[TenTec] Roofing filters

[w8au at sssnet.com]

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