Not really. Remember that these are roofing filters and their job is to reduce the amount of signal that the DSP has to deal with. The ultimate selectivity is based on the IF/AF DSP.
Also review the manual about the dual context feature. This gives you a center narrow filter and a wider one with reduced sensativity to alloy you to hear those who are calling a bit off freq but not so much as to hinder someone you are working on frequency. ------------------------- 73, Greg - AB7R Whidbey Island WA NA-065 On Wed Jul 14 8:30 , "John King" sent: >As another data point in this discussion... > >I operate 100% CW with my K3, which is equipped with 200, 500, 1000, and >2.7KHz filters. > >During FD 2010 I made 400+ CW QSO's during my two 4 hour operating shifts. >The great majority of that operating time was spent with the DSP bandwidth >at 600-700 Hz (and the 1KHz crystal filter.) Only once, when digging out a >weak one, did I narrow the bandwidth tight enough to engage the 200Hz >crystal filter. FD may not be the ultimate contest environment test, but >it's busy. Calling stations are often pretty far off zero beat in FD, so one >needs a fairly wide bandwidth to hear many of them. The 1KHz crystal filter >combined with the K3 DSP did a swimmingly good job this year and in FD's 09 >and 08. Would a 750 Hz crystal filter be better? Perhaps, but I'm quite >happy with what I have now. > >73, > john WA1ABI > > >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: Elecraft@mailman.qth.net','','','')">Elecraft@mailman.qth.net > >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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
