I'm using Tom Hammond's latest Spectrogram document for aligning the CW filters for SSB reception (I have the SSB module, but I've got a few things to build before I get around to it). I've selected the Elecraft recommended bandwidths (2.2, 2.0, 1.8, and 1.6 kHz) for SSB reception. I find that at 2.2 and 2.0 kHz (LSB for example), the right (high frequency) side of the trace kind of continues (does not come back down to the base line) even when the left (low frequency) side of the trace is brought down around 300 Hz. At 1.8 and 1.6 kHz, the right (high frequency) side of the trace comes down to the base line as I would expect. As Tom Hammond's 2.4 kHz and 2.1 kHz traces also seem to show this phenomenon to a degree, I assume it is normal (it is just a bit more pronounced in my traces). It appears that, at least on LSB, the CW filter's upper skirt becomes somewhat less well defined at wider bandwidths. Is this the case? Just curious, Michael N9BDF, K2 #4137 _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com