gareth wrote:
"Scott Dorsey" wrote in message

"Single signal reception" to me would imply a narrow-sloped bandpass
filter but it sounds more like marketing than engineering.

Perhaps you, as indeed do others seem, are trying to interpret a technique
from
the 1930s and 1940s in terms of the multi-pole Xtal filters that are the
norm today?

Well, yes. That is the point of this thread, isn't it?
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."