I'm not sure the flat passband is the better pick if you have to pick one. One narrows the passband to NOT hear things, or no one would ever buy anything but the wide body roofer. The FT1000MP would do.
The rejection of signals before the analog to digital converter, the vertical range of the converter, and defensive hardware AGC in front of the converter are central concepts of the radio. Might as well take them head on. 73, Guy. On Sun, Mar 14, 2010 at 12:34 AM, Ed Muns <[email protected]> wrote: > K2AV noted: >> "The crystal filter is always wider than the DSP bandwidth >> and therefore does not cause the IF bandwidth to be narrower >> due to cascading." >> >> To construe the sentence correctly requires the assumption >> that ONLY the shape INSIDE the rated 3 dB or 6 dB passband >> matters. It is true that this "flat" part of the curve is >> governed most by the characteristics of the narrower curve. >> HOWEVER, everything cascades. >> PARTICULARLY so on the skirts. > > That's right. I chose to simplify the point by not getting into the skirt > issues. It's clear from the posts on this reflector that the basics of this > topic are not well understood, let alone the subtleties of the cascaded > skirts. > > Ed - W0YK > ----------------------------------------------- > Ed Muns > Muns Vineyard - www.munsvineyard.com > FaceBook - www.facebook.com/munsvineyard > > ______________________________________________________________ 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
