Re: [Yaesu] FW: roofing filters

[Adam Farson <farson@shaw.ca>]

Hi Jerry,

Yes. In fact, a roofing filter is required by definition in any superhet,
for image suppression and to reduce the statistical likelihood that strong
out-of-band signals will ride down the IF chain and overload downstream
stages. In an up-converting design, the roofing filter is placed at the IF
output of the first mixer (up-converter).

Cheers for now, 73,
Adam VA7OJ/AB4OJ




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