Sorry, I saw C228 through my morning eyes and answered about the LPF, but the question was about the BPF - it has been answered by Sverre.
73, Don W3FPR On 1/15/2011 8:56 AM, Don Wilhelm wrote: > David, > > The 40 meter LPF was changed to an elliptical filter - you can see by > comparing the old and new circuits. > I am not certain of the reason, but I have assumed that it provides > better performance for both 50 and 40 meters (better harmonic rejection > for 60 meters). > > 73, > Don W3FPR > > On 1/15/2011 3:21 AM, David Pratt wrote: >> Don W3FPR: >> A query about C228 a few days ago prompted me to look at my own K2 >> manual which does not show C228. Unless my old grey cells deceive me, I >> recall the 40m bandpass filter being changed several years ago. In fact, >> I have found an old envelope in which I have gathered together the >> necessary five capacitors to make the change. >> >> My question is: What was the reason for the change of the 40m bandpass >> filter and is it worth doing? BTW, I do use my K2 on 60m. >> >> 73 de David G4DMP > ______________________________________________________________ > 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
