Don Wilhelm wrote > All, > > While Bill's comments are useful, I can say that the TF3MA sidetone mod > is designed for the Rev A K2s (below SN 3000). Those K2s SN 3000 and > above have improvements in the sidetone waveform shaping. If you have > upgraded your K2 below SN 3000 with the A to B kit, then you have the > same sidetone wave shaping as the newer K2s. > > I am not familiar with the TF3MA LP audio cutoff nor the JG1XLZ KSB2 > audio quality mod, and cannot comment. > > 73, > Don W3FPR > > On 1/6/2019 8:20 AM, Bill W4ZV wrote: >> >> Here are a few audio mods that I've made to my K2: >> >> 1. TF3MA's sidetone mod. This cleans up the sidetone to a more pure >> sinusoid, allowing better zero-beating by ear. Without it, I found it >> easy >> to zero beat on a spurious product. The improvement also does not >> fatigue >> my ears as much as before during extended operating. This one is >> definitely >> worth doing in my opinion. >> >> 2. TF3MA's LF audio cutoff mod. >> >> 3. JG1XLZ's KSB2 audio quality mod. (not needed for CW). >> >> I don't have time to find links for these but you should be able to find >> them in a keyword search. They are all free and simple to install once >> you >> have the parts. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:
> Elecraft@.qth > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to > lists+1215531472858-365791@.nabble Are you sure about that Don? Others with S/N above 3000 have noted the difference I did in #4119. Here's a thread from 2008, well past my 2004 vintage unit. http://elecraft.365791.n2.nabble.com/sidetone-mod-now-works-td395423.html 73, Bill W4ZV -- Sent from: http://elecraft.365791.n2.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 Message delivered to arch...@mail-archive.com
