> ??? Are you saying that Elecraft makes additional changes on > the "C" board that are not part of the LPF addition?
Yes, you can find them by comparing the January 2010 schematics to previous schematics. The changes are similar to the W9AC mods but they involve scaling resistors instead of capacitors. The changes are not necessary if: 1) you use high impedance headpones and 2) you don't care to create multiple "false carriers" in ESSB operation (extended low frequency transmit). The "low frequency response" modifications are strictly for extended response below 100 Hz. 73, ... Joe, W4TV > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Grant Youngman > Sent: Monday, March 08, 2010 12:05 PM > To: Elecraft Reflector > Subject: Re: [Elecraft] [K3] LPF DSP modification > > > > On Mar 8, 2010, at 10:05 AM, Joe Planisky wrote: > > > > > Do note that the LPF mod does NOT give you the extended low > frequency > > response on TX and RX that you would get with the board > exchange. If > > that's not important to you, then the DIY option is a good > way to go. > > > > ??? Are you saying that Elecraft makes additional changes on > the "C" board that are not part of the LPF addition? > > Grant/NQ5T > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > 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:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
