Re: [Elecraft] Re： Re： K3 DIY DSP Rev D - please elaborate
Honestly I didn't think I was hearing all that much in the way of artifacts and I even recorded audio from the K3 and applied filtering to it and didn't really hear a lot of A/B comparison difference. However I noticed that the audio is MUCH less fatiguing when listening to the K3 since I installed the LP daughter board on my DSP board. ~Brett (KC7OTG) On Fri, 2010-01-01 at 05:35 -0800, Bill W4ZV wrote: > > > Johnny Siu wrote: > > > > I know it must be good, otherwise, no modification is required. > > However, Elecraft should tell me how good it will be, BDR, MDS ??? > > > > Johnny I believe I can safely say absolutely ZERO difference in major specs > like BDR, MDS, IMDDR3, etc. These are all determined well ahead of the DSP > audio stage. I believe the main difference is in audio bandwidth > only...extension of the low end response and attenuation of high end DSP > artifacts. If you like ESSB or are bothered by the 12 kHz artifacts, then > you might want the mod. > > Personally I'm waiting for someone with two units (one with the mod and one > without) to post some audio recordings before I go to the bother and expense > of this mod. BTW I have done ALL other mods but I'm not at all convinced > this one will make any difference to me since I don't do ESSB and I don't > hear any artifacts in the headphones I use, even though a hearing test > confirms I still have good hearing at high frequencies. > > 73 & HNY! > > Bill > > -- > View this message in context: > http://n2.nabble.com/K3-DIY-DSP-Rev-D-please-elaborate-tp4238598p4239477.html > Sent from the Elecraft mailing list archive at Nabble.com. > __ > 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 __ 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
Re: [Elecraft] Re? Re? K3 DIY DSP Rev D - please elaborate
On Fri, 1 Jan 2010 20:53:14 +0800 (HKT), Johnny Siu wrote: [snip] >I owned a K3 and still have a K2, [snip] >I still like to know what benefit I shall get from the DSP Rev D modification. [snip] You will not receive any benefit from the revision. You don't have a K3 to install it in. 73 and best regards to you and your family in the new year. Tom, N5GE n...@n5ge.com K3 #806 with SUB RX, K3 #1055, PR6, XV144, XV432, KRC2, W1, 2 W2's and other small kits 1 K144XV on order http://www.n5ge.com http://www.swotrc.net __ 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
Re: [Elecraft] Re： Re： K3 DIY DSP Rev D - please elaborate
Johnny Siu wrote: > > I know it must be good, otherwise, no modification is required. > However, Elecraft should tell me how good it will be, BDR, MDS ??? > Johnny I believe I can safely say absolutely ZERO difference in major specs like BDR, MDS, IMDDR3, etc. These are all determined well ahead of the DSP audio stage. I believe the main difference is in audio bandwidth only...extension of the low end response and attenuation of high end DSP artifacts. If you like ESSB or are bothered by the 12 kHz artifacts, then you might want the mod. Personally I'm waiting for someone with two units (one with the mod and one without) to post some audio recordings before I go to the bother and expense of this mod. BTW I have done ALL other mods but I'm not at all convinced this one will make any difference to me since I don't do ESSB and I don't hear any artifacts in the headphones I use, even though a hearing test confirms I still have good hearing at high frequencies. 73 & HNY! Bill -- View this message in context: http://n2.nabble.com/K3-DIY-DSP-Rev-D-please-elaborate-tp4238598p4239477.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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
