8 pole vs 5 pole..I knew this would happen
Posted by
Fred (FL) on
May 03, 2007; 5:55pm
URL: http://elecraft.85.s1.nabble.com/8-pole-vs-5-pole-I-knew-this-would-happen-tp446796.html
I think, still, someone needs to define what a ROOFING
FILTER is. Say for sake of argument - I have a
passive or active or crystal filter - and it is to
be used as a ROOFING FILTER. Why is it called this?
Why is the filter itself, called a ROOFING FILTER?
And where does the adjective, ROOFING, come into
play?
...... I'm sure I'm dumb on this one - but would
like to learn. Not until the K3 came on the
Elecraft scene - did anyone mention or get
concerned about the need for ROOFING FILTERS.
Now they're all the rage?
Fred, N3CSY
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