Re: [TenTec] Orion Roofing Filter Cut In

[Sinisa Hristov <shristov@ptt.yu>]

Bob Henderson wrote:

> Which, I guess, brings us back to the
> original question about whether switching roofing filters at DSP b/w = 75%
> roofing b/w is optimum or unecessarily conservative?


I'd say it is quite good. Only the flat [central] part
of roofing filter's passband passes through the DSP filter
and DSP filter's passband flatness is mostly preserved.

Also, group delay variation occures mostly at band edges,
and is avoided this way.


73,

Sinisa  YT1NT, VA3TTN