[Elecraft] KFL3C-400 offset?

[Bob McGraw K4TAX]

Grant et al;

I can agree that many hams do not understand the application of 
"filters" in a radio, specially today with the advancements in DSP 
technology.  I find today that many many hams rely on "old school 
methodology" to justify what they do.  They, for the most part, seem to 
shy away from learning and understanding how things work today.   Times 
have changed.   In fact I see more and more the adage of  "what someone 
said" taking precedence.

The roofing filter concept protects the AGC, just as the DSP provides 
the selectivity.    For strong signal operations one should have both.  
But in many cases in our normal QTH environments, little is to be gained 
with added roofing filters.

This is a slide presentation from Sherwood Engineering on FILTERS, why 
and why not. http://www.sherweng.com/documents/Barc2008.pdf
<http://www.sherweng.com/documents/Barc2008.pdf>

I'll take his word for it.   It is well worth the read.

73

Bob, K4TAX


On 2/27/2019 12:22 PM, Grant Youngman wrote:
> Just an opine.  Since these are ROOFING filters, and not the means of determining the radio’s ultimate selectivity, you may not notice a substantial performance improvement of the radio with 8-pole vs 6-pole filters.
>
> I have my flame suit on, just in case — (it can be almost guaranteed to be needed around here).  :-)
>
> Grant NQ5T
> K3 #2091 KX3 #8342
> .qsl.net/donate.html