>From D9 Owner's Manual (may be downrev at this point), p49: Use VFO A to set the gain in dB. In general, youll want to add 1-2 dB for 400-500 Hz filters, and 3-4 dB for 200-250 Hz filters.
I left the 1.8, 2.8, 6 and 13K filters alone. The 250 Hz I have set for 3 dB gain. matt W6NIA -- On Sat, 28 May 2011 15:17:23 -0400 (EDT), you wrote: >Gents, > >I am searching without much luck for recommendations for the gain >setting recommendations for roofing filters. > >Specfically I have a 700 hz 8 pole and a 200 hz filter 5 pole. There >is a gain setting in the k3 setup menue and I remember there were >recomendations on how to choose this setting. However, I have not been >able to find reference on the net. > >Please can anyone provide some guidance as the performance when these >filters are engaged with digital modes is rather disapointing. What I >mean by this is that a signal can be very clean with the 2.7 or 2.1 >filter engaged but if I use on of these filters the signal becomes very >poor. I want to use these to isolate close in signals but there appears >to be a lot of distortation so they are basically of little use. > >I am betting that there is more to this gain setting than meets the eye >and that is where my problem is. I have put the gain for these two >filters at 1 and the 2.1 & 2.7 at zero. > >I will be playing around with the settings, but there is a method to set >this parameter so I need to learn what and why so I can make them work >the way they are supposed to work. > >Thanks and have a great holiday. > >Don >KD8NNU >______________________________________________________________ >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
