[Elecraft] Filters

[David Gilbert]

Believe it or not, in some SSB contests I've dropped the hicut down to 
as low as 1100/1200 Hz and still been able to copy some voices. It's 
really dependent on the voice characteristics of the operator on the 
other end, but it works often enough to be usable in heavy QRM.

73,
Dave  AB7E


On 6/30/2018 5:36 PM, Don Wilhelm wrote:
> Bill,
> For SSB use LoCut and HiCut, not shift and width.  Shift and Width 
> will drive you crazy because each time you reduce the width, you will 
> have to adjust Shift to maintain a good center frequency. HiCut.LoCut 
> adjusts it automatically.
>
> Set the low end between 300 and 400 Hz initially, then set the high 
> end initially for 2800 to 2900.  If there is QRM on the high frequency 
> side, reduce the HiCut, and if there is QRM on the low frequency side, 
> increase LoCut.
>
> You will find that you cannot cut the low frequency end very far 
> before you lose intelligibility, but you can cut the high end 
> significantly. While you will lose the voice characteristics, it will 
> remain intelligible down to 1600 or 1800 Hz.
>
> 73,
> Don W3FPR