[Elecraft] K3: roofing filter configuration settings

[Arie Kleingeld PA3A]

Hi Dick,

Just do it. If you need a certain bandwidth for a certain mode, use the 
narrowest roofer you have in there; just like in any other conventional 
transceiver.
So if you want 350Hz as bandwidth, use that 250 filter (which is 
actually 370). That's common sense.
Don't let the 250Hz tag on the filter fool you. They say they sell you 
250Hz, that's just not true. It should have stated 350Hz or so.

And in ham spirit: just try out different settings and decide what works 
best.

73
Arie PA3A

Op 10-2-2016 om 6:05 schreef Dick via Elecraft:
> snip>
>   
> The factory default roofing filter "configuration bandwidth" setting  is to
> set the 250hz filter at a setting of "250".  Therefore, the  250hz roofing
> filter will engage at the same time as the 250hz DSP filter.
> However, since the 250hz roofing filter has an actual BW6 of 370hz,  aren't
> there times when it would be more beneficial to have  the "configuration
> bandwidth" of the 250hz roofing filter set to 350 or  400?
> I'm thinking this may be especially true when operating RTTY since the
> average RTTY bandwidth is aprx. 370hz.  Perhaps there are times when  this
> would be beneficial when operating other modes as well?
>   
> <snip
>   
> Dick- K9OM
>