[Elecraft] Roofing Filters - An Empirical Test

[Scott Manthe]

The January 2009 QST has a table list the IMD numbers with various 
filters. Quite informative. There's is no easy way to cut/paste the data 
into an email, unfortunately.

73,
Scott, N9AA


On 5/12/14 3:54 PM, Dauer, Edward wrote:
> I would be interested in knowing if anyone has done an empirical test and
> observed the difference directly.  Specifically, since the sub receiver is
> identical to the main receiver in every way, if someone has a K3 with, for
> example, a 400 Hz filter in the main but only a wider set in the sub, and
> then set the DSP bandwidth on both receivers to 200 Hz or so, what
> differences they actually noticed.  I have no doubt the theory and the
> engineering are sound - just curious what the difference sounds like in
> the field . . .
>
> Ted, KN1CBR
>
>
>