I figured cost was likely the main reason but then when I bought the KX3. I do have another question on the KX3 but I need to study the technical aspects of the question first and maybe I can answer it myself (it has to do with the mixer).
phil On Apr 10, 2014, at 8:02 AM, Wayne Burdick <[email protected]> wrote: > Hi Phil, > > The roofing filter module (KXFL3) is expensive for us to manufacture because > of the extremely tight tolerances on the capacitors (0.1% in some cases). > They have to be matched by hand. > > We didn't want to pass this cost on to all KX3 users, since many of them > don't require the roofing filters. Even without them, the KX3's receiver > performance would fall into the top 6 or so radios as measured by Sherwood > Engineering (http://www.sherweng.com/table.html). > > 73, > Wayne > N6KR > > > On Apr 10, 2014, at 7:56 AM, Phil Hystad <[email protected]> wrote: > >> I have a curiosity question. Why is the KXFL3 roofing filter an option on >> the KX3? I mean, why is it not a built-in feature of the KX3? First, I >> already own a KX3 with the KXFL3 filter so I am not asking this in order to >> choose to buy or not. Caveat: I am also a neophyte (philistine, ignorant, >> or troglodyte) in this sort of radio technology and still in learner mode. >> >> But, it seems to me that the KXFL3 roofing filter is almost required with a >> radio as nice as the KX3. Without it, as I understand the function, any >> crowded band interval like a pileup or close-in CW signals and such would >> render a KX3 (without the roofing filter) with less than the usual Elecraft >> stellar RX performance. >> >> My guess, and this is only a wild guess, is that maybe the option leads this >> space open to future improved roofing filters? Or, maybe even leave it open >> to a 3rd party market supplied filter (although, I think this filter is >> particularly different from other typical 3rd party filters). >> >> 73, phil, K7PEH > > > ______________________________________________________________ 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 Message delivered to [email protected]
