Good review of the flexibility of the K3, Don! My K3 filter slots are all filled: 2.7, 2.1, 400, 250, and 200. Using the K3 Utility, I can set the 250 Hz filter to kick in at a DSP bandwidth of 300 Hz, 250 Hz, or 200 Hz. But with the upcoming firmware upgrades, the flexibility will be enhanced, so I can make the 250 Hz filter kick in at, say 240 Hz, if I want to. At least, that's my understanding of what's coming up. This is a significant enhancement, especially at narrow CW bandwidths-- and in my opinion-- much more desirable than a new variable bandwidth roofing filter. 73, Chuck NI0C K2-10 s/n 5853 K3-100 s/n 1061
Don Wilhelm wrote: > Chuck, > > True, true *BUT* the roofing filter can suppress signals before they > get to the hardware AGC. If one is happy with only the DSP filtering > alone, then do not purchase any roofing filters at all, just go with > the stock 2.7 kHz roofing filter. Different strokes for different > folks, some need the additional filtering, others do not - and others > will purchase a full set of filters just to have them available - the > choice depends on your operating habits and expectations as well as > your ham radio budget. The casual operators will have great success > with only the 2.7 kHz filter, but a contester will want a full > complement of roofing filters to fight those 'tough times'. > > 73, > Don W3FPR > > Chuck Guenther wrote: >> I simply meant that if folks were looking for a more or less >> continuously variable selectivity in the K3, then the 10 Hz increment >> DSP filters would provide that, for all practical purposes. >> 73, >> Chuck NI0C >> >> >> Ed K1EP wrote: >> >>> At 8/5/2009 07:51 PM, Chuck Guenther wrote: >>> >>> >>>> With the upoming 10 Hz resolution DSP upgrade (Firmware 3.23 being >>>> talked about), I certainly wouldn't see much need for a variable BW >>>> roofing filter. >>>> >>> Can you explain that relationship? >>> >>> >>> >>>> 73, >>>> Chuck NI0C >>>> K2, K3 >>>> >>> >> >> ______________________________________________________________ >> 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 >> ------------------------------------------------------------------------ >> >> >> No virus found in this incoming message. >> Checked by AVG - www.avg.com Version: 8.5.392 / Virus Database: >> 270.13.45/2285 - Release Date: 08/06/09 05:57:00 >> >> > ______________________________________________________________ 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
