[Elecraft] FILTER SETTINGS - Correction

[Bob Cunnings]

That's where the better shape factor hits home. For the 1 kHz filter,
with -30dB BW of 1400 Hz, we have adequate rejection at 1400/2 = 700
Hz, versus the 5-pole 500 Hz at 1092/2 = 546 Hz, a difference of only
154 from the center frequency. Not a bad single filter choice for for
CW ops like me who aren't serious contesters, and are interested in
using the context filter.

Bob NW8L

On Dec 11, 2007 9:44 AM, Bill Tippett <btippett at alum.mit.edu> wrote:
>
> the 500 Hz will adequately reject a
> signal at 1092/2 = 546 Hz versus the 400 at 647/2 = 323 Hz
> or a difference of ~220 Hz from the center frequency,
> which might NOT be handled by using SHIFT.  Of course
> most strong signals at 323 Hz spacing will have clicks
> and phase noise swamping out any advantage...unless
> it's another K3 or Orion!  :-)
>
>                                          73,  Bill  W4ZV