After the first IF. The job of the roofing filter is to narrow the
bandwidth entering into the rest of the radio. You can put in the rf stage
or before the mixer because it would have to be so wide!
David Assaf, III
W5XU
From: [email protected] [mailto:[email protected]]
On Behalf Of Neil M Califano
Sent: Sunday, February 20, 2011 2:48 AM
To: [email protected]
Subject: [Drakelist] Roofing filter in R-4A
Where in the schematic would you find a roofing filter? After the first
mixer, for example?
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