On 2/9/2011 8:28 AM, Wayne Burdick wrote: > Ralph, > > You're right: even if the filters don't have matched offsets, you can use > diversity mode. > > But the main and sub synthesizer frequencies will usually be separated by a > fraction of a Hz if the offsets are different, leading to a rolling sound in > the receivers (phase precessing, a type of beat note). It can be distracting. > > This is why most users prefer to use matched filters. > > 73, > Wayne > N6KR > > ---- > http://www.elecraft.com > > On Feb 8, 2011, at 10:14 PM, Ralph Parker<[email protected]> wrote: > >>> If you plan to use diversity reception, then the matched filters are >> necessary... >> >> C'mon, guys, this is not true! >> I use diversity reception with one .400 8 pole and one .500 5 pole, >> sometimes with one .250 8 pole and one .500 5 pole. >> Better performance with matched filters = quite likely. >> Necessary = not. >> >> Ralph, VE7XF >> >> ______________________________________________________________ >> 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 The effect can be heard on youtube, there is a diversity reception comparison of K3 and FTDX5000 from YO5... http://www.youtube.com/watch?v=iBGy5HNZxEc K3 is an evident winner in diversity reception.
73, István ______________________________________________________________ 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
