It is quite normal for there to be offset in the 8-pole filters. I have three, and they all do. Enter the offsets and be happy.
73, Jim K9YC On 9/25/2010 9:17 AM, SCOTT D ELLINGTON wrote: > I'm just setting up a new K3 (4657), and the 400 Hz 8-pole CW filter > (KFL3A-400) seems to have a significant offset. The 6 dB audio bandwidth > (AGC off, internal dBV meter) was 236 Hz, and the center about 100 Hz below > the sidetone/CWT. Setting the offset for that filter to -0.13 put the center > frequency within 2 Hz of the sidetone, but only increased the audio bandwidth > to 316 Hz. (ARRL measured 341 for that filter.) Since the audio bandwidth > is still low, I'm guessing the filter bandwidth is less than 400 Hz, in > addition to having an offset. > > Any comments or suggestions before I bother Elecraft support? > ______________________________________________________________ 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
