hi... i'm one of the folks who is less happy with the 3.27 implementation of NR than the 3.25. i've been trying to do a 'scientific' comparison of the two, so i can record the audio and upload for others to hear/analyze (non trivial since band conditions and QSO's don't seem to last between loading of the FW)
in any event, i'm listening right now to an LSB QSO on 7.182.50. receive EQ is totally flat, noise level here is about an S5. using 3.25, if i set the NR to F3-1, the noise drops down by about 50-75% and the audio peaks up (sharper/more intelligable) about 25% i then load 3.27 but can't find any settings that are similar... even F1-1 gives me a distinct ringing/echo (echo is not quite right... its more like the old spring reverb's of my youth!)... i think that F1-3 should at least match the taps of 3.25, but can i completely replicate the filter response of 3.25's F3-1? btw, i know there's a fair bit of multi-variable confusion and "well, it works fine here", which is to be expected in beta testing... but given that (even with the small sample of this thread) folks seem to 'clump' into the two camps of "works great" and "say what?" i'm wondering if there's something else at play here? another bit of code that's specific to production run variation, or a change in the underlying DSP circuitry/programming during the life of the K3? lyle, is there, perhaps, a chart/form you could suggest for testing with some instructions (ie, make receive bandwidth flat, for SSB 40m, adjust bw/passband/etc., serial no of K3, etc?)... then those of us interested in more rigorous testing can provide some kind of unified feedback? i'm a beta tester for some other hw/sw consumer products and the reporting requirements usually establish a baseline so the engineers can look for patterns. (oh, and THANKS for all the hard work... if this were easy it wouldn't be half as much fun!) 73 robin (K9RDG) ______________________________________________________________ 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
