soundcards used by Mircoham ⢠Ultra low noise: - The sound circuits are designed with special attention to low noise - Receive noise floor is better than -90 dBm (typical) in 600 Ohms. - 87 dB (typical) dynamic range rivals that of professional products. - Special circuit design maintains full dynamic range and low noise floor with all radios - both high level and low level outputs. ⢠Independent transmit and receive clock - Transmit clock: 32000, 44100, 48000 Hz - Receive clock: 8000, 11025, 16000, 22050, 32000, 44100, 48000 Hz - sampling rates are native: no up/down conversion or "rounding" errors " I don't need another interface for digital operations (I like my Microkeyer) but what commonly available soundcards can match the above Microham specifications? Andy K3UK
