[Yaesu] FW: roofing filters

[Adam Farson]

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




Scanned for viruses by Blue Coat
http://www.WinProxy.com/