On May 1, 2007, at 10:37 AM, Doug Faunt N6TQS wrote:
Does that mean that if we substitute the 2.8kHz 8 pole filter for the
2.7kHz 5 pole then we'll get a slightly cleaner transmit signal, too?
If the 2.8 kHz filter had any advantage over 2.7 kHz in a given mode,
that advantage would be realized in both transmit and receive mode, if
the filter were installed in the main filter bank (rather than in the
subreceiver).
The 2.8 kHz filter will have sharper skirts, which may be an advantage.
Ultimate attenuation will be the same with either 5- or 8-pole filters
because of the I.F. DSP.
73,
Wayne
N6KR
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