[Elecraft] K2 Filter Shape Factors

[Darrell Bellerive]

As Eric points out below, the CW filter is optimized for 400 Hz
bandwidth. Is there a similar optimization for offset/sidetone
frequency? Other than personal tonal preferences, what are the
advantages and disadvantages of the offset/sidetone set to 400 Hz vs.
600 Hz vs. 800 Hz etc?

Darrell   VE7CLA   K2 #1973

On Sat, 2004-04-10 at 16:41, Eric Swartz WA6HHQ - Elecraft wrote:
> Above 1000 Hz you will see increasing ripple in the variable CW filter. At 1.2 
> kHz and above it has significant ripple and a wider shape factor and is really 
> only intended for tuning the band and casual SSB reception.
> 
> It is optimized for impedance match at around 400 Hz or so. It can be set 
> wider for SSB receive, but is not optimal. For best SSB reception the fixed 
> filter on the SSB board has a much better, flatter response :-)
> 
> 73, Eric   WA6HHQ
> ------
>