I'm not sure about the db difference Guy. It would take me a while to get set up to measure that. 73 Steve N4LQ n...@carolina.rr.com ----- Original Message ----- From: "Guy Olinger K2AV" <olin...@bellsouth.net> To: "Steve Ellington" <n...@carolina.rr.com> Cc: <Elecraft@mailman.qth.net> Sent: Saturday, January 09, 2010 11:50 AM Subject: Re: [Elecraft] K3 New DSP board installed
How far down dB-wise is the 3rd harmonic? On Sat, Jan 9, 2010 at 11:41 AM, Steve Ellington <n...@carolina.rr.com> wrote: > The installation of the Rev D DSP board went smoothly. I updated the > firmware and all is well. > > The first thing I noticed was how much louder the headphones (Bose 32 ohm) > are. I use the FP jack. The difference is huge. Before the upgrade, I ran > the CW sidetone at 38. Now it's at 14! I'm not sure about the speaker > volume > but I don't believe there was much if any change. > > I don't hear any change in the low frequency audio. It had already been > improved earlier with one of the FW updates. Headphone impedance can > affect > this too. Using MixW, I can see a well defined null in audio level below > 50 > Hz. > > The 3rd harmonic is still present in the low level audio output. This has > bugged me from day one on the K3. It's weak but visible on the waterfall. > See the photo at > http://n4lq.webs.com/apps/photos/photo?photoid=65288758 Don't bother > telling > me it's my sound card or my level is too high. I've already been trough > that > routine. > > As for audio quality and listener fatigue, time will tell. This radio is > such an improvement over my IC-7800 that anything I say is just nit > picking. > > Was the upgrade worth the money? I guess it depends on how you feel about > money and your K3. > > > 73 Steve > N4LQ > n...@carolina.rr.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 > -------------------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.725 / Virus Database: 270.14.131/2609 - Release Date: 01/09/10 02:35:00 ______________________________________________________________ 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
