> I think narrow digitals like PSK 31 work well with cw
> filters like 400 or 200 Hz. Anyone have a preference?
> For Rtty, are the cw filters too narrow?
The "200 Hz" filter is definitely too narrow for RTTY
which really needs about 270 Hz to properly pass both
tones. The 250 Hz (really about 370 Hz), 400 Hz (about
430 Hz) and 500 Hz (about 480 Hz in my radios) are all
good for RTTY.
Given the relatively small difference among the 500,
400, and 250 Hz filters there is no reason to have
more than one of them. My choice was the 500 Hz plus
the 200 Hz for very crowded conditions on CW.
73,
... Joe, W4TV
> -----Original Message-----
> From:
[hidden email]
> [mailto:
[hidden email]] On Behalf Of Fred Wolf
> Sent: Tuesday, October 28, 2008 11:26 AM
> To:
[hidden email]
> Subject: [Elecraft] K3 Filter Advice
>
>
> I have just completed my K3 Kit, S/N 01817, and installed the
> stock 2.8 kHz filter and the 8-pole 2.1 kHz filter. Thinking
> these would handle my SSB needs for the beginning. I plan to
> also operate Rtty and digital modes, and I wonder if there
> are suggestions for the best filters. I think narrow
> digitals like PSK 31 work well with cw filters like 400 or
> 200 Hz. Anyone have a preference? For Rtty, are the cw
> filters too narrow? Any advise is welcomed.
>
> Fred Wolf
>
[hidden email]
>
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