[Elecraft] K3 Roofing filters

[Blair Bates]

Ivan, you wrote:

I am about to purchase a K3 (k). My main interest is certainly CW with
occasional
forays into SSB and even data, and I note the selection of roofing
filters available,
no doubt the 8-pole are somewhat better but what is the general
feeling regarding the
bandwidth(s)  to be included.

>From the operating you plan, and having operated many different K-3s,
for SSB & CW I would suggest:

1.  The standard 2.7 KHz filter for occasional SSB.  As others have
mentioned, the roofing filter is to protect the DSP.
2.  A 400 Hz, 8-pole (or 500 Hz-8 pole) filter for general CW
operation (I find anything narrower too restricting for general
operating "band awareness")
3.  If you are inclined to contest or dig really deep for rare DX, add
a 200 Hz or 250 Hz filter, also.  (Crank it in--only when needed.)

I'll defer to others about the better bandwidths for data modes.

73 de K3YD