At 10:11 PM 12/24/2003, RON ZOND wrote:
Please explain the term "roofing filter". What type of filter is it, and how
does it get its name? How does it differ from the standard filters with
which I am familiar?
In the Microwave world, "roofing filters" refer to low pass filters
with a high frequency cutoff. (symbolic of a "roof")
I have noticed all the talk about roofing filters with respect to
receiver front ends, and have not questioned it as you have, since
I knew what was being spoken of.
But your question is a good one. How did a basic "bandpass"
filter become known as a roofing filter? Ham interpretation?
Perry w8au
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