On 08/10/2012 08:09 PM, Eric Swartz - WA6HHQ, Elecraft wrote: > See: > http://www.sherweng.com/table.html > > :-) > > 73, > Footnote v: "At 1 kHz performance is opposite sideband rejection limited. On CW consider switching to 8-kHz IF. Note: Roofing filter disabled in this mode." What does that mean? 73 Jon LA4RT