On 19/09/17 22:05, Udo Langenohl - DK5YA wrote: > I'm looking for specs of the internal sound device which is part of the > KIO3B board but couldn't find any on the Elecraft web site. > Anybody out there who's got detailed information? > > I'm just preparing all the stuff we gonna take with us for our 144/432 > EME DXPedition to DU (DX7EME) in November and I would like to reduce > parts we have to carry as much as I can. We have two K3 with us, usually > connected to very high quality external sound devices (Focusrite > Scarlett, Delta 44). Since we are doing moonbounce (JT65b) and each and > every dB counts we are focussing on lowest noise possible in our sound > devices. If the internal sound card of the KIO3B will meet our needs we > could propably reduce weight and lower all the cable mess a lot.
While EME needs every last fraction of a dB of RF performance, the same is not true of an audio interface used for JT65. In this respect, EME is less demanding than day-to-day HF operation, where the passband may have 20 or more signals of widely varying strengths. As long as you follow the WSJT-X authors' advice about setting levels, a consumer-grade audio interface such as that in the KIO3B is more than adequate. A studio-quality audio interface will add nothing to the performance of your station. WSJT-X requires audio input as 16-bit linear PCM, sampled at 48 kHz. (The next thing it does is to downsample to 12 kHz.) So there's no advantage in greater bit-depths or sampling frequencies. 73, Richard G4DYA ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
