Curt, I suspect that your filter center frequencies are off.
Try using Spectrogram. That will display not only the filter center frequencies, but also the amplitude. If your K2 is typical, change the 0.10 filter to 0.20. The filter width does not chance appreciably at widths less than 0.20, but the attenuation does increase. If you do not have Spectrogram, it can be downloaded from www.n0ss.net, and Tom has several documents dealing with how to set up Spectrogram on your computer. Also take a look at my website www.w3fpr.com article dealing with K2 Dial Calibration. Part 3 of that article deals with filter setup. 73, Don W3FPR On 10/13/2010 9:06 PM, Curt wrote: > I completed K2 s/n06424 about two years ago, the only option is the KSB2, > rarely used. The filters are OP1, 0.7, 0.4, and 0.1 The 0.7 and 0.4 > filters seem to exhibit what seems to me to be excessive signal attenuation. > Strangely, this doesn't seem to be the case for the 0.1 filter. This has > always been true since the unit was completed. Am wondering if somehow the > passband is off. > > Any advice would be appreciated. > > 73, Curt KB5JO > > > ______________________________________________________________ > 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 > ______________________________________________________________ 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
